Emission imaging device

Abstract

The utility model provides an emission imaging device. The emission imaging equipment comprises a bed body, a base, a detection ring and a treadmill mechanism, the detection ring and the treadmill mechanism are both arranged on the base, the bed body can move between a working position extending into the detection ring and an initial position located outside the detection ring in the first direction, and the treadmill mechanism is at least partially in contact with a to-be-detected body lying on the bed body located at the working position. And the detection ring is used for detecting the to-be-detected body in the motion load state, so that the to-be-detected body is in the motion load state. The treadmill mechanism can enable a to-be-detected body lying in the detection ring to be in a motion load state, and the detection ring can detect the to-be-detected body in the motion load state, so that when the emission imaging equipment provided by the utility model is used for detecting and imaging the to-be-detected body, the scanning imaging process can be synchronous with the motion load state of the to-be-detected body, and the detection efficiency is improved. The scanning imaging result of the to-be-detected body in the motion load state can be more accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of medical imaging, in particular to an emission imaging device. Background Art

[0002] Computed tomography (CT) is a major breakthrough in the field of medical imaging. Positron emission tomography (PET) is an imaging technology that can display the distribution of radionuclides at all levels in the body and provide three-dimensional images. Exercise stress testing is an important component of clinical electrocardiography. Exercise stress testing primarily increases cardiac load through exercise, increasing myocardial oxygen consumption and, in turn, affecting the body's oxygen supply and demand balance. It is used to assist in the diagnosis, differential diagnosis, efficacy evaluation, and prognosis assessment of coronary artery atherosclerotic heart disease (CHD) and other diseases. The treadmill test is a form of exercise stress testing.

[0003] Because imaging equipment typically requires the patient to lie down for imaging, existing exercise stress tests typically require the patient to exercise in an upright position before lying down in the imaging equipment for imaging. This results in a time lag between the patient's exercise stress state and the scanning imaging, resulting in inaccurate imaging results from exercise stress tests. Utility Model Content

[0004] To at least partially address the problems existing in the prior art, the present invention provides an emission imaging device. The emission imaging device includes a bed, a base, a detection ring, and a treadmill mechanism. The detection ring and the treadmill mechanism are both disposed on the base. The bed is movable along a first direction between a working position extending into the detection ring and an initial position located outside the detection ring. The treadmill mechanism at least partially contacts a subject to be examined lying on the bed in the working position, thereby placing the subject in a motion-loaded state. The detection ring is configured to detect the subject in the motion-loaded state.

[0005] The emission imaging device provided by the present invention has a pedal mechanism that can put the object to be inspected lying in the detection ring into a motion load state, and the detection ring can detect the object to be inspected in the motion load state. Therefore, when the emission imaging device provided by the present invention is used to detect and image the object to be inspected, the scanning imaging process can be synchronized with the motion load state of the object to be inspected, and the scanning imaging results for the object to be inspected in the motion load state can be more accurate.

[0006] Illustratively, at least one of the detection ring and the treadmill mechanism is slidably connected to the base along a first direction.

[0007] Illustratively, the detection ring is fixedly connected to the base, and the treadmill mechanism is slidably connected to the base.

[0008] Exemplarily, the base is provided with a sliding guide extending along a first direction, and the treadmill mechanism comprises a base, a sliding member provided on the bottom of the base and sleeved on the sliding guide, and the sliding member is slidable relative to the sliding guide along the first direction, so that the treadmill mechanism is slidably connected to the base along the first direction.

[0009] Exemplarily, the treadmill mechanism comprises a telescopic rod and a pedal assembly, one end of the telescopic rod is connected to the pedal assembly, and the other end of the telescopic rod is connected to one side of the base away from the sliding member, and the telescopic rod is telescopic along a second direction, and the second direction is perpendicular to the first direction.

[0010] Exemplarily, the emission imaging device comprises a bed body moving mechanism, the bed body moving mechanism comprises a support assembly and a first guide rail extending along a first direction, the support assembly is slidably connected to the first guide rail, and the bed body is connected to the support assembly.

