Horizontally displaceable foam breast compression paddles

Abstract

The breast compression paddle includes a bracket, a rigid base, and a foam compression element. The bracket removably secures the breast compression paddle to the imaging system. The rigid base is secured to the bracket and includes a first edge and a second edge opposite the first edge. The foam compression element is slidably secured to the rigid base. In one embodiment, the breast compression paddle further includes a rail system for slidably securing the foam compression element to the rigid base.

Description

[Technical Field]

[0001] (CROSS-REFERENCE TO RELATED APPLICATIONS) This application claims the benefit of priority to U.S. Provisional Application No. 63 / 082,257, filed September 23, 2020, and U.S. Provisional Application No. 62 / 965,511, filed January 24, 2020, which were filed as PCT International Patent Applications on January 15, 2021, the disclosures of which are incorporated herein by reference in their entireties. [Background technology]

[0002] Compression during mammography and tomosynthesis imaging serves several purposes. For example, (1) it makes the breast thinner in the direction of the x-ray beam, thereby reducing patient radiation exposure from the level required to image thicker portions of the uncompressed breast; (2) it makes the breast more uniform in thickness in the direction of the x-ray beam, thereby promoting more uniform exposure in the image plane throughout the breast image; (3) it immobilizes the breast during x-ray exposure, thereby reducing image blur; and (4) it brings breast tissue from the chest wall into the imaging exposure field, thus allowing for more tissue imaging. When the breast is compressed, a technician typically manipulates the breast to properly position it and counteract the tendency of compression to push breast tissue toward the chest wall and out of the imaging field.

[0003] The standard compression method for mammography and tomosynthesis uses movable, rigid, radiolucent compression paddles. The breast is placed on a breast support platform, which is typically flat, and the paddles then compress the breast, usually while a technician or other medical professional holds the breast in place. The technician may also manipulate the breast to ensure adequate tissue coverage within the receiver's field of view.

[0004] One known challenge in mammography and breast tomosynthesis is the discomfort that patients can experience when the breast is compressed, which must be done with enough force to immobilize the breast and spread the breast tissue for x-ray imaging. Discomfort can potentially cause the patient to move, which can negatively affect image quality. Discomfort can also potentially deter patients from being screened for breast cancer. Another known challenge is ensuring the imaging field includes the desired amount of breast tissue. Summary of the Invention [Means for solving the problem]

[0005] In one aspect, the technology relates to a breast compression paddle including: a bracket for removably securing the breast compression paddle to an imaging system; a rigid base secured to the bracket, the rigid base including a first edge and a second edge opposite the first edge; and a foam compression element slidably secured to the rigid base. In one example, the paddle includes a rail system for slidably securing the foam compression element to the rigid base. In another example, the rail system includes a first rail secured to the first edge, a second rail secured to the second edge, a first collar slidably secured to the first rail, and a second collar slidably secured to the second rail, the foam compression element being fixed relative to the first collar and the second collar. In yet another example, the paddle includes a bridge connecting the first collar and the second collar, and the foam compression element being secured to the bridge. In yet another example, the paddle includes a bridge substantially parallel to the bottom surface of the rigid substrate. In another example, the foam compression element is positionable between a first position disposed below the rigid substrate and a second position disposed substantially below the bracket.

[0006] In another aspect, the technology relates to a breast imaging system including an x-ray source, a breast support platform, a compression arm movably disposed between the x-ray source and the breast support platform, a rigid base, a rail system removably secured to at least one of the compression arm and the rigid base, and a foam compression element secured to at least one of the rail system and the rigid base. In one example, the rigid base is removably secured to the rail system, and the foam compression element is secured to the rigid base. In another example, the rail system includes a single rail and a carrier slidably engaged with the single rail, the carrier removably secured to a bracket secured to the rigid base. In yet another example, the rigid base is slidably secured to the rail system in a first position and a second position, wherein in the first position the rigid base is substantially centered on the compression arm and in the second position the rigid base is substantially disposed to one side of the compression arm. In yet another example, the rigid substrate is secured to the compression arm at a bracket and removably secured to a rail system, and the foam compression element is secured to the rail system. In one example, the rail system includes a bridge, and the foam compression element is secured to the bridge. In another example, the foam compression element and bridge are positionable at a first position substantially below the bracket and compression arm and at a second position substantially below the rigid substrate.

[0007] In another aspect, the technology relates to a method of positioning a patient's breast for X-ray imaging, the method including: moving a rigid substrate toward the breast in a direction substantially perpendicular to a support platform supporting the breast; moving a foam compression element in a direction substantially parallel to the support platform; and contacting the breast with the foam compression element. In one example, moving the rigid substrate includes moving a first rigid substrate and moving a second rigid substrate, and moving the foam compression element is performed between moving the first rigid substrate and moving the second rigid substrate. In another example, the method includes placing the breast on the support platform. In yet another example, the direction substantially parallel to the support platform is substantially parallel to the chest wall. In yet another example, the direction substantially parallel to the support platform is substantially perpendicular to the chest wall. In one example, each of moving the rigid substrate and moving the foam compression element is performed via at least one motor. In another example, moving the foam compression element in a direction substantially parallel to the support platform includes moving a rigid substrate in a direction substantially parallel to the support platform.

[0008] In another aspect, the technology relates to a breast imaging system including an x-ray source, a breast support platform, a compression arm movably disposed between the x-ray source and the breast support platform, a compression paddle secured to the compression arm, where at least one of the breast support platform and the compression paddle defines a compression surface, and a foam compression element secured to about 30% or less of the compression surface. In another aspect, the technology relates to a breast imaging system including an x-ray source, a breast support platform including a non-compression edge, a compression arm movably disposed between the x-ray source and the breast support platform, a compression paddle secured to the compression arm, and a foam compression element secured to the non-compression edge. In certain examples, the foam compression element includes a coating. In another aspect, the technology relates to a breast compression paddle including: a bracket for removably securing the breast compression paddle to an imaging system; a board receptacle movably secured to the bracket; a rigid board receivably secured to the board receptacle, the rigid board including a first edge and a second edge disposed opposite the first edge; and a foam compression element secured to the rigid board. In one example, the breast compression paddle further includes a drive system disposed within the bracket; and a bearing mount secured to the rigid board and movably secured to the drive system such that actuation of the drive system moves the bearing mount and the rigid board from the first position to the second position. In another example, when in the first position, the rigid board is positioned substantially below a compression region of the bracket, and when in the second position, the rigid board is positioned substantially away from the compression region of the bracket. In yet another example, when in the second position, the first edge of the rigid board is positioned below the compression region, and the second edge is not positioned below the compression region. In yet another example, the rigid substrate includes a third edge and a fourth edge disposed opposite the third edge, the third edge and the fourth edge being receivably secured in the substrate receptacle.

[0009] In another example of the above aspect, the substrate receptacle includes at least one locking pin. In one example, the rigid substrate includes a flange, and the foam compression element is at least partially surrounded by the flange. In another example, the breast compression paddle further includes a cover covering the foam compression element, the cover connected to the flange.

