3408results about "Patient positioning for diagnostics" patented technology

An apparatus comprising a radiation source, coincident positron emission detectors configured to detect coincident positron annihilation emissions originating within a coordinate system, and a controller coupled to the radiation source and the coincident positron emission detectors, the controller configured to identify coincident positron annihilation emission paths intersecting one or more volumes in the coordinate system and align the radiation source along an identified coincident positron annihilation emission path.

A controlling system method docking for a mobile patient bed with a medical device. The method may include: obtaining, based on a docking instruction, positioning information of a target; controlling, based on the positioning information of the target, a movement of the mobile patient bed; and in response to determining that the mobile patient bed moves into a docking region of the medical device, controlling the mobile patient bed to dock with the medical device using a first docking structure on the mobile patient bed and a second docking structure on the medical device, wherein the first docking structure and the second docking structure are mechanical connection structures. By adopting the embodiments of the present disclosure, an operator may carry a mobile device to move, and control the movement of the patient bed by continuously changing a position of the mobile device, or may enable the patient bed to obtain an automatically planned path through the positioning information of the medical device and to move along the automatically planned path.

Embodiments of the present invention relate generally to implant placement into bone. More specifically, embodiments of the invention relate to implant placement across the sacroiliac joint. Placement can be facilitated using various CT imaging views that allow the implants to be placed in bone associated with articular cartilage.

A method to position a subject to be scanned in a positron emission tomography (PET)-scanning device (1) is presented. According to this method, the subject to be scanned (P) is prepositioned in the PET-scanning device (1) and a set of PET-raw data is acquired of the subject to be scanned (P) for a series of slices by means of a detector (11) of the PET-scanning device (1). The acquired set of PET-raw data is represented in the form of at least one projection view, and the position of the subject to be scanned (P) relative to the detector (11) is directly assessed based on this at least one projection view. Furthermore, a PET-scanning device (1) configured to carry out this method and a computer program for controlling such a PET-scanning device are provided.

Described herein are methods for beam station delivery of radiation treatment, where the patient platform is moved to a series of discrete patient platform locations or beam stations that are determined during treatment planning, stopped at each of these locations while the radiation source rotates about the patient delivering radiation to the target regions that intersect the radiation beam path, and then moving to the next location after the prescribed dose of radiation (e.g., in accordance with a calculated fluence map) for that location has been delivered to the patient.

An apparatus comprising a radiation source, coincident positron emission detectors configured to detect coincident positron annihilation emissions originating within a coordinate system, and a controller coupled to the radiation source and the coincident positron emission detectors, the controller configured to identify coincident positron annihilation emission paths intersecting one or more volumes in the coordinate system and align the radiation source along an identified coincident positron annihilation emission path.

For a biopsy guided by contrast-enhanced x-ray imaging, a breast imaging system may image a patient's breast subsequent to injection of contrast agent to locate a site for biopsy and / or position a biopsy device relative to the site. Once a tissue specimen is removed from the site for diagnostic evaluation, a confirmation that the specimen was removed from an intended area of interest for biopsy is performed using the systems and methods described herein. For example, the breast imaging system and / or a separate specimen imaging system may capture high and low energy images of the specimen, subtract the low energy image from the high energy image to generate a subtracted image of the specimen, and determine, based on the subtracted image, that the contrast agent is present within the specimen to confirm the site from which the specimen was removed is the intended site for biopsy.

A system and method for acquiring in vivo tomographic X-ray scatter data for tissue discrimination of breast tissue. The system includes a coded aperture for spatially encoding X-ray scatter originating from within a patient's breast. Detectors record the modulated scatter signal, which is used to reconstruct a spatially resolved estimate of the X-ray scatter spectra which can then be used to generate spatially resolved tissue type estimates for the user.

The present invention discloses a multi-mode oral CBCT device, which belongs to the technical field of medical devices. The present invention is scientific and reasonable, safe and convenient to use, and includes a lifting base, a jaw support mechanism, an L-arm mechanism, a rotary driven mechanism and a lateral detection mechanism; the lifting base is fixed on the ground, the jaw support mechanism is located on one side of the lifting base, the L-arm mechanism is fixed at the top of the lifting base, the rotary driven mechanism is rotatably connected to the bottom of the L-arm mechanism, and the lateral detection mechanism is fixed at the side end of the L-arm mechanism. The rotary mechanism of the present invention is located above the L-arm mechanism, the center of gravity of the structure moves upward, the moment of inertia is reduced, the stability of product performance is increased, the imaging is more accurate, and the service life of the product is extended. In addition, the detector and tube structure are simplified and the pressure of the lifting base is reduced. An automatic angle adjustment mechanism is set to use the weight of the chin to drive the cheek correction mechanism to automatically adjust, so that medical staff do not need to adjust the position of the patient's head, saving time for medical staff.