[0011] Exemplarily, the support assembly comprises a cantilever support part and a column support part, the column support part is slidably connected to the first guide rail, the column support part is provided with a second guide rail extending along a second direction, the second direction is perpendicular to the first direction, the cantilever support part is slidably connected to the second guide rail, and the bed body is arranged on the cantilever support part.

[0012] Exemplarily, the detection ring has a detection aperture D, and the detection aperture D is not greater than 50 cm.

[0013] Exemplarily, the detection ring is used for myocardial perfusion imaging of a subject in a motion load state.

[0014] Exemplarily, the bed body and the treadmill mechanism are respectively located on two sides of the detection ring along the first direction.

[0015] A series of simplified forms are introduced in the utility model content, which will be further described in detail in the specific embodiment part. The utility model content part does not mean trying to limit the key features and necessary technical features of the claimed technical scheme, and more does not mean trying to determine the protection scope of the claimed technical scheme.

[0016] The advantages and features of the utility model will be described in detail below in combination with the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0017] The following drawings of the utility model are hereby part of the utility model for understanding the utility model. The embodiments of the utility model and the description thereof shown in the drawings are used to explain the principle of the utility model. In the drawings,

[0018] Figure 1 It is a perspective view of an emission imaging device according to an exemplary embodiment of the utility model, wherein a subject lies on a bed body;

[0019] Figure 2 For Figure 1 is a front view of the emission imaging device, wherein the subject lies on the bed body;

[0020] Figure 3 is a partial structure perspective view of the emission imaging device according to one exemplary embodiment of the present application; and

[0021] Figure 4 is a partial structure exploded view of the emission imaging device according to one exemplary embodiment of the present application.

[0022] Wherein, the above drawings include the following reference signs:

[0023] 100, bed body; 200, base; 210, sliding guide rod; 300, detection ring; 400, pedal mechanism; 410, base; 411, sliding member; 420, telescopic rod; 430, pedal assembly; 431, pedal; 500, bed body moving mechanism; 510, support assembly; 511, cantilever support part; 512, column support part; 5121, second guide rail; 520, first guide rail; 600, subject. DETAILED DESCRIPTION

[0024] In the following description, a large number of details are provided in order to allow a thorough understanding of the present application. However, it can be appreciated by those skilled in the art that the following description only exemplarily shows the preferred embodiments of the present application, and the present application can be implemented without one or more such details. In addition, in order to avoid confusion with the present application, some technical features known in the art are not described in detail.

[0025] The PET imaging device generally includes a detection ring, and a plurality of detectors are arranged on the detection ring. The detectors can include scintillation crystals and photoelectric sensors. The working process of the PET imaging device generally includes: injecting a tracer with radioactive substances into a subject, the tracer is absorbed by target organs and tissues due to some specific molecular structure, and unstable radioactive substances in the tracer decay to emit rays. The detectors of the emission imaging device convert the corresponding rays into electrical signals after receiving the rays, and finally the image reconstruction is completed according to the reconstruction algorithm of the back-end processor module. This nuclear medical imaging technology is a dynamic and functional imaging technology, which can observe information such as organ metabolism and blood flow state.

[0026] Exercise stress test is an important part of clinical electrocardiographic examination. Exercise stress test is mainly used to increase the heart load through exercise, increase the myocardial oxygen consumption, and then affect the oxygen supply and demand balance of the body, for the diagnosis, differential diagnosis, curative effect evaluation and prognosis evaluation of coronary atherosclerotic heart disease and other diseases. Exercise stress test has the advantages of simple operation, non-invasiveness and repeatability, and has become one of the indispensable examination methods for the diagnosis and evaluation of cardiovascular diseases. Among them, the treadmill test is a form of exercise stress test.

[0027] The PET imaging equipment is used for scanning and imaging the object under the motion load state, so that the myocardial blood flow and the blood flow reserve value can be measured, the difference between the normal myocardial blood flow and the ischemic myocardial blood flow after exercise can be displayed, the myocardial ischemia and the range and degree of the myocardial ischemia can be reflected, and the doctor can be assisted in diagnosis.