[0010] In another aspect, the technology relates to a compression paddle that includes a rigid substrate, a foam compression element secured to the substrate, and at least one magnet connected to the rigid substrate for magnetically engaging at least a portion of a breast imaging system. The present specification also provides, for example, the following: (Item 1) A breast compression paddle, the breast compression paddle comprising: a bracket for removably securing the breast compression paddle to an imaging system; a rigid substrate secured to the bracket, the rigid substrate having a first edge and a second edge disposed opposite the first edge; a foam compression element slidably secured to the rigid substrate; Breast compression paddles. (Item 2) Item 10. The breast compression paddle of item 1, further comprising a rail system for slidably securing the foam compression element to the rigid base. (Item 3) The rail system comprises: a first rail fixed to the first edge; a second rail secured to the second edge; a first collar slidably secured to the first rail; a second collar slidably secured to the second rail; Equipped with Item 3. The breast compression paddle of item 2, wherein the foam compression element is fixed relative to the first collar and the second collar. (Item 4) Item 4. The breast compression paddle of item 3, further comprising a bridge connecting the first collar and the second collar, the foam compression element being secured to the bridge. (Item 5) Item 5. The breast compression paddle of item 4, wherein the bridge is substantially parallel to a bottom surface of the rigid base. (Item 6) Item 1. The breast compression paddle of item 1, wherein the foam compression element is positionable between a first position disposed below the rigid base and a second position disposed substantially below the bracket. (Item 7) 1. A breast imaging system, comprising: an X-ray source; a breast support platform; a compression arm movably positioned between the x-ray source and the breast support platform; A rigid substrate and a rail system removably secured to at least one of the compression arm and the rigid substrate; a foam compression element secured to at least one of the rail system and the rigid substrate; A breast imaging system comprising: (Item 8) 8. The breast imaging system of claim 7, wherein the rigid base is removably secured to the rail system and the foam compression element is secured to the rigid base. (Item 9) 9. The breast imaging system of claim 8, wherein the rail system comprises a single rail and a carrier slidably engaged with the single rail, the carrier being removably secured to a bracket secured to the rigid base. (Item 10) 10. The breast imaging system of claim 9, wherein the rigid base is slidably secured to the rail system in a first position and a second position, and wherein in the first position the rigid base is substantially centered on the compression arm and in the second position the rigid base is substantially positioned to one side of the compression arm. (Item 11) 8. The breast imaging system of claim 7, wherein the rigid base is secured to the compression arm at a bracket and removably secured to the rail system, and the foam compression element is secured to the rail system. (Item 12) Item 12. The breast imaging system of item 11, wherein the rail system comprises a bridge and the foam compression element is secured to the bridge. (Item 13) Item 13. The breast imaging system of item 12, wherein the foam compression element and bridge are positionable in a first position substantially below the bracket and compression arm and in a second position substantially below the rigid base. (Item 14) 1. A method of positioning a patient's breast for x-ray imaging, the method comprising: moving a rigid substrate toward the breast in a direction substantially perpendicular to a support platform supporting the breast; moving a foam compression element in a direction substantially parallel to the support platform; contacting the breast with the foam compression element; A method comprising: (Item 15) Item 15. The method of item 14, wherein moving the rigid substrate includes a first operation of moving the rigid substrate and a second operation of moving the rigid substrate, and moving the foam compression element is performed between the first operation of moving the rigid substrate and the second operation of moving the rigid substrate. (Item 16) 15. The method of claim 14, further comprising placing the breast on the support platform. (Item 17) Item 15. The method of item 14, wherein the direction substantially parallel to the support platform is substantially parallel to the chest wall. (Item 18) Item 15. The method of item 14, wherein the direction substantially parallel to the support platform is substantially perpendicular to the chest wall. (Item 19) Item 15. The method of item 14, wherein each of moving the rigid substrate and moving the foam compression element is performed via at least one motor. (Item 20) Item 15. The method of item 14, wherein moving the foam compression element in a direction substantially parallel to the support platform comprises moving the rigid substrate in a direction substantially parallel to the support platform. (Item 21) 1. A breast imaging system, comprising: an X-ray source; a breast support platform; a compression arm movably positioned between the x-ray source and the breast support platform; a compression paddle secured to the compression arm, wherein at least one of the breast support platform and the compression paddle defines a compression surface; a foam compression element secured to no more than about 30% of said compression surface; A breast imaging system comprising: (Item 22) 1. A breast imaging system, comprising: an X-ray source; a breast support platform, the breast support platform including a non-compressive edge; a compression arm movably positioned between the x-ray source and the breast support platform; a compression paddle fixed to the compression arm; a foam compression element secured to the non-compression edge; A breast imaging system comprising: (Item 23) Item 23. The breast imaging system of item 22, wherein the foam compression element comprises a coating. (Item 24) A breast compression paddle, the breast compression paddle comprising: a bracket for removably securing the breast compression paddle to an imaging system; a board receptacle movably fixed to the bracket; a rigid substrate receivably secured in the substrate receptacle, the rigid substrate having a first edge and a second edge disposed opposite the first edge; a foam compression element secured to the rigid substrate; Breast compression paddles. (Item 25) a drive system disposed within the bracket; a bearing mount fixed to the rigid substrate; Furthermore, Item 25. The breast compression paddle of item 24, wherein the bearing mount is movably secured to the drive system, whereby actuation of the drive system moves the bearing mount and the rigid base plate from a first position to a second position. (Item 26) Item 26. The breast compression paddle of item 25, wherein when in the first position, the rigid base is positioned substantially below the compression area of ​​the bracket, and when in the second position, the rigid base is positioned substantially away from the compression area of ​​the bracket. (Item 27) Item 26. The breast compression paddle of item 25, wherein when in the second position, a first edge of the rigid substrate is positioned below the compression area and the second edge is not positioned below the compression area. (Item 28) Item 25. The breast compression paddle of item 24, wherein the rigid base comprises a third edge and a fourth edge disposed opposite the third edge, the third edge and the fourth edge being receivably secured to the base receptacle. (Item 29) Item 29. The breast compression paddle of item 28, wherein the base receptacle includes at least one locking pin. (Item 30) Item 25. The breast compression paddle of item 24, wherein the rigid substrate comprises a flange and the foam compression element is at least partially surrounded by the flange. (Item 31) Item 31. The breast compression paddle of item 30, further comprising a cover covering the foam compression element, the cover connected to the flange. (Item 32) A compression paddle, the compression paddle comprising: A rigid substrate and a foam compression element secured to the substrate; at least one magnet connected to the rigid substrate for magnetically engaging at least a portion of a breast imaging system; A compression paddle is provided. [Brief explanation of the drawings]

[0011] [Figure 1A] FIG. 1A is a schematic diagram of an exemplary imaging system.

[0012] [Figure 1B] FIG. 1B is a perspective view of the imaging system of FIG. 1A.

[0013] [Figure 2A] 2A-2C are various views of a breast compression paddle with a foam compression element. [Figure 2B] 2A-2C are various views of a breast compression paddle with a foam compression element. [Figure 2C] 2A-2C are various views of a breast compression paddle with a foam compression element.

[0014] [Figure 3A] 3A and 3B depict a breast compression paddle connected to a rail system in a first position and a second position, respectively. [Figure 3B] 3A and 3B depict a breast compression paddle connected to a rail system in a first position and a second position, respectively.

