39results about "Radiation diagnostic techniques" patented technology

The bone measurement system is configured to detect a density of a metallic source within a bone. The bone measurement system includes an x-ray fluorescence (XRF) device, a filter, a radiation detector, a non-transitory computer-readable storage medium storing processor-executable instructions, and a processor. The XRF device may have an x-ray tube including an x-ray source and an anode. The x-ray source may be configured to produce an x-ray beam. The x-ray tube may include a backscatter geometry of around less than one-hundred and eighty degrees to more than ninety degrees. The filter may be disposed along a path of the x-ray beam. The radiation detector may be coupled to the XRF device.

This invention discloses a positioning support device for a mammography machine in radiology, belonging to the field of medical device technology. The positioning support device includes a movable guide rail, a mounting base slidably connected to the movable guide rail, a standing plate rotatably connected to the mounting base, a back plate fixed to one side of the top of the standing plate, two sets of shoulder fixation components symmetrically and slidably connected to the back plate, and an adjustable lumbar support pad slidably connected to the back plate. The shoulder fixation components and the lumbar support pad move up and down synchronously. A seat plate is also movably connected to the back plate, and a hidden groove matching the seat plate is provided on the back plate, located below the shoulder fixation components. This positioning support device allows patients to have their shoulders fixed in a normal standing position for convenient examination, and also allows patients to undergo mammography in a seated position. The seat position is rotatable and movable, and patients can easily get in and out of the seat. Furthermore, this positioning support device also provides effective support for the patient's lower back.

The invention discloses an X-ray emission regulation and control mechanism for three-dimensional reconstruction, a double suspension type DR and a use method, and relates to the technical field of medical imaging equipment, the X-ray emission regulation and control mechanism comprises an X-ray emission mechanism, a control box, a rotating mechanism, a lifting mechanism and a linkage mechanism, the X-ray emission mechanism is used for generating and emitting X-rays; the control box is electrically connected with the X-ray emission mechanism and is used for receiving an external instruction and regulating and controlling emission parameters of the X-rays; the rotating mechanism is used for bearing the X-ray emission mechanism and driving the X-ray emission mechanism to rotate so as to realize multi-angle X-ray emission; the lifting mechanism is used for bearing the control box and driving the control box to lift; the linkage mechanism is in transmission connection with the rotating mechanism and the lifting mechanism, so that when the rotating mechanism drives the X-ray emission mechanism to rotate, the linkage mechanism synchronously drives the lifting mechanism to drive the control box to ascend and descend, the rotating path of the X-ray emission mechanism is avoided, the equipment size is effectively reduced, and the scanning angle range and the imaging quality of three-dimensional reconstruction are improved.

An apparatus (10) for processing dark-field X-ray image data is provided. The apparatus includes a data interface (20) and a data processing unit (30). The data interface (20) is configured to provide dark-field X-ray image data to the data processing unit. The data processing unit (30) is configured to segment the image data to provide segmented image data of the lung, the segmented image data including at least a first lung segment and a second lung segment distinguishable therefrom, the first lung segment and the second lung segment being segmented into defined volumes. The data processing unit (30) is also configured to derive at least a first dark-field signal value assigned to the first lung segment and a second dark-field signal value assigned to the second lung segment from the image data. Furthermore, the data processing unit (30) is configured to derive a quantitative measure by comparing the first dark-field signal value and the second dark-field signal value with each other, the quantitative measure being output data for lung analysis.

The invention discloses a voltage regulation and control X-ray subtraction imaging method, which is characterized in that high-energy and low-energy X-ray photons are absorbed by designing a high-thickness X-ray direct detector. The internal electric field distribution of the detector is adjusted by changing the bias voltage, and part of photon-generated carriers are selectively absorbed. X-rays obtained under different voltages are used for subtraction according to a certain algorithm, different substance attributes in an X-ray image can be judged, and images of substances with different attributes are separately displayed. According to the invention, a set of different energy spectrum X-ray image separation and subtraction algorithm is provided, and the spatial distribution of different density parts of a detected object is obtained by using X-ray transmission images under different bias voltages; and according to the spatial distribution of different densities of the detected object, separating to obtain independent X-ray images of different substance attribute components of the detected object.