[0028] The utility model provides a kind of emission imaging equipment. Emission imaging equipment includes but is not limited to PET imaging equipment. The emission imaging equipment can realize the synchronization of the scanning imaging process of object and the motion load state of object, so, for the scanning imaging effect of object under the motion load state can be better.

[0029] Referring to Figure 1 And Figure 2The emission imaging device may include a bed 100, a base 200, a detection ring 300, and a treadmill mechanism 400. The detection ring 300 may be provided with a plurality of detectors, and a detection hole may be formed on the detection ring 300. The detection hole may be formed by surrounding a plurality of detectors. The detection ring 300 may detect the portion of the object to be examined 600 located within the detection hole. The detection ring 300 and the treadmill mechanism 400 may both be provided on the base 200. The bed 100 may be movable along a first direction (direction XX in the figure) between a working position extending into the detection ring 300 and an initial position located outside the detection ring 300. The bed 100 may be movable by itself, for example, the bed 100 may be provided with rollers at the bottom; the bed 100 may also be movable by being provided on a bed moving mechanism 500. This will be described in detail below in conjunction with specific embodiments. Since the bed 100 extends into the detection ring 300 when it is in the working position along the first direction XX, the bed surface of the bed 100 should be higher than the bottom of the detection hole in the detection ring 300. It is understood that any time the bed 100 is outside the detection ring 300, it can be considered to be in the initial position. Therefore, the initial position can be a collection of positions where the bed 100 is outside the detection ring 300, rather than being limited to a specific position. Similarly, the working position where the bed 100 extends into the detection ring 300 can also be a collection of positions where the bed 100 extends into the detection ring 300. For example, the working position of the bed 100 can be distinguished by the organ that the emission imaging device needs to detect. For example, when the emission imaging device is imaging the heart of the subject 600, when the heart of the subject 600 lying on the bed 100 is located at the center of the detection ring 300, the bed 100 can be considered to be in the working position. The working position here is of course not limited to a specific position. Depending on the position of the subject 600 lying on the bed 100, there can be a series of corresponding positions of the bed 100. When the bed 100 is in the working position, the area on the subject 600 lying on the bed 100 that needs to be detected by the detection ring 300 can be located at the center of the detection ring 300. For example, when the emission imaging device is detecting the heart of the subject 600, the heart of the subject 600 lying on the bed 100 in the working position can be located at the center of the detection ring 300. The treadmill mechanism 400 can at least partially contact the subject 600 lying on the bed 100 in the working position, so that the subject 600 can be placed in an exercise load state. When the bed 100 is in the working position, the subject 600 lying on the bed 100 can at least partially contact the treadmill mechanism 400. For example, the subject 600 can step on the pedal 431 of the treadmill mechanism 400 and use the treadmill mechanism 400 to achieve a treadmill motion. When the subject 600 achieves the treadmill motion through the treadmill mechanism 400, the subject 600 is placed in an exercise load state while lying on the bed 100.The detection ring 300 can be used to detect the object 600 in the motion load state. It can be understood that for the object 600 with different heights, the object 600 can adjust its posture after lying on the bed body 100, so that the object 600 lying on the bed body 100 in the working position can be at least partially in contact with the treadmill mechanism 400.

[0030] The emission imaging equipment provided by the utility model can make the object 600 lying in the detection ring 300 in the motion load state, and the detection ring 300 can detect the object 600 in the motion load state, so that when the object 600 is detected and imaged by the emission imaging equipment provided by the utility model, the scanning imaging process can be synchronized with the motion load state of the object 600, and the scanning imaging result of the object 600 in the motion load state can be more accurate.