[0015] [Figure 4] 4A-4C depict various rail systems for use with imaging systems.

[0016] [Figure 5A]5A and 5B depict the rail system and breast compression paddle connected to the foam compression element in a first position and a second position, respectively. [Figure 5B] 5A and 5B depict the rail system and breast compression paddle connected to the foam compression element in a first position and a second position, respectively.

[0017] [Figure 6] FIG. 6 depicts a method for positioning the breast for X-ray imaging.

[0018] [Figure 7] FIG. 7 depicts the x-ray imaging system in breast positioning for left lateral oblique (LMLO) imaging orientation.

[0019] [Figure 7A] FIG. 7A depicts a partial perspective view of another example of an X-ray imaging system.

[0020] [Figure 8A] 8A and 8B depict a perspective view and an exploded perspective view, respectively, of another example of a breast compression paddle having a foam compression element. [Figure 8B] 8A and 8B depict a perspective view and an exploded perspective view, respectively, of another example of a breast compression paddle having a foam compression element.

[0021] [Figure 8C] 8C and 8D are side views of the breast compression paddle of FIGS. 8A and 8B with the foam compression element in a first position and a second position, respectively. [Figure 8D] 8C and 8D are side views of the breast compression paddle of FIGS. 8A and 8B with the foam compression element in a first position and a second position, respectively.

[0022] [Figure 8E] FIG. 8E depicts an exploded perspective view of the bracket of the breast compression paddle of FIGS. 8A-8D.

[0023] [Figure 8F] FIG. 8F depicts an internal view of the chassis of the breast compression paddle.

[0024] [Figure 9A] 9A-9F depict various views of the components of a connection system for connecting a foam compression element to a compression paddle. [Figure 9B] 9A-9F depict various views of the components of a connection system for connecting a foam compression element to a compression paddle. [Figure 9C] 9A-9F depict various views of the components of a connection system for connecting a foam compression element to a compression paddle. [Figure 9D] 9A-9F depict various views of the components of a connection system for connecting a foam compression element to a compression paddle. [Figure 9E] 9A-9F depict various views of the components of a connection system for connecting a foam compression element to a compression paddle. [Figure 9F] 9A-9F depict various views of the components of a connection system for connecting a foam compression element to a compression paddle.

[0025] [Figure 9G] FIG. 9G depicts another example of a connection system for connecting a foam compression element to a compression paddle.

[0026] [Figure 10] 10A and 10B depict examples of interfaces between a mounting portion and a substrate receptacle.

[0027] [Figure 11] 11A-11C depict examples of substrate receptacles.

[0028] [Figure 12] FIG. 12 depicts another example of a breast stabilization element.

[0029] [Figure 13] FIG. 13 depicts another example of a breast stabilization element.

[0030] [Figure 14] FIG. 14 depicts a method of positioning the breast for X-ray imaging. DETAILED DESCRIPTION OF THE INVENTION

[0031] FIG. 1A is a schematic diagram of an exemplary imaging system 100. FIG. 1B is a perspective view of the imaging system 100. Referring to FIGS. 1A and 1B concurrently, not all elements described below are depicted in both figures. The imaging system 100 immobilizes a patient's breast 102 for x-ray imaging (either or both mammography and tomosynthesis) via a breast compression fixture unit 104 including a stationary breast support platform 106 and a movable paddle 108. Different paddles, each with a different purpose, are known in the art. An exemplary paddle is also described herein for context. The breast support platform 106 and the paddle 108 each have compression surfaces 110 and 112, respectively, that move toward each other to compress, immobilize, stabilize, or otherwise hold and immobilize the breast 102 during the imaging procedure. In known systems, compression surfaces 110, 112 are exposed for direct contact with breast 102. One or both of these compression surfaces 110, 112 may be rigid plastic, flexible plastic, resilient foam, mesh, screen, or the like. Platform 106 also houses image receiver 116, optionally a tilt mechanism 118, and optionally an anti-scatter grid (not depicted but positioned above image receiver 116). Fixture unit 104 is in the path of imaging beam 120 emanating from x-ray source 122 such that beam 120 impinges on image receiver 116.

[0032] The fixture unit 104 is supported on a first support arm 124 via a compression arm 134, which is configured to be raised and lowered along the support arm 124. The x-ray source 122 is supported on a second support arm, also referred to as a tube head 126. For mammography, the support arms 124 and 126 can rotate as a unit about an axis 128 between different imaging orientations, such as CC and MLO, so that the system 100 can capture mammogram projection images in each orientation. In operation, the image receptor 116 remains in a fixed position relative to the platform 106 while images are captured. The fixture unit 104 releases the breast 102 for movement of the arms 124, 126 to different imaging orientations. For tomosynthesis, the support arm 124 remains in a fixed position and the breast 102 is immobilized while at least a second support arm 126 rotates the x-ray source 122 about an axis 128 relative to the immobilizer unit 104 and compressed breast 102. The system 100 captures multiple tomosynthesis projection images of the breast 102 at each angle of the beam 120 relative to the breast 102.

[0033] Simultaneously, and optionally, the image receiver 116 can be tilted relative to the breast support platform 106 in synchronization with the rotation of the second support arm 126. The tilting can be through the same angles as the rotation of the X-ray source 122, but can also be through a selected different angle so that the beam 120 remains at substantially the same position on the image receiver 116 for each of the multiple images. The tilting can be about an axis 130, which is, but need not be, in the image plane of the image receiver 116. A tilt mechanism 118 coupled to the image receiver 116 can drive the image receiver 116 in a tilting motion. For tomosynthesis and / or CT imaging, the breast support platform 106 can be horizontal, or the breast support platform 106 can be at an angle to the horizontal (e.g., an orientation similar to that for conventional MLO imaging in mammography). System 100 can be a dedicated mammography system, a dedicated CT system, or a dedicated tomosynthesis system, or a "combo" system capable of performing multiple forms of imaging. An example of such a combo system is promoted by the assignee herein under the trademark "Selenia Dimensions."

[0034] When the system is operated, the image receiver 116 generates imaging information in response to illumination by the imaging beam 120 and provides it to the image processor 132 for processing and generation of mammograms. A system control and workstation unit 138, including software, controls the operation of the system and interacts with the operator, receiving commands and delivering information including processed light images.

[0035] Imaging system 100 includes a floor mount or base 140 for supporting imaging system 100 on a floor. A gantry 142 extends upward from floor mount 140 and rotatably supports both a tube head 208 and a support arm 210. Tube head 126 and support arm 124 are configured to rotate independently of one another so that they can be raised and lowered along a face 144 of gantry 142 to accommodate patients of different heights. X-ray source 122 is disposed within tube head 208. Together, tube head 126 and support arm 124 may be referred to as a C-arm 144.

[0036] Several interfaces and display screens are located on imaging system 100. These include a foot display screen 146, a gantry interface 148, a support arm interface 150, and a compression arm interface 152. Generally, the various interfaces 148, 150, and 152 may include one or more display screens, including one or more tactile buttons, knobs, switches, and capacitive touchscreens with graphic user interfaces (GUIs), to allow a user to interact with and control imaging system 100. Generally, foot display screen 146 is primarily the display screen, although capacitive touchscreens may also be utilized as required or desired.