The present disclosure provides systems and methods for determining one or more diagnostic indicators using X-ray diffraction (XRD). In some embodiments, the techniques described herein relate to a system including: a fixture configured to position a region of skin of a patient within a measurement region; an X-ray source coupled to the fixture and configured to emit an X-ray beam that overlaps with the measurement region; an X-ray receiver coupled to the fixture, the X-ray receiver including a coordinate-sensitive digital detector of X-rays; and one or more processors coupled to the X-ray receiver. The one or more processors can be configured to collect XRD data from the X-ray receiver, to process the XRD data, and to determine a diagnostic indicator for assessment of a physiological or pathological condition based on the processed XRD data.

Disclosed herein is a radio-afterglow nanoparticle (RANP) comprising ABCD, wherein: A represents a radioabsorber; B represents a radiosensitizer; C represents a luminescent component; and D represents an amphiphilic polymeric matrix. Also disclosed herein are a method for the detection of cancer in vivo, a method of treating cancer, a method of treating cancer in a patient by administering the aforementioned radio-afterglow nanoparticle, uses of the aforementioned radio-afterglow nanoparticle, and a drug comprising the aforementioned radio-afterglow nanoparticle.

Present invention relates to safety features for radiopharmaceutical dispensing system, wherein dispensing system comprises a controller, a source of radiopharmaceutical and other components. The controller is configured to perform automated quality control of the system to ensure that the system complies quality control before radioactive dose dispensing. The quality control comprises scanning the dispensing system, network or connected devices for an unauthorized connection, malware and ensure that system is free of any such cybersecurity threat before dispensing a radioactive dose.

This invention discloses a geometric parameter calibration method for an X-ray imaging system, relating to the field of medical imaging equipment technology. This invention significantly improves the adaptability of portable X-ray equipment in scenarios involving rapid switching between pets of various sizes through an anatomical feature-driven parameter self-calibration mechanism. Utilizing the inherent proportional relationships of mammalian skeletons, such as the ratio of intervertebral space to rib width, geometric parameter calibration is completed in a single exposure, eliminating reliance on traditional physical calibration modules and avoiding proportional distortion of reconstructed images due to size differences. For live respiratory motion, respiratory frequency components are separated in the frequency domain of the projection data, and displacement errors are dynamically corrected through reverse compensation, effectively suppressing motion artifacts without the need for external control equipment. For the edge distortion problem of low-cost detectors, a polynomial distortion model is constructed based on the symmetry of 180° projection, combined with a robust iterative optimization algorithm, to automatically complete calibration during initial power-on or periodic scans.

1. A method for determining one or more of the selection, positioning, or placement of a surgical implant, the method comprising: predicting the function of impaired anatomical structures in their intact state; predicting post-operative function of one or more implant structures; Selecting one or more of an implant, an implant position, or an implant location to improve predicted post-operative function.

This invention relates to a method for providing a calibrated data set, comprising: receiving a preoperative data set having an image and / or model of an examination area of ​​an object; receiving length information, wherein at least a portion of the medical object is positioned intraoperatively in the examination area, wherein the length information has information regarding the length of the portion of the medical object positioned in the examination area; determining first positioning information based on the preoperative data set and the length information, virtually positioning a predefined segment of the portion of the medical object positioned in the examination area; receiving and / or determining second positioning information, actual positioning of the predefined segment; determining a transformation rule for minimizing the deviation between the first and second positioning information; generating a calibrated data set by applying the transformation rule to the preoperative data set; and providing the calibrated data set. The invention also relates to a system and a computer program product.

The invention relates to a dynamic X-ray image matching method and system and a dynamic X-ray camera, and relates to the technical field of dynamic X-ray image matching. The dynamic X-ray image matching method comprises the following steps: determining whether a plurality of dynamic X-ray two-dimensional chest images in the breathing process comprise a set target or not; if yes, a set target X-ray two-dimensional chest image corresponding to the set target is extracted from the multiple dynamic X-ray two-dimensional chest images in the breathing process; matching is carried out on the basis of a lung airflow and blood flow mixed image sequence corresponding to the set target X-ray two-dimensional chest image or a lung airflow and blood flow mixed image and a lung blood flow image sequence corresponding to multiple X-ray two-dimensional chest images at multiple moments in a breath-holding state; and obtaining lung ventilation corresponding to the set target X-ray two-dimensional chest image. According to the embodiment of the invention, dynamic X-ray image matching can be realized, and then lung ventilation is determined.