[0031] In an embodiment of the utility model, referring to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , at least one of the detection ring 300 and the treadmill mechanism 400 can be slidably connected to the base 200 along the first direction X-X. The detection ring 300 and the treadmill mechanism 400 can be connected to the base 200 along the first direction X-X by shaft hole cooperation, magnetic attraction or other suitable forms. Among them, the detection ring 300 can be connected to the base 200 along the first direction X-X, and the treadmill mechanism 400 is fixedly connected to the base 200; the detection ring 300 can be fixedly connected to the base 200, and the treadmill mechanism 400 can be connected to the base 200 along the first direction X-X; the detection ring 300 and the treadmill mechanism 400 can be connected to the base 200 along the first direction X-X. In such an emission imaging equipment, the distance between the detection ring 300 and the treadmill mechanism 400 along the first direction X-X can be adjusted, which can be more suitable for objects 600 with different heights. When the object 600 with different heights lies on the bed body 100 in the working position, the object 600 can be in the motion load state through the treadmill mechanism 400, and the object 600 does not need to adjust its posture too much, and the detection process can be more comfortable.

[0032] Exemplarily, the detection ring 300 is fixedly connected to the base 200, and the treadmill mechanism 400 is slidably connected to the base 200. Since the detection ring 300 has a complex structure and a high cost, the detection ring 300 fixedly connected to the base 200 has higher stability, and can avoid being damaged in the moving process. Taking the detection and imaging of the heart of the subject 600 by the emission imaging device as an example, when the detection ring 300 is fixedly connected to the base 200, the bed body 100 can be moved along the first direction X-X, so that the heart of the subject 600 lying on the bed body 100 is located at the center of the detection ring 300, and at this time, the bed body 100 is located at the working position. On this basis, according to the different lengths of the subject 600, the treadmill mechanism 400 can be located at different positions relative to the detection ring 300 along the first direction X-X, so that the subject 600 lying on the bed body 100 located at the working position can be in a moving state by using the treadmill mechanism 400 to perform treadmill exercise. Of course, according to the different positions of the subject 600 lying on the bed body 100, the position of the treadmill mechanism 400 relative to the detection ring 300 along the first direction X-X also needs to be adjusted, which is not described herein. Such an emission imaging device can be adapted to subjects 600 of different lengths, and can be applied to more application scenarios, and the application range of the overall device is wider.

[0033] Exemplarily, referring to Figure 3 and Figure 4 , the base 200 can be provided with a sliding guide rod 210 extending along the first direction X-X. The treadmill mechanism 400 can include a base 410, and the bottom of the base 410 can be provided with a sliding piece 411 sleeved on the sliding guide rod 210. The sliding piece 411 is slidable relative to the sliding guide rod 210 along the first direction, so that the treadmill mechanism 400 is slidably connected to the base 200 along the first direction X-X. The sliding piece 411 can be provided with a through hole, and the sliding guide rod 210 can be arranged in the through hole, so that the sliding piece 411 can be sleeved on the sliding guide rod 210. In fact, the sliding piece 411 and the sliding guide rod 210 can be connected in a shaft hole fitting mode, and the sliding piece 411 can slide along the extension direction of the sliding guide rod 210, that is, the sliding piece 411 can slide along the first direction X-X, so that the base 410 can slide along the first direction X-X, and the treadmill mechanism 400 is slidably connected to the base 200 along the first direction X-X. In this way, the treadmill mechanism 400 can slide along the first direction X-X, and the overall structure is simpler and easier to realize.

[0034] Exemplarily, referring to Figure 3 and Figure 4The treadmill mechanism 400 may include a telescopic rod 420 and a pedal assembly 430. The pedal assembly 430 may include a pedal 431. One end of the telescopic rod 420 may be connected to the pedal assembly 430, and the other end may be connected to the side of the base 410 away from the sliding member 411. The telescopic rod 420 is telescopic along a second direction (direction YY shown in the figure), and the second direction YY is perpendicular to the first direction XX. When the emission imaging device is installed, the second direction YY may be a height direction. The pedal assembly 430 is connected to the base 410 via the telescopic rod 420 that is telescopic along the second direction YY, so that the position of the pedal 431 along the second direction YY can be adjusted. On this basis, the position of the pedal 431 along the second direction YY can be adapted to the position of the detection hole on the detection ring 300 along the second direction YY. When such an emission imaging device detects the subject 600, the subject 600 can be more comfortable, the effect of the subject 600 using the pedal assembly 430 on the pedal mechanism 400 to perform pedaling exercise can be better, and the detection ring 300 can also better detect the subject 600 under exercise load.