[0037] One challenge with imaging system 100 is how to immobilize and compress breast 102 for the desired or required imaging. A medical professional, typically an x-ray technician, generally adjusts breast 102 within immobilizer unit 104 while pulling tissue toward the imaging area and moving compression paddles 108 toward breast support platform 106, immobilizing breast 102 and holding it in place, with as much breast tissue as practical between compression surfaces 110, 112.

[0038] During breast imaging, it is often desirable to immobilize the breast throughout compression. For example, by compressing the breast, the breast is made thinner, thus requiring a lower radiation dose. Furthermore, by immobilizing the breast, image blurring from breast movement during imaging is reduced. Other benefits can also be realized by compressing the breast. However, stiff breast compression paddles can cause discomfort to the patient whose breast is being compressed. One reason for the discomfort the patient may feel is that the compression force is unevenly distributed throughout the breast, which is often concentrated in the thickest part of the breast, usually near the chest wall or near the lower front edge of the compression paddle and the upper front corner of the breast platform. The anterior portion of the breast, such as near the nipple, receives less or no compression force. The paddles may not even contact this portion of the breast. (The terms "frontal," "inferior," and "superior" refer to use of a craniocaudal (CC) imaging orientation with the patient facing the front of the imaging system, but it should be understood that other imaging orientations, including medial-external oblique (MLO), are also used with the same equipment.)

[0039] To ameliorate these problems, the compression systems described herein include a foam compression element positioned below the lower surface of a firm compression paddle and contacting the breast during compression. Compression paddles utilizing foam compression elements are generally described in PCT International Patent Applications PCT / US2019 / 033998, PCT / US2019 / 034001, and PCT / US2019 / 034010, all filed May 24, 2019, the disclosures of which are incorporated herein by reference in their entireties. Such paddles stabilize and compress the breast while reducing the discomfort associated with compression paddles having only a firm compression surface.

[0040] The foam at least partially conforms to the breast when the paddle is lowered and compresses, thus stabilizing the breast for imaging without requiring the compression pressure typical in breast imaging systems. The foam can also be placed directly under the breast (e.g., secured to a breast support platform). In addition, the foam can be placed on the portion of the compression paddle and breast platform facing the chest wall. As the compression paddle is lowered, the foam contracts and assumes a curved shape that approximates the shape of the breast. However, unlike hard plastic compression paddles, the compression force does not need to be high enough to completely flatten the breast. Rather, the foam described herein is utilized to stabilize the breast and does not necessarily provide the full compression typically achieved by flat, rigid compression paddles (or by breast compression elements with a very thin layer of foam placed thereon). Because the breast is not flat in conventional mammogram systems, the appearance of the breast will be different (depending on the level of compression of the particular volume of interest), but this appearance can be corrected by image processing algorithms. However, for imaging systems such as tomosynthesis, the foam will only appear in slices outside the breast boundary. For slices inside the breast, the structure will be blurred and invisible. Therefore, the foam-based paddles described herein can be used for both mammography and tomosynthesis imaging, although some post-imaging processing may be required to realize its full benefits.

[0041] 2A-2C are various views of a breast compression paddle 200 having a foam compression element 202 secured to a rigid base 204. FIGS. 2A-2C are described in parallel. The paddle 200 includes a bracket portion 206, generally integral with the base 204, for connecting the paddle to a compression arm of an imaging system. The bracket portion 206 is generally a reinforcing portion of the paddle 200 and may be made from the same material as the rigid base 204. In an example, the bracket portion is integrally formed with the rigid base 204. The paddle 200 also includes a leading edge surface 208 opposite the bracket portion 206, which is positioned adjacent to the patient's chest wall during compression and imaging procedures. In an example, the base may be rigid. As used herein, the term "rigid" does not mean that the base 204 is inflexible during breast compression, but rather that the base 204 exhibits more resistance to bending or deformation than the foam compression element 202 secured to the bottom of the base 204. Raised wall 204a provides additional stiffness.

[0042] The foam compression element 202 may be secured to the bottom surface of the substrate 204 with a chemical adhesive. In other examples, the upper surface of the compression element may be a hard plastic or other material to which the foam compression element 202 is secured. A number of bolts, hooks, or other mechanical fasteners (not shown) may be used to connect the hard plastic to the rigid substrate 204 of the paddle 200. If such mechanical fasteners are used, it may be desirable to position the fasteners away from areas of the foam compression material 202 that are expected to compress against the breast to avoid pressure points and the resulting discomfort associated therewith, and to prevent artifacts from appearing in any resulting x-ray images.

[0043] The foam compression element 202 includes several edge surfaces. A leading edge surface 210 is positioned adjacent to the leading edge face 208 of the base plate 204 so as to be positioned adjacent to the patient's chest wall during compression and imaging procedures. A trailing edge surface 212 is positioned opposite the leading edge surface 210, adjacent to the bracket portion 206. Lateral edge surfaces 214, 216 are also depicted. Generally, these lateral edge surfaces 214, 216 may be described as medial or lateral lateral edge surfaces, consistent with the terminology typically used to describe the medial and lateral sides of the breast. Of course, those skilled in the art will recognize that the same compression paddle 200 may be used to compress either breast, one at a time, which would effectively change the application of the terms "medial" and "lateral" to the lateral edge surfaces of the foam compression material 202. Additionally, a central plane 220 is positioned between the lateral edge surfaces 214, 216 at approximately their midpoint. The central plane 220 is disposed substantially perpendicular to the compression surface 218 disposed on the underside of the foam compression material 202. A portion of the compression surface 218 will contact the breast during compression. In another example, the foam compression material 202 may be covered with a biocompatible cover, which may prevent the foam compression material 202 from absorbing bodily fluids. In an example, it may be disposable or cleanable. To improve the patient experience, the cover may be made of a soft material where it contacts the patient. To prevent fluids from penetrating into the foam compression material 202, an opposing plastic side may contact the foam compression material 202. An interface 222 is located where the compression surface 218 meets the leading edge surface 210. The shape of the interface 222 helps define the foam compression material 202 and its function during compression.

[0044] Because thick foam compression elements reduce breast visibility during positioning, proper positioning of the breast prior to compression can be beneficial. Accordingly, the techniques described herein incorporate features that help increase breast visibility. Additionally, access to the breast can also be increased by using the techniques described herein. These include utilizing thick foam compression elements that can move (e.g., horizontally) relative to the compression arms and / or breast support platform of the breast imaging system. In such cases, the compression arms can be lowered toward the patient's breast with better breast visibility and access for the imaging technician. Once a predetermined distance from the breast, the foam compression element can be moved to the desired location appropriate for compression, and then the compression arms can be further lowered until contact with the breast is made.