Amedical X-ray imaging method is provided, including: S10: setting an imaging target region; S20: segmenting the imaging target region into a plurality of segmented regions according to first data, where the first data is a distribution of X-ray absorptivities of body parts of an examinee corresponding to the imaging target region; S30: for each of the segmented regions, generating an X-ray photographing parameter for the segmented region according to an X-ray average absorptivity of a body part of the examinee corresponding to the segmented region and according to a correspondence between X-ray average absorptivities and X-ray photographing parameters; S40: photographing a local X-ray image according to the X-ray photographing parameter corresponding to each of the segmented regions; and S50: splicing the local X-ray images corresponding to the plurality of segmented regions to form a panoramic X-ray image of the imaging target region. The medical X-ray imaging method is conducive to improving uniformity of the panoramic X-ray image. In addition, a medical X-ray imaging device is further provided.

The present invention provides an X-ray imaging apparatus and a position offset detection unit for an X-ray imaging apparatus. The X-ray imaging apparatus includes an X-ray irradiation unit, an X-ray detection unit, a moving mechanism unit that can move while supporting the X-ray irradiation unit, an optical feature point acquisition unit disposed on either the X-ray irradiation unit or the X-ray detection unit and acquiring the position of the feature point by optically detecting the feature point disposed on the other part, a position offset acquisition unit that acquires the position offset between the X-ray irradiation unit and the X-ray detection unit based on the position of the feature point, and a notification unit that provides notification based on the position offset.

The invention relates to an X-ray imaging apparatus. The X-ray imaging apparatus includes: an imaging unit including a generator unit and a sensor unit facing each other across an object to be imaged; and a drive control unit that captures an X-ray image of the subject by rotating the generator unit and the sensor unit in opposite directions about a rotation axis between the generator unit and the sensor unit, the generator unit including: an X-ray generation unit that is controlled by the drive control unit so as to generate X-rays irradiated toward the subject; and a camera unit that, when the generator unit and the sensor unit rotate in the opposite directions, captures a three-dimensional optical image of the subject by being controlled by the drive control unit, the camera unit is arranged inside a guide groove recessed from the outer surface of the generator unit to the inside, and the X-ray generation unit is arranged on one side of the guide groove. According to the X-ray imaging device, the three-dimensional camera is arranged on one side of the X-ray generating part, so that the phenomenon that the camera is degraded due to X-rays can be prevented.

The present disclosure relates to a method, an evaluation device, a computer program and an electronically readable data carrier for evaluating dual-energy computed tomography data sets of an angiogram. The method for evaluating dual-energy computed tomography data sets of an angiogram recorded using a contrast agent comprising iodine, which data sets comprise for each image point an image vector consisting of a first attenuation value assigned to a high energy spectrum and a second attenuation value assigned to a low energy spectrum, has the following steps for determining a quantitative calcium score: presetting a calcium and iodine basis vector in a two-dimensional dual-energy space spanned by the first attenuation value as abscissa and the second attenuation value as ordinate as a basis for basis material decomposition; projecting all image vectors in the dual-energy space that lie below a straight line defined by the calcium basis vector onto the straight line in order to obtain a modified data set; performing a basis material decomposition of the modified data set in order to obtain a calcium image data set; determining a quantitative calcium score from the calcium image data set.

The present invention relates to an apparatus for the detection of opacities in X-ray images. It is described to provide (210) an analysis X-ray image of a region of interest of an analyzed body part. A model of a normal region of interest is provided (220), wherein the model is based on a plurality of X-ray images of the region of interest. At least one abnormality is detected (230) in the region of interest of the analyzed body part, the detection comprising comparing the analysis X-ray image of the region of interest and the model of the normal region of interest. Information is output (240) on the at least one abnormality.