[0035] In one embodiment of the present invention, see Figure 1 and Figure 2 , the emission imaging device may include a bed moving mechanism 500. The bed moving mechanism 500 may include a support assembly 510 and a first guide rail 520 extending along a first direction XX. The support assembly 510 may be slidably connected to the first guide rail 520, and the bed 100 is connected to the support assembly 510. The support assembly 510 may slide relative to the first guide rail 520 along the first direction XX, so that the bed 100 may move along the first direction XX with the support assembly 510. For example, the support assembly 510 may be connected to a controller, and under the action of the controller, the support assembly 510 may drive the bed 100 to move along the first direction XX and stay at a suitable position. In this way, the bed 100 is movable along the first direction XX, the overall structure is more stable, the position control of the bed 100 is more precise, and the degree of automation of the overall equipment can also be higher.

[0036] Exemplarily, the support assembly 510 may include a cantilever support portion 511 and a column support portion 512. The column support portion 512 may be slidably connected to a first guide rail 520. The column support portion 512 may be provided with a second guide rail 5121 extending along a second direction YY, which is perpendicular to the first direction XX. The cantilever support portion 511 is slidably connected to the second guide rail 5121, and the bed 100 is disposed on the cantilever support portion 511. When the emission imaging device is installed, the second direction YY may be a height direction. The column support portion 512 may slide relative to the first guide rail 520 along the first direction XX, so that the second guide rail 5121 on the column support portion 512 can move along with the column support portion 512 in the first direction XX. The cantilever support portion 511, which is slidably connected to the second guide rail 5121, can also move along the first direction XX with the column support portion 512. Furthermore, the cantilever support portion 511 can slide relative to the second guide rail 5121 in the second direction YY, thereby driving the bed 100 to move along the second direction YY. This bed movement mechanism 500 can drive the bed 100 to move along both the first direction XX and the second direction YY, providing the bed 100 with greater degrees of freedom of movement. This emission imaging device can also be used with subjects 600 of various sizes, broadening the applicability of the overall device.

[0037] In one embodiment of the present invention, see Figure 3 and Figure 4 The detection ring 300 may have a detection aperture D, which may be no greater than 50 cm. Taking an emission imaging device including a PET imaging device as an example, in existing PET imaging devices, the detection aperture of the detection ring is typically 80 cm to 100 cm. This is because existing PET imaging devices typically require full-body imaging of the subject 600. In the emission imaging device provided by the present invention, when the detection aperture D of the detection ring 300 is no greater than 50 cm, imaging of the subject's 600 organs can be performed, such as imaging the heart of the subject 600. This allows the emission imaging device to be smaller, with lower overall costs, and higher detection sensitivity and resolution.

[0038] For example, the detection ring 300 can be used to perform myocardial perfusion imaging on a subject 600 undergoing exercise stress. Transmission imaging equipment can include a PET imaging device. Using PET imaging for myocardial perfusion imaging can provide absolute quantitative analysis of blood flow per gram of myocardium per minute. Performing myocardial perfusion imaging on a subject 600 undergoing exercise stress avoids the need for drug stress, and such transmission imaging equipment is less harmful to the subject 600.

[0039] In the emission imaging device provided by the present invention, the bed 100 and the treadmill mechanism 400 can be located on the same side of the detection ring 300 along the first direction XX, or can be located on both sides of the detection ring 300. When the bed 100 and the treadmill mechanism 400 are located on the same side of the detection ring 300 along the first direction XX, at least one of the bed 100 and the treadmill mechanism 400 needs to be able to move a long distance along the first direction XX, so that the length of the entire device along the first direction XX will be relatively long. For example, see Figure 1 and Figure 2 The bed 100 and the treadmill mechanism 400 can be positioned on either side of the detection ring 300 along the first direction XX. When the bed 100 and the treadmill mechanism 400 are positioned on either side of the detection ring 300 along the first direction XX, the distance that the bed 100 and the treadmill mechanism 400 can move along the first direction XX does not need to be very long. Such a transmission imaging device can be shorter in length along the first direction XX, occupying less space and reducing overall cost.