[0045] 3A and 3B depict a breast imaging system 300 similar to that depicted in FIGS. 2A-2C and having a breast compression paddle 200 connected to a rail system 310. FIGS. 3A and 3B are described in parallel. The breast compression paddle 200 includes a foam compression element 202 secured to a bottom surface of a rigid substrate 204. A bracket portion 206 allows the breast compression paddle 200 to be secured to a compression arm 301 of the imaging system 300, as depicted in FIGS. 1A and 1B, although not all elements are depicted in FIGS. 3A and 3B. Other features of the breast compression paddle 200 are described above with respect to FIGS. 2A-2C and therefore will not necessarily be described further. The imaging system 300 includes a breast support platform 302 for supporting a breast (a test phantom 304 is depicted). The compression arm 301 includes an actuator 306 that can be used to move the compression arm along an axis A that is substantially perpendicular to the support platform 301. Compression arm 301 includes a lever 308 that can be actuated to releasably connect a rail system 310 to it. Typically, it is a lever 308 that connects a known rigid paddle to compression arm 301. Rail system 310, in this example, includes a single rail 312 that extends to one side of compression arm 301. In other examples, the single rail 312 may extend to both sides of compression arm 301, thus improving the versatility of rail system 310. A rail system 310 that extends to both sides of compression arm 301 may provide easier access to the breast for the technician. In such examples, compression paddle 200 can be slid in either direction depending on the side of the imaging system on which the technician is standing, technician preference, or other factors.

[0046] Returning to this example, carriage 314 is movably engaged with single rail 312. Carriage 314 may include rollers configured to roll along single rail 312. In another example, carriage 314 may include one or more hooks or collars configured to surround rail 312 and slide or glide thereon. Additional configurations are described herein. Rail 312 and / or carriage 314 (or components thereof) may be fabricated from or coated with one or more low-friction materials to improve performance. Carriage 314 may include a lever 316 similar to lever 308 described above, but configured to be releasably secured to compression paddle 200, e.g., bracket portion 206 thereof.

[0047] FIG. 3A depicts the compression paddle 200 in a first position, with the centerline C of the compression arm 301 A is the center line C of the compression paddle 200 P 3B depicts the compression paddle 200 in a second position. In this second position, the centerline C of the compression paddle 200 is aligned with the centerline C of the compression paddle 200. Precise alignment is not required. Instead, the term "substantially aligned" herein refers to the position of the compression paddle 200 during the compression and imaging procedure; i.e., the compression paddle 200 is typically centered on the compression arm 301 to distribute force evenly on the breast 304. FIG. 3B depicts the compression paddle 200 in a second position. In this second position, the centerline C of the compression paddle 200 is aligned with the centerline C of the compression paddle 200. P is the center line C of the compression arm 301 A In this second position, the sides of the rigid substrate 204 are not substantially aligned with the centerline C AWhile in the first position, the side of the rigid substrate 204 is positioned on a single side of the support platform 302, in the second position, the side of the rigid substrate 204 is positioned on the opposite side. In the second position, the compression paddle 200 is moved away from the side of the compression arm 301. In some examples, a significant portion of the compression paddle 200 may extend beyond the side edge of the support platform 302. In some examples, the centerline CP of the compression paddle 200 may be positioned beyond the side edge. In other examples, in the second position, the rightmost edge of the compression paddle 200 may be positioned beyond the leftmost edge of the support platform 302. This range of motion of the compression paddle 200 significantly improves visibility of and access to the patient's breast 304. While the depicted configuration depicts the compression paddle 200 having its second position on the left side of the compression arm 301, in other examples, the second position of the compression paddle 200 is to the right of the compression arm 301. In other examples, the compression arm 200 may extend to both the left and right sides of the compression arm 301.

[0048] In the depicted rail system 310, the movement M of the compression paddle 200 is in a direction substantially parallel to the patient's chest wall. However, with modifications, the rail 312 can include a slightly curved shape, which would allow the compression paddle 200 to move to either side of the compression arm 301, generally toward or away from the patient at the same time.

[0049] The movement M of the compression paddle 200 may be a sliding movement. As used herein, the term "sliding" refers to the apparent movement of the compression paddle 200 relative to the compression arm 301, for example, as perceived by a patient. The sliding movement gives the impression of a professionally manufactured imaging system, which may increase patient comfort during compression and imaging procedures. Any type of rail system that generates this apparent sliding movement may be utilized. Various examples are depicted in FIGS. 4A-4C. FIG. 4A depicts a rail system 400a that includes, for example, a rail 402a having a partially smooth outer surface and a carriage 404a movably disposed thereon. The carriage 404a includes a plurality of wheels or rollers 406a that engage with the rail 402a at its upper side, allowing the carriage 404a to roll along the rail 402a. One or more gears 408a may be disposed on the underside of the rail 402a and may define a rack 410a for engagement by the gears 408a. The gears 408a may be driven by a motor 412a to actuate the carriage 404a and move it along the rail 402a. In other examples, the rail system need not be motorized and may instead include rollers above and / or below the rail. In that configuration, the carriage 404a (and the compression paddle attached thereto) may be manually actuated from a first position to a second position. FIG. 4B depicts another example, in which the rail system 400b includes a rail 402b in the form of a lead screw. A carriage 404b in the form of or including a nut may be engaged with and moved along the lead screw 402b. The motor 412b may rotate the lead screw 402b to actuate the carriage 404b. 4C, a rail system 400c includes a smooth rail 402c. A plurality of hangers or collars 406c at least partially engage and / or surround the rail 402c and connect the rail 402c to a carriage 404c. The hangers 406c and / or the rail 402c may be coated with a low-friction coating or made from a low-friction material.As noted above, the compression paddles may be connected to any of the carriages depicted in Figures 4A-4C using brackets, as known in the art. Rail systems 400A-400C may be modified as needed and utilized with other examples of rail systems described in the context of Figures 5A and 5B. The required modifications will be apparent to those skilled in the art.

[0050] 5A and 5B depict a breast compression paddle 500 having a rail system 502 incorporated therein. Unlike the example of FIGS. 3A and 3B, in which the compression paddle is removably secured to a slidable carriage, which is in turn removably secured to a compression arm, the example of FIGS. 5A and 5B utilizes a compression paddle 500 made from a rigid base 504 and a foam compression element 506 movably secured to the rigid base 504 via a rail system 502. More specifically, the foam compression element 506 is secured to a bridge 508, which can be rigid, semi-rigid, or flexible. In the example, the bridge 508 is a radiopaque screen spanning two collars 510 positioned adjacent each side of the foam compression element 506. The collars 510 are slidably engaged with two rails 512, one positioned adjacent each sidewall 514 of the rigid base 504. Rail 512 may be integrally formed with a larger mounting portion 516 configured to be attached (e.g., suspended, although mechanical fasteners may also be used) to a sidewall 514 of rigid substrate 504. While a low-friction collar 510 slidably engaged with rail 512 is depicted, other configurations such as those depicted in Figures 4A-4C above may also be utilized. Thus, consistent with that disclosure, rail system 502 depicted in Figures 5A-5B may be motorized.

[0051] The compression paddle 500 includes a bracket 518 that can be removably secured to a compression arm 520 of an imaging system, as known in the art. In an example, the rigid base 504 can be any known in the art having a flat, concave, or other bottom compression surface 522. The rail system 502 can be secured thereto, and the foam compression element 506 can be movably secured to the rail system 502. Thus, the foam compression element 506 is movably secured relative to the rigid base 504 of the compression paddle 500. In this case, the slidable movement of the foam compression element 506 is substantially perpendicular to the patient's chest wall. That is, in a first position depicted in FIG. 5A , the foam compression element 506 is positioned substantially below or behind the bracket 518 and compression arm 520 (relative to the patient). In a second position depicted in FIG. 5B , the foam compression element 506 is positioned substantially below the rigid base 504 (and in front of the bracket 518 relative to the patient).