The present invention provides a multi-view exposure X-ray image positioning method and system, wherein the method specifically comprises: acquiring volumetric data information about a target object; shooting X-ray images corresponding to multiple view angles according to a time sequence based on a pre-set time period; and realizing position positioning of single-view-angle images according to a first optimization algorithm; in the case where the target object is in a non-static state, receiving a second image sequence according to the time sequence and performing auxiliary optimization based on different view angle images in a first pre-set time period before and after receiving the second image sequence, so as to realize position and posture optimization in a depth direction of the target object, eliminating an error of tracking and positioning only in one view angle, and realizing accurate positioning of the target object in a dynamic time sequence image.

An X-ray diffraction system includes a fixture 592 to position a region of skin 525 of a patient within a measurement region; an X-ray source 510 coupled to the fixture to emit an X-ray beam that over

A system(s), a computer-implemented method(s) and / or computer executable instructions encoded on a computer readable medium(s) obtains, for a scan series for a subject that includes arms of the subject at different positions relative to the subject, a scout image for the subject, removing the arms of the subject from the scout image, designating the scout image with the arms of the subject removed as a reference image for X-ray source current modulation for the scan series, and utilizes the designated scout image for X-ray source current modulation for the scan series.

The present disclosure provides systems and methods for determining one or more diagnostic indicators using X-ray diffraction (XRD). In some embodiments, the techniques described herein relate to a system including: a fixture configured to position a region of skin of a patient within a measurement region; an X-ray source coupled to the fixture and configured to emit an X-ray beam that overlaps with the measurement region; an X-ray receiver coupled to the fixture, the X-ray receiver including a coordinate-sensitive digital detector of X-rays; and one or more processors coupled to the X-ray receiver. The one or more processors can be configured to collect XRD data from the X-ray receiver, and to process the XRD data. The processor can also be configured to determine a diagnostic indicator comprising a probability score for a likelihood of one or more physiological or pathological conditions, based on the processed X-ray diffraction data.

This invention provides a CT equipment calibration method, apparatus, device, medium, and program product based on energy spectrum shape, relating to the fields of physics and computer science, and particularly to the application of physics and computer technology in the field of radiomedicine. The method includes: constructing an energy spectrum shape function based on X-ray information, wherein the energy spectrum shape function includes free parameters describing the characteristics of the energy spectrum distribution; obtaining measured CT values ​​for various materials based on CT equipment scanning of reference materials, wherein the reference materials include various materials with known densities and elemental mass percentages; determining the free parameters in the energy spectrum shape function based on the measured CT values ​​of the various materials, thereby obtaining the energy spectrum shape information of the CT equipment.

The invention discloses O-shaped ring medical imaging equipment with an external bulb tube and flat panel detector, which relates to the field of medical equipment and comprises a trolley, an O-shaped ring medical imaging device for acquiring images, a control panel and a foot brake for controlling exposure parameters. According to the O-shaped ring medical imaging equipment with the external bulb tube and flat panel detector, a main body is designed to be of an O-shaped ring structure, compared with a C-shaped arm / G-shaped arm X-ray machine in the prior art, the O-shaped ring structure increases the rigidity of a system and reduces deformation in the scanning process, and the equipment not only has an ultra-large aperture and an ultra-narrow rack width, but also has the advantages of being simple in structure and convenient to use. A spacious operation space is provided for medical staff and bedside equipment; omni-directional movement is supported, and movement in an operating room and movement between operating rooms are facilitated. And meanwhile, the system has the functions of 360-degree scanning, 3D scanning, front / back inclined 30-degree scanning of the rack, two-dimensional photography, perspective, three-dimensional cone beam imaging and the like. The functions are more comprehensive, and the clinical application prospect is good.

The invention relates to a controller (106) for dental imaging of an object. The controller comprises: at least one processor (802), and at least one memory (808) including computer program code (814). The at least one memory (808) and the computer program code (814) is configured to, with the at least one processor (802), cause the controller (106) at least to: obtain first image data from an optical scanner unit (104); obtain second image data from a dental X-ray imaging unit (102); produce a first surface model (202) from the obtained first image data, wherein the first surface model (202) represents an optical three-dimensional shape of a surface of a first part of the object; use the first surface model (202) to process the obtained second image data; determine based on the first surface model (202) an anatomic shape of the object; and adjust a reconstruction of a dental X-ray image from the obtained second image data so that a focal trough in the dental X-ray image corresponds to the anatomic shape of the object determined based on the first surface model (202). The invention relates also to an imaging system (100), a method, a computer program (814), and a computer-readable medium for dental imaging of an object.