[0040] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front", "back", "up", "down", "left", "right", "horizontal", "vertical", "vertical", "horizontal", "top", "bottom", etc. are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside" and "outside" refer to the inside and outside relative to the outline of each component itself.

[0041] For ease of description, area-relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the regional positional relationship between one or more components or features shown in the figures and other components or features. It should be understood that area-relative terms include not only the orientation of the components as described in the figures, but also different orientations in use or operation. For example, if the components in the drawings are inverted as a whole, the situation where the components are "above other components or features" or "above other components or features" will include the situation where the components are "below other components or structures" or "below other components or structures". Thus, the exemplary term "above" may include both the orientations "above" and "below". In addition, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and this document is intended to include all of these situations.

[0042] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, parts, components and / or combinations thereof.

[0043] It should be noted that the terms "first," "second," and the like in the specification and claims of the present invention and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, such that the embodiments of the present invention described herein can be implemented in an order other than that illustrated or described herein.

[0044] The present invention has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative and illustrative purposes only and are not intended to limit the present invention to the described embodiments. Furthermore, those skilled in the art will appreciate that the present invention is not limited to the above embodiments and that various variations and modifications may be made based on the teachings of the present invention, all of which fall within the scope of the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A transmission imaging device, characterized in that The invention comprises a bed, a base, a detection ring and a treadle mechanism, wherein the detection ring and the treadle mechanism are both arranged on the base, and the bed is movable along a first direction between a working position extending into the detection ring and an initial position located outside the detection ring, and the treadle mechanism is in at least partial contact with an object to be inspected lying on the bed at the working position, so that the object to be inspected is in a motion load state, and the detection ring is used to detect the object to be inspected in the motion load state.

2. The emission imaging device according to claim 1, wherein At least one of the detection ring and the treadmill mechanism is slidably connected to the base along the first direction.

3. The emission imaging device according to claim 2, characterized in that The detection ring is fixedly connected to the base, and the treadmill mechanism is slidably connected to the base.

4. The emission imaging device according to claim 3, characterized in that A sliding guide rod extending along the first direction is provided on the base, and the treadmill mechanism includes a base. A sliding member is provided at the bottom of the base and is sleeved on the sliding guide rod. The sliding member can slide relative to the sliding guide rod along the first direction so that the treadmill mechanism can be slidably connected to the base along the first direction.

5. The emission imaging device according to claim 4, characterized in that The treadmill mechanism includes a telescopic rod and a pedal assembly, one end of the telescopic rod is connected to the pedal assembly, and the other end is connected to a side of the base away from the sliding member. The telescopic rod is telescopic along a second direction, which is perpendicular to the first direction.

6. The emission imaging device according to claim 1, characterized in that The emission imaging device includes a bed moving mechanism, which includes a support assembly and a first guide rail extending along the first direction. The support assembly is slidably connected to the first guide rail, and the bed is connected to the support assembly.

7. The emission imaging device according to claim 6, characterized in that The support assembly includes a cantilever support part and a column support part, the column support part is slidably connected to the first guide rail, and the column support part is provided with a second guide rail extending along a second direction, the second direction is perpendicular to the first direction, the cantilever support part is slidably connected to the second guide rail, and the bed body is provided on the cantilever support part.

8. The emission imaging device according to claim 1, wherein: The detection ring has a detection aperture D, and the detection aperture D is no greater than 50 cm.

9. The emission imaging device according to claim 8, characterized in that The detection ring is used to perform myocardial perfusion imaging on the subject under the motion load state.

10. The emission imaging device according to claim 1, wherein The bed body and the treadmill mechanism are respectively located on two sides of the detection ring along the first direction.

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