[0052] FIG. 6 depicts a method 600 of positioning a breast for x-ray imaging. The method begins with placing the breast on a support platform of an x-ray imaging system, such as a tomosynthesis, mammography, or combination system (operation 602), as described elsewhere herein. Once the breast is so supported, method 600 continues with operation 604, which involves moving a rigid substrate in a direction substantially perpendicular to the support platform on which the breast rests. This movement, in one example, is consistent with a technician holding the breast in place while lowering compression paddles toward the breast and support platform. Due to the position of the compression paddles (e.g., not directly above the breast) or the material of the rigid substrate (e.g., translucent or transparent), the breast remains largely within the technician's field of view, allowing the technician to position and reposition the breast as needed. Method 600 continues with moving a foam compression element in a direction substantially parallel to the support platform (operation 606). In examples, consistent with those provided herein, this may include moving the rigid substrate in a direction substantially parallel to the support platform, or in other examples, the rigid substrate need not be moved in a direction substantially parallel to the support platform. Furthermore, this movement of the foam compression element may be substantially parallel or perpendicular to the patient's chest wall, depending on the system used. In other examples, movement in two axes (relative to the chest wall) is also contemplated.

[0053] Method 600 continues with operation 608, moving the rigid substrate. In an example, this operation may include moving the rigid substrate in a direction substantially parallel to the support platform. This operation assumes movement between a second position in which the compression paddle is substantially not centered on the support platform and a first position in which it is centered. These positions are described elsewhere herein. For example, when used with the assembly depicted in FIGS. 3A and 3B, this movement may be performed simultaneously as the foam compression element is moved in operation 606. In another example, operation 608 may be performed after the foam compression element (e.g., foam compression element 506 in FIGS. 5A and 5B) has been moved to a position below the rigid substrate. In that example, operation 608 then assumes moving the rigid substrate and foam compression element together toward the breast. Regardless, as the rigid substrate and foam compression element are further lowered toward the breast, contact is made between the breast and the foam compression element (e.g., operation 610). Upon contact, breast compression may be increased by increasing the pressure applied to the breast tissue by the paddles. Once the desired compression force is reached, imaging may be performed. Of course, some of these actions may be reversed in whole or in part to release the breast from compression. Furthermore, some of these actions (e.g., lowering the rigid substrate and foam compression element, moving the rigid substrate and / or foam compression element in a direction substantially parallel to the support platform) may be performed by one or more motors, which may be controlled by a controller on the imaging system, or may be performed manually.

[0054] 7 depicts an exemplary x-ray imaging system 750 in a breast positioning state for a left mediolateral oblique (MLO) imaging orientation. The tube head 758 of the system 750 is oriented to be substantially parallel to the gantry 756 of the system 750 or otherwise not perpendicular to the flat portion of the support arm 760 on which the breast is placed. In this position, the technician can more easily position the breast without having to bend or squat below the tube head 758.

[0055] X-ray imaging system 750 includes a floor mount or base 754 for supporting x-ray imaging system 750 on a floor. A gantry 756 extends upward from floor mount 752 and rotatably supports both a tube head 758 and a support arm 760. Tube head 758 and support arm 760 are configured to rotate independently of one another and can be raised and lowered along a gantry face 762 to accommodate patients of different heights. An x-ray source, described elsewhere herein and not shown here, is disposed within tube head 758. Support arm 760 includes a support platform 764, which includes an x-ray receiver and other components (not shown) therein. A compression arm 766 extends from support arm 760 and is configured to linearly raise and lower a compression paddle 768 (relative to support arm 760) for compression of the patient's breast during an imaging procedure. In the depicted example, the compression paddle 768 is a rigid compression paddle 768. Together, the tube head 758 and the support arm 760 may be referred to as a C-arm. Several interfaces and display screens are disposed on the X-ray imaging system 750. These include a foot display screen 770, a gantry interface 772, a support arm interface 774, and a compression arm interface 776. Generally, the various interfaces 772, 774, and 776 may include one or more display screens, including one or more tactile buttons, knobs, switches, and capacitive touchscreens with graphic user interfaces (GUIs), to enable a user to interact with and control the X-ray imaging system 750.

[0056] Although many of the edges of the imaging system 750 that may contact the patient are rounded, even if these edges are considered “non-compressive” in that they are not intended to apply a compressive force to the breast, discomfort may still occur because these edges are made of hard plastic. More specifically, the support platform 764 contacts the patient primarily at edges 764a and 764c when the patient is being imaged in the CC imaging orientation, primarily at the chest wall. Side edges 764b and 764c may also contact the patient in the MLO imaging orientation. Another aspect of the technology contemplates improving patient comfort by applying separate foam compression elements to one or more of these edges, even if these edges are not considered compression surfaces in the same context in which the compression paddle 768 or support platform 764 are considered compression surfaces. One such foam compression element 778 is depicted by dashed coverage edge 764b.

[0057] FIG. 7A depicts a partial perspective view of another example of an X-ray imaging system 750′, and more specifically, a support platform 764′. A foam compression element 778′ extends across the entire front of the support platform 764′ and along its sides. This configuration is particularly useful for protecting the patient's axillary skin during MLO imaging procedures. In an example, the foam compression element 778′ may be covered with a waterproof or moisture-resistant coating that may prevent absorption of bodily fluids (e.g., sweat, blood, etc.) into the foam. The coating may be cleanable to allow use between subsequent patients, or the entire foam compression element 778′ may be removable and disposable to maintain desired hygienic conditions between patients.

[0058] Returning to FIG. 7 , some patients, such as those undergoing breast-conserving surgery, cyst removal, breast lift, etc., may experience particular discomfort at the site of the procedure. Accordingly, the techniques described herein also contemplate applying separate foam compression elements 768a to specific locations on the compression paddle 768 (or support platform 764) where the area is expected to contact the firm compression surface. These configurations cover separate portions of the firm compression surface, as opposed to substantially the entirety of the firm compression surface, as is the case, for example, with the larger foam compression elements of FIGS. 2A-2C . The separate foam compression elements 768a may cover approximately 10%, 20%, 30%, or 50% of the compression surface of the compression paddle 768 or support platform 764, where the compression surface is defined as the portion of the component that actually contacts the breast during full compression for the imaging procedure.

[0059] 8A and 8B depict perspective and exploded perspective views, respectively, of another example of a breast compression paddle 800 having a foam compression element 802. FIGS. 8A and 8B are described in parallel. The paddle 800 includes a bracket 804, which may be formed from one or more rigid (compared to the foam compression element 802) components. For example, the bracket 804 may include a connecting portion 806, which may be connected not only to an imaging system but also to a compression region 808, depicted in FIG. 8A as an upper flat surface of the foam compression element 802. This compression region 808 transmits forces applied by the imaging system to the foam compression element 802 (and ultimately the underlying breast). The foam compression element 802 may be secured to a rigid substrate 810, which may be received within a substrate receptacle 812 movably secured to the bracket 804, e.g., at the connecting portion 806, as further described herein. A disposable cover 814 is also depicted, but need not be utilized. The disposable cover 814 may allow the absorbent foam compression element 802 to be reused with different patients, even if the foam material is absorbent.