Proposed is an X-ray imaging apparatus comprising an imaging part comprising a generator part and a sensor part facing each other with an imaging subject positioned therebetween and a driving control part configured to rotate the generator part and the sensor part around a rotation axis positioned between the generator part and the sensor part, thereby radiographing an X-ray image of the imaging subject. The generator part comprises an X-ray generation part configured to generate X-rays emitted toward the imaging subject by being controlled by the driving control part and a camera part configured to photograph a three-dimensional (3D) optical image of the imaging subject by being controlled by the driving control part when the generator part and the sensor part are rotated, wherein the camera part is disposed within a guide groove recessed from an outer surface of the generator part to an inner portion of the generator part and the X-ray generation part is disposed on a first side of the guide groove.

The present application relates to the technical field of image processing, in particular to a spine intelligent recognition method and system based on X-ray, comprising: acquiring multiple frames of X-ray images of each segment of the spine under different postures; determining a complete distance adjustment factor of the interaction of the vertebral body of the surrounding segment on the current segment based on the distance and the included angle between the current segment and the surrounding segment in each frame of X-ray image and the physiological parameters of the current segment; determining a second height change amount of the current segment based on the basic weight of the upper and lower vertebral bodies of the current segment, the spine offset adjustment term and the first height change amount; determining a potential spine injury evaluation value of the current segment according to the second height change amount, the intervertebral disc deformation parameters of the current segment and the surrounding segment and the complete distance adjustment factor, and identifying the abnormal condition of the spine function of the current segment based on the potential spine injury evaluation value. In this way, the present application greatly improves the recognition ability of early occult spine function abnormalities.

The invention discloses an error compensation method of a Z-type scanning system, the Z-type scanning system and equipment. The error compensation method comprises the following steps: acquiring a first direction image acquired by the Z-type scanning system when the Z-type scanning system moves from a current layer of an object to be scanned and a second direction image acquired by the Z-type scanning system when the Z-type scanning system moves from an upper layer of the object to be scanned; calculating an image overlapping area between the first direction image and the second direction image, and determining a first image overlapping area and a second image overlapping area according to the image overlapping area; calculating a reference offset estimation value according to a first projection vector constructed by using the first image overlapping region and a second projection vector constructed by using the second image overlapping region; and selecting an offset prediction quantity in a reference offset range corresponding to the reference offset estimation value, and performing error compensation on the first direction image by using the offset prediction quantity. According to the method, accumulation of displacement errors can be inhibited in real time in the process of scanning the object to be scanned by using the Z-type scanning system.

The present disclosure provides systems and methods for determining one or more diagnostic indicators using X-ray diffraction (XRD). In some embodiments, the techniques described herein relate to a system including: a fixture configured to position a region of skin of a patient within a measurement region; an X-ray source coupled to the fixture and configured to emit an X-ray beam that overlaps with the measurement region; an X-ray receiver coupled to the fixture, the X-ray receiver including a coordinate-sensitive digital detector of X-rays; and one or more processors coupled to the X-ray receiver. The one or more processors can be configured to collect XRD data from the X-ray receiver, to process the XRD data, and to determine a diagnostic indicator for assessment of a physiological or pathological condition based on the processed XRD data.

The application provides a kind of cascade imaging system, comprising: detector module, cascade photon coincidence module and image reconstruction module;The detector module includes two opposite detectors;Two the object to be imaged is accommodated between the detector;The detector is gamma ray position sensitive detector, two the detector has time coincidence function;Without collimator;The detector module is used to realize single photon imaging and the data acquisition of cascade gamma photon coincidence imaging;The cascade photon coincidence module is used to determine cascade coincidence gamma photon pair by time window;The image reconstruction module is electrically connected with the detector module and the cascade photon coincidence module, for completing corresponding image reconstruction based on the data collected by the detector module.The application can simultaneously collect single photon and cascade photon coincidence information, without using collimator, greatly improving the sensitivity of the system, so that the image imaging quality is higher.