An x-ray breast imaging system includes a breast support platform including an x-ray receptor, and an x-ray tube head. The x-ray tube head includes an x-ray source configured to emit an x-ray beam in a direction towards the x-ray receptor, and a collimator. A filter assembly including a plurality of filter slots selectively positionable adjacent to the collimator, and a specimen imaging filter disposed within a slot of the plurality of filter slots. The specimen imaging filter includes at least one aperture defined therein. The specimen imaging filter also blocks a portion of the emitted x-ray beam so that the at least one aperture defines a path of the emitted x-ray beam towards the x-ray receptor.

A method and system for determining a PET image of the scan volume based on one or more PET sub-images is provided. The method may include determining a scan volume of a subject supported by a scan table; dividing the scan volume into one or more scan regions; for each scan region of the one or more scan regions, determining whether there is a physiological motion in the scan region; generating, based on a result of the determination, a PET sub-image of the scan region based on first PET data of the scan region acquired in a first mode or based, at least in part, on second PET data of the scan region acquired in a second mode; and generating a PET image of the scan volume based on one or more PET sub-images.

The invention relates to a motion control method for a movable component (BK, CA, M, PL) of a medical device (100), comprising the steps: i) acquiring (S01) three-dimensional image information (3DB) of the movable component (BK) and its environment (U) by means of a acquiring unit (EH); ii) determining (S02) a first position parameter (PP1) for the movable component (BK) based on the three-dimensional image information (3DB) by means of a processing unit (30); iii) acquiring (S03) a second position parameter (PP2) for the movable component (BK) by means of a processing unit (30); iv) comparing (S04) the first and the second position parameters (PP1, PP2) by means of a processing unit (30); v) generating (S05) a motion control signal (BSS) for the movable component (BK) based on the three-dimensional image information (3DB), provided that the deviation between the first and second position parameters (PP1,PP2) falls below a predefined first threshold (S1) by means of the processing unit (30), vi) generate (S06) an error signal (FS) if the deviation between the first and second position parameters (PP1, PP2) exceeds the first threshold (S1) by means of the processing unit (30), and vii) execute (S07) the motion control signal (BSS) by the moving component (BK) or the error signal (FS) by the processing unit (30).

The invention relates to the technical field of medical apparatus and instruments, in particular to a head CT positioning and adjusting device for radiology department, which comprises a CT machine and a scanning bed arranged on one side of the CT machine, a fixed fiber plate is arranged on the scanning bed, a twisted rod is movably arranged on the fixed fiber plate, a sleeving plate is arranged on the fixed fiber plate, and the twisted rod is movably arranged on the sleeving plate. A positioning assembly is arranged on the side, close to the scanning bed, of the fixing fiberboard, and the positioning assembly is used for conducting center positioning on the head of a patient under driving of the twist rod. The CT scanning device has the function of conducting positioning and auxiliary stabilization on the head of the patient when CT scanning is conducted on the patient, and it is avoided that when the patient is examined, the patient is too nervous to observe the periphery; the head of a patient can be driven to shake through the driving device, so that the head of the patient can be in a relatively static state in the whole scanning process, and meanwhile, the whole posture of the head of the patient can be adjusted and corrected in an auxiliary mode when the patient is in an unconscious state.

The invention discloses a CT scanning patient supporting framework, device and method based on vertical and horizontal dual-purpose adaptation, and relates to the technical field of CT equipment. The direction adjusting supporting structure is arranged on the bottom supporting base structure in a controllable positioning type through connection mode; the two groups of horizontal driving structures are respectively assembled at the top and bottom of the lifting upright post structure; the supporting assembly structure is in transmission assembly connection with the lead screw assembly; and the positioning assembly is arranged on the supporting assembly structure and is connected with the control module through a circuit. The problem that in the prior art, a CT scanning device is poor in adaptability corresponding to different vertical and horizontal states is solved.

A patient support apparatus includes a support surface including a topper. An opening is formed in a side of the support surface. A cavity extends from the opening into the support surface. An inlet port is positioned within the cavity and fluidly coupled to the topper. A pneumatic blower is configured to removably position within the cavity and has an outlet port that couples to the inlet port.

The invention provides a patient state auxiliary judgment and posture adjustment method, device and system, and relates to the technical field of medical equipment. The method comprises the following steps: acquiring real-time state data of a patient; generating a three-dimensional posture model and emotion parameters of the current body posture of the patient based on the real-time state data; according to the difference degree of the preset target posture and the three-dimensional posture model, a posture adjustment instruction is generated in combination with a manual adjustment instruction of a doctor; and based on the posture adjustment instruction, prompting the patient to adjust the posture until the difference degree is smaller than a preset threshold value and the emotion parameters are in a target emotion range and lasts for a preset duration, and confirming that the patient completes examination preparation. Through the technical scheme provided by the invention, the problems that accurate state judgment is difficult to obtain and posture auxiliary adjustment cannot be performed on the patient before the patient is examined are solved, the accuracy of state perception of the patient and the efficiency of posture adjustment are improved, and the examination experience of the patient is improved.