[0060] 8C and 8D are side views of the breast compression paddle 800 of FIGS. 8A and 8B with the foam compression element 802 in a first position and a second position, respectively. The elements of the paddle are described in the context of FIGS. 8A and 8B above and are not necessarily described further. Both the foam compression element 802 and the rigid substrate 810 may be described as having edges or edge surfaces. For example, both components have a first edge or edge surface 816 (depicted on the foam compression element 802 for clarity only) and a second edge or edge surface 818 (again, depicted on the foam compression element 802 for clarity only) disposed opposite the first. As can be seen in FIG. 8C, when the foam compression element 802 and the rigid substrate 810 are positioned below the compression region 808 of the bracket 804, a compression force is transmitted from the imaging system through the foam compression element 802 and the breast. In this first position, in the depicted example, both the first edge 816 (and edge surface) and the second edge 818 (and edge surface) are positioned below the compression area 808, helping to ensure uniform force distribution. In FIG. 8D , the foam compression element 802 and rigid substrate 810 have been moved to a second position. This movement is enabled by movement of the substrate receptacle 812 relative to the bracket 804, as further described herein. When in the second position, only the first edge 816 (and edge surface) is positioned below the compression area 808. In the second position, breast compression is typically not performed; however, by placing the foam compression element 802 in the depicted location, a technician's access to the breast for positioning may be improved. Additionally, by placing the foam compression element 802 in the second position, visible light, which is substantially coextensive with the emitted x-ray radiation, may be more easily aligned with the breast, helping to ensure proper x-ray imaging.

[0061] FIG. 8E depicts an exploded perspective view of the bracket 804 of the breast compression paddle of FIGS. 8A-8D. In the depicted example, three main parts or components are utilized. These include a chassis 820, a top cover 822, and a bottom cover 824. While each part may be formed from robust molded plastic (e.g., as is known in paddle manufacturing), it may be advantageous to fabricate the chassis 820 from a cast and / or machined metal since the drive system for moving the foam compression element is disposed therein. The top cover may be fabricated primarily from molded radiolucent plastic due to its incorporation of the compression region 808 and connecting portion 806. In other examples, the chassis 820 may form all or part of the connecting portion, which may add additional structural integrity to the bracket 804. A bottom cover 824 made from molded plastic may be incorporated to improve appearance.

[0062] FIG. 8F depicts an interior view of chassis 820, which may include a body 826 made from materials as described above. The body at least partially defines a hollow interior volume 828 within which drive system components may be disposed. The drive system may include one or more lead screws 830, which may be driven by a motor 832. Rotation of lead screw 830 by motor 832 advances a nut 834 axially therealong. Nut 834 is connected to a board receptacle, as described elsewhere herein. To balance the forces, the drive system may include a rail 836 disposed opposite lead screw 830, with a bearing mount 838 movably disposed along rail 836. Bearing mount 838 is connected to the opposite side of the board receptacle in a configuration that may be similar to the connection between the board receptacle and nut 834. One or more encoders 840 or other position sensors may be positioned in various locations to detect movement (e.g., rotational, linear, relative position) of the various components. In yet another example, both elements 830 and 836 may be lead screws, and elements 834 and 838 may be nuts. In such a configuration, a belt (not depicted) may connect the two lead screws, and a single motor 832 may drive the rotation of both lead screws 830, 836. Drive systems utilizing multiple motors (e.g., two unidirectional motors or two motors rotating a single one of the two lead screws) may also be utilized. Other drive systems may also be utilized. For example, chain, belt, or cable drive systems are envisioned. Rack and gear drive systems may also be utilized. In another example, one or both of lead screw 830 and rail 836 may be replaced with a magnetic levitation system.

[0063] 9A-9F depict various views of components of a connection system 850 for connecting a foam compression element 802 to a compression paddle 800. While FIGS. 9A-9F are described in parallel, not all components are necessarily depicted in every view, and these features are not described again as they are depicted with respect to FIGS. 8A-8F above. FIG. 9A is a perspective view of a compression paddle 800 during installation of a foam compression element 802 via a connection system 850. The foam compression element 802 is mounted to a rigid substrate 810, which includes multiple lips 852 that protrude outward beyond the sides of the foam compression element 802. In an example, the multiple lips 852 may protrude from a portion of the side of the rigid substrate 810, as depicted in this example. Additionally, the multiple lips 852 also protrude from the back surface of the rigid substrate 810, allowing for better engagement. The substrate receptacle 812 defines grooves 854 for receiving a plurality of lips 852. A flange 856 (most easily visible in FIG. 9C ) protrudes from the underside surface of the rigid substrate 810 and can be used to help guide the rigid substrate 810 into the grooves 854 of the substrate receptacle 812. The substrate receptacle 812 can include a housing 858 protruding from a side thereof. The housing 858 is configured to receive a movable pin 860 including a head 862 and a tip 864. When the pin 860 is in the retracted position depicted in FIGS. 9D and 9E , the rigid substrate 810 can be slid into and out of the substrate receptacle 812. Once the rigid substrate 810 is fully inserted into the substrate receptacle 810, the pin 860 may be advanced to an extended position such that the tip 864 may protrude into a recess 866 defined by the edge 852 of the rigid substrate 810. In an example, the tip 864 may be biased to the extended position depicted in FIG. 9F using a spring disposed within the housing 858. In another example, the tip 864 may include a tapered leading edge for easier insertion of the rigid substrate 810 into the substrate receptacle 812. The pin 860 may also be configured to remain in the extended position of FIG. 9F unless operated in a specific sequence (e.g., rotated before retracting).

[0064] FIG. 9G depicts another example of a connection system 870 for connecting a foam compression element 872 to a compression paddle 874. As depicted elsewhere herein, the foam compression element 872 is secured to a rigid substrate 876. The compression paddle 874 includes a mount 878 that is movably secured to a drive system within the compression paddle 874, for example, as depicted in FIG. 8F. The mount 878 may include several features that enable connection to the rigid substrate 866. For example, one or more magnets 880a may be configured to engage corresponding magnets 880b on the rigid substrate 876. The magnets 880a, 880b may be neodymium magnets, electromagnets, or other magnets that may robustly secure the rigid substrate 866 to the mount 878, particularly during the movements and compressions described herein. Mating alignment features 882a, 882b on both the mounting portion 878 and the rigid substrate 876, which may be in the form of mating raised and recessed structures, molded magnets, etc., may also help align the magnets and further secure the rigid substrate 876.