A method captures radiographic images of a patient using a common geometric relationship relative to an x-ray source, the patient and a digital detector. Change in the patient's health is assessed based on determined changes in the radiographic images of the patient. A time to capture a next radiographic image of the patient is automatically scheduled using the common geometric relationship.

The invention discloses a body position fixing device for radiology department examination, which comprises a bed body, a limiting mechanism, an unlocking mechanism and a plurality of fixing units, the limiting mechanism, the unlocking mechanism and the plurality of fixing units are arranged on the bed body, and the limiting mechanism and the unlocking mechanism are matched with the fixing units. Each fixing unit comprises a clamping plate, a first connecting rod, a second connecting rod, a crank, a movable block, a cylinder and a base, a movable groove is formed in the base, the cylinder is arranged in the movable groove and connected with the movable block, the second connecting rods are symmetrically arranged on the two sides of the movable block, the crank and the movable block are rotationally connected with the second connecting rods, and the crank is rotationally connected with the clamping plate; the clamping plate and the base are both rotationally connected with the first connecting rod. Through the application of the body position fixing device for examination in the radiology department, the operation process is simplified, the operation burden of medical staff is relieved, and the working efficiency of the medical staff is improved.

A tilted needle biopsy assembly is provided for mounting on an x-ray system. Because the biopsy needle is angled relative to at least one of the detector and the x-ray source, x-ray imaging may be performed during the biopsy procedure without interference by the biopsy device. The angled biopsy needle additionally allows improved access to the axilla and chest wall of the patient. The stereotactic biopsy device of the present invention may be coupled to any x-ray system, whether upright or prone, including but not limited to mammography systems, tomosynthesis systems, and combination mammography / tomosynthesis systems. The system flexibly supports the use of any mode of image capture (i.e., scout, two dimensional mammogram, three-dimensional reconstructed volume) for either or both target visualization and target localization. With such an arrangement, a needle biopsy assembly having improved patient coverage is provided for use with a variety of different x-ray imaging platforms.

The embodiments of the present disclosure provide medical imaging methods and systems. A method, implemented by a computing device including at least one processor and at least one storage device, comprises: obtaining a first target image of a target subject, the first target image being taken by a camera system; determining a marker in the first target image, the marker being configured to characterize a scanning position; and determining a scanning range of a medical imaging device for scanning the target subject based on the marker.

The invention relates to a body position auxiliary detection method and system based on DR equipment. The method comprises the following steps: performing coordinate alignment on pressure distribution data and three-dimensional depth information of a patient to generate an initial body position three-dimensional point cloud model; matching a corresponding reference skeleton-muscle model based on the registration information, generating a registered body position three-dimensional model through non-rigid registration, and extracting coordinates of key anatomical mark points; a target structure theoretical projection area is calculated by combining a DR equipment C arm projection angle, an angle deviation vector is acquired by comparing an actual projection boundary, and a dynamic correction mark is generated. According to the method, through space coordinate alignment, personalized model registration and real-time projection angle deviation correction, the accuracy and efficiency of body position placement are remarkably improved, radiation exposure caused by repeated shooting is reduced, and therefore the medical image quality and diagnosis reliability are remarkably improved.

The invention relates to a method for guiding the positioning of an imaging device (1) by means of a navigation system, to a corresponding computer-readable storage medium, to a computer program product, and to a control device, to an electronic device for guiding the positioning of an imaging device by means of a navigation system, to a corresponding navigation system, and to a medical system. The method comprises: a light source position acquisition step of acquiring a current position of an X-ray light source (1) in a navigation system; a mark point position acquisition step of acquiring a current position of a mark point (2) arranged on the patient under the navigation system; a projection position acquisition step of acquiring a first projection position of a mark point under the light source (1); and a display step of displaying the model of the field of view of the light source and displaying the model (3) of the mark point according to the first projection position. The position of the image equipment can be guided and adjusted in a visual mode, invalid shooting is reduced, radiation is reduced, and the difficulty of recognizing a target object such as a vertebral body is lowered.

The invention provides a medical CT hospital bed vertical lifting mechanism and a medical CT hospital bed, the medical CT hospital bed vertical lifting mechanism comprises a top plate, a shear fork mechanism, a driving system, a base, a detection device and a limiting device, the driving system comprises a rigid chain, a worm gear reducer, a servo motor and an electromagnetic brake, and the output end of the servo motor is connected with the worm gear reducer; the output end of the worm gear reducer is connected with the rigid chain, the electromagnetic brake is connected with a driving shaft of the rigid chain, the top plate is driven by the rigid chain to move up and down, and the detection device is used for monitoring the height of the top plate. The top plate and the base are each provided with a guide device matched with the shear fork mechanism. The limiting device comprises a mechanical limiting device and an electric limiting device. A dual-mode safety system with worm and gear self-locking and electromagnetic braking is adopted, so that the sickbed can be prevented from falling under extreme working conditions such as power failure, and dual guarantee of dynamic and static safety can be realized; and the safety of equipment and personnel is guaranteed through a triple protection framework of electric limiting and mechanical limiting.

The present disclosure provides systems and methods for automated scan preparation and real-time monitoring / adjustment in medical imaging. The automated scan preparation may include positioning a target subject to be scanned by a medical imaging device, determining a rotation scheme of the medical imaging device, targeting a scan region of the target subject with an imaging isocenter of the medical imaging device, determining target position(s) of component(s) of the medical imaging device, performing a virtual scan, generating a reference subject model representing an internal structure of the target subject, or the like. The real-time monitoring / adjustment operations may include achieving automatic brightness stabilization, monitoring a posture of the target subject, adjusting the position of component(s) of the medical imaging device, estimating a dose distribution, monitoring a treatment of the target subject, performing a motion correction, or the like.

Provided herein is technology relating to medical imaging and radiation therapy and particularly, but not exclusively, to devices, methods, and systems for positioning a patient with respect to a radiation source to image the patient and / or to treat the patient by exposing the patient to a radiation beam produced by the radiation source.

The utility model discloses a bed body foot support of a digital fluoroscopy X-ray machine, which comprises a bottom plate, an examination bed arranged at the top of the bottom plate and a connecting frame arranged at one end of the examination bed, and further comprises a mounting plate arranged at one end of the connecting frame, a sliding opening is formed in the outer wall of the top of the mounting plate, and a sliding block is connected to the inner wall of the sliding opening in a sliding mode. According to the bed body foot support of the digital fluoroscopy X-ray machine, a patient can put two heels on the two foot supporting assemblies respectively, the fixing plate can be driven to ascend by a certain height through the lifting assembly when the legs need to be lifted, then the foot supporting assemblies and the feet of the patient are driven to ascend, the patient is helped to lift the legs, and therefore the patient can conveniently lift the legs. When the foot needs to be rotated to adjust the position of the ankle joint, the foot supporting assembly can be driven to rotate by a certain angle through the adjusting assembly, then the foot of a patient is driven to rotate by a certain angle, the position of the ankle joint is adjusted, the adjusted posture can be stably kept, and the shooting effect is ensured.

The invention discloses a PET / MR head positioning device which comprises a fixing plate, threaded holes are symmetrically formed in the fixing plate, threaded heads are installed in the threaded holes in a threaded mode, connecting studs are fixedly connected to the upper ends of the threaded heads, extrusion nuts are installed on the connecting studs in a threaded mode, and limiting brackets are symmetrically arranged on the fixing plate. The inner sides of the limiting brackets are cambered surfaces, first rubber pads are attached to the cambered surfaces, connecting plates are fixedly connected to the separated faces of the two limiting brackets, side face extrusion frames are symmetrically arranged on the fixing plate, second rubber pads are attached to the opposite faces of the two side face extrusion frames, and connecting plates are fixedly connected to the separated faces of the two side face extrusion frames. Through cooperation of the limiting bracket, the side extrusion frame and the medical fixing band, the position of the head of a patient can be fixed, the whole device is made of a non-metal material, and the problem that in the nuclear magnetic examination process, a high-intensity magnetic field generated by equipment can interact with the device can be effectively solved.

A method for molecular image acquisition includes beginning acquisition of a molecular image via a molecular imaging system, performing one or more analyses of the molecular image during acquisition of the molecular image to determine whether at least one hot spot is present in the image, and if it is determined that it is statistically significant that there is either at least one hot spot present or there is not at least one hot spot present in the image in any one of the one or more analyses of the molecular image, performing at least one of providing a recommendation that the acquisition be stopped or stopping the acquisition automatically.

An x-ray diffractometer may perform 3D-analysis of collagen tissue of a patient (a human or another animal). The diffractometer includes an oblong housing that may be hinged and that contains an x-ray projector on one side of a recess and a receiver on an opposite side of the recess. The recess accommodates analyzed tissue such as the external ear and skin of a patient. The x-ray projector directs an x-ray micro-beam at the patient's tissue, and the receiver contains a movable two-dimensional x-ray detector that detects a transmitted x-ray micro-beam passed through the analyzed tissue and detects x-rays scattered or diffracted by the analyzed tissue.