[0065] 10A and 10B depict examples of an interface 900 between a mounting portion 902 and a board receptacle 904. In interface 900a of FIG. 10A, the board receptacle 904 may include a vertical protrusion 906 that may extend upward into a chassis (not shown) and connect to the mounting portion 902. In interface 900b, the mounting portion 902 may include an extension 908 that may extend downward out of the chassis (not shown) and connect to the board receptacle 904. These interface 900a, 900b configurations are two of several examples of interfaces that may be utilized. In general, the elongated extension 908 may be desirable to provide clearance between the board receptacle 904 and the bracket's bottom cover (not shown). This increased clearance reduces interference during movement of the foam compression element, increases access to other components of the receptacle as described elsewhere herein, or otherwise allows improved access to the patient's breast or other system components. The substrate receptacle 904 may also include hooks 910 or other features for attaching a disposable cover (e.g., used to cover the foam compression element) to the receptacle 904 for easy removal and replacement thereof between different patients.

[0066] 11A-11C depict examples of substrate receptacles 904a-904c. Each of the depicted substrate receptacles 904a, 904b, 904c includes an extension 906 that can be used to connect the substrate receptacle 904a, 904b, 904c to a feature of a drive system, for example, as depicted above. The substrate receptacle 904a does not include any features for attaching a disposable cover, as initially described in the context of FIG. 10A. The substrate receptacle 904b includes a hook 910 protruding from the underside of the receptacle 904b, while the substrate receptacle 904c includes a hook 910 protruding from the side of the receptacle 904c. In other examples, pins, buttons, tabs, or other structures can be used to secure a disposable cover over the foam compression element.

[0067] FIG. 12 depicts another configuration of a breast stabilization element 1000, which includes a foam compression element 1002 secured to a rigid substrate 1004. The substrate may include one or more edges 1006 extending outward therefrom, which are configured for engagement with a substrate receptacle, as described elsewhere herein. A flange 1008 projects downwardly from the rigid substrate 1004. The flange 1008 may serve multiple purposes. For example, the flange 1008 may function as a guide during insertion of the rigid substrate 1004 into the substrate receptacle. In another example, the flange 1008 may serve as an area of ​​adhesion for a flexible cover 1010, which may be positioned to at least partially surround the foam compression element 1002. The flexible cover may be moisture or other fluid-resistant or decorative, may be softer than the foam compression material itself, etc. By not adhering the flexible cover 1010 to the foam compression element 1002, the foam compression element 1002 can deform and deflect as designed. The incorporation of the flange 1008 and adhering the cover 1010 thereto can help reduce or eliminate small surfaces or interfaces that would require cleaning between different patients.

[0068] 13 depicts another configuration of a breast stabilization element 1100, which includes a foam compression element 1102 secured to a rigid substrate 1104. The substrate may include one or more edges 1106 extending outward therefrom, the edges 1106 being configured for engagement with substrate receptacles, as described elsewhere herein. Here, the foam compression element 1102 includes a substantially beveled shape shaped to extend outward in one or more directions from the rigid substrate 1104. Thus, the outer edges 1108 of the foam compression element 1102 may protrude further away from the edges 1106 of the rigid substrate 1104. This may help reduce the potential for contact between the rigid substrate 1104 and the patient's breast.

[0069] FIG. 14 depicts a method 1200 of positioning a breast for X-ray imaging. Method 1200 may begin with optional act 1202, which places the breast on a support platform, examples of which are depicted herein. Flow continues with act 1204, which involves moving a rigid substrate toward the breast in a direction substantially perpendicular to the support platform supporting the breast. Act 1206 envisions moving a foam compression element in a direction substantially parallel to the support platform. In examples, moving the rigid substrate (act 1204) includes an act of moving a first rigid substrate and an act of moving a second rigid substrate. In these examples, moving the foam compression element (act 1206) may be performed between the acts of moving the first rigid substrate and moving the second rigid substrate.

[0070] Various directional movements of the foam compression element and the rigid substrate are described herein. In examples, the direction substantially parallel to the support platform is substantially parallel to the chest wall, while in other examples, the direction substantially parallel to the support platform is substantially perpendicular to the chest wall. In some examples, moving the foam compression element in a direction substantially parallel to the support platform includes moving the rigid substrate in a direction substantially parallel to the support platform. Further, as depicted herein, each of moving the rigid substrate and moving the foam compression element is performed via at least one motor. Following the various movements, contacting the foam compression element with the breast (operation 1208) is performed, followed by the imaging procedure.

[0071] This disclosure has described several examples of technologies with reference to the accompanying drawings, in which only a few of the possible examples are shown. However, other aspects may be embodied in many different forms and should not be construed as limiting the examples set forth herein. Rather, these examples are provided so that this disclosure will be thorough and complete, and will fully convey the scope of possible examples to those skilled in the art.

[0072] Although specific examples have been described herein, the scope of the technology is not limited to those specific examples. Those skilled in the art will recognize other examples or modifications within the scope of the technology. Therefore, specific structures, acts, or mediums are disclosed as illustrative examples only. Examples of the technology may also combine elements or components that are generally disclosed but not explicitly illustrated in combination, unless otherwise stated herein. The scope of the technology is defined by the following claims and any equivalents thereof.

Claims

1. A breast compression paddle, the breast compression paddle comprising: a bracket for removably securing the breast compression paddle to a breast imaging system including an x-ray source and a breast support platform; a rigid substrate secured to the bracket, the rigid substrate having a first edge and a second edge disposed opposite the first edge; a foam compression element slidably secured to the first edge and the second edge; Breast compression paddles.

2. The breast compression paddle of claim 1 , further comprising a rail system for slidably securing the foam compression element to the rigid base.

3. The rail system comprises: a first rail fixed to the first edge; a second rail secured to the second edge; a first collar slidably secured to the first rail; a second collar slidably secured to the second rail; Equipped with The breast compression paddle of claim 2 , wherein the foam compression element is fixed relative to the first collar and the second collar.

4. The breast compression paddle of claim 3 , further comprising a bridge connecting the first collar and the second collar, the foam compression element being secured to the bridge.

5. The breast compression paddle of claim 4 , wherein the bridge is substantially parallel to a bottom surface of the rigid base.

6. 10. The breast compression paddle of claim 1, wherein the foam compression element is positionable between a first position disposed below the rigid base and a second position disposed substantially below the bracket.

7. 3. The breast compression paddle of claim 2, wherein the rail system comprises a single rail and a carrier slidably engaged with the single rail, the carrier being removably secured to a bracket secured to the rigid base plate.

8. The breast compression paddle of claim 6 , wherein the breast compression paddle is removably secured to a compression arm of the breast imaging system.

9. 9. The breast compression paddle of claim 8, further comprising a rail system for slidably securing the foam compression element to the rigid base, the rail system being removably secured to at least one of the compression arm and the rigid base.

10. 10. The breast compression paddle of claim 9, wherein in the first position, the rigid substrate is substantially centered on the compression arm and in the second position, the rigid substrate is substantially disposed to one side of the compression arm.

11. The breast compression paddle of claim 1 , wherein the breast support platform includes a non-compressing edge.

12. The breast compression paddle of claim 8 , wherein the compression arm is movably disposed between the x-ray source and the breast support platform.

13. 10. The breast compression paddle of claim 1, further comprising a base plate receptacle movably secured to the bracket, the rigid base plate having a third edge and a fourth edge disposed opposite the third edge, the third edge and the fourth edge being receivably secured to the base plate receptacle.

Images