73results about "Radiation diagnostic techniques" patented technology

An X-ray imaging apparatus is provided with an X-ray irradiation unit, an X-ray detection unit, a moving mechanism unit movable in a state of supporting the X-ray irradiation unit, an optical feature point acquisition unit, and a notification unit. The optical feature point acquisition unit is provided on either one of the X-ray irradiation unit and the X-ray detection unit and is configured to optically detect a feature point provided on the other of the X-ray irradiation unit and the X-ray detection unit to acquire the position of the feature point. The positional deviation acquisition unit acquires the positional deviation of the relative position between the X-ray irradiation unit and the X-ray detection unit based on the position of the feature point. The notification unit performs a notification based on the positional deviation.

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.

The application provides a metabolic abnormality detection method and device based on cross-modal generation, a terminal, a medium and a program product. The method comprises the following steps: based on the obtained head real 18F-FDG positron emission tomography image of a subject, a trained explicit cross-modal image conversion model is used to reconstruct a pseudo-normal 18F-FDG positron emission tomography image of the subject; according to the head real 18F-FDG positron emission tomography image and the reconstructed pseudo-normal 18F-FDG positron emission tomography image, a residual image is obtained by calculating the intensity difference between the two; and based on the residual image, a metabolic abnormality of the subject is detected by using a set abnormality evaluation index. The application uses the trained explicit cross-modal image conversion model to process the head 18F-FDG positron emission tomography image in three-dimensional space, obtains a residual image, and directly shows the metabolic abnormality mode of the brain of the subject, thereby assisting doctors to carry out efficient and accurate diagnosis work.

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; and use the first surface model (202) to process the obtained second image data. 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.

The invention provides an energy spectrum CT-based intelligent diagnosis system for calculus nephropyosis. The system comprises a data acquisition module, a feature extraction module, an intelligent identification module, a decision support module and a user interaction module, the data acquisition module is used for acquiring energy spectrum CT data of a patient; the feature extraction module is used for extracting kidney pyosis related features based on the energy spectrum CT data of the patient; the intelligent recognition module is used for recognizing the pyonephritis condition of the kidney area of the patient in combination with the relevant characteristics of pyonephritis and generating a thermodynamic diagram for representation; the decision support module is used for providing diagnosis decision support in combination with thermodynamic diagram feedback; the user interaction module is used for completing interaction between a user and the system; according to the method, the energy spectrum CT multi-dimensional features are fused and intelligent analysis is carried out, so that early recognition and visual positioning of calculus nephropyosis are realized, and the diagnosis accuracy and the clinical decision-making efficiency 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.

An X-ray diagnostic apparatus according to an embodiment includes an X-ray tube, an X-ray detector, image generating circuitry, and processing circuitry. The X-ray tube emits X-rays. The X-ray detector detects X-rays emitted from the X-ray tube and transmitted through a subject. The processing circuitry receives a designating operation related a display mode for a target that is at least one of a region of the subject and an object inserted in the subject. In response to the designating operation, the processing circuitry changes the display mode of the target in an X-ray projection image that is based on a detection result of the X-ray detector, the display mode being changed based on three-dimensional medical image data related to the subject.

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 invention is entitled "C-arm imaging system and method". The invention discloses a system for imaging an object, comprising: an X-ray source operative to transmit X-rays through the object; and a detector to receive X-ray energy of the X-rays after passing through the object and generate corresponding object X-ray intensity. The system further comprises: a controller to measure a detector entrance dose without the object placed in the X-ray beam path and determine a relationship between X-ray tube electrical parameters and the detector entrance dose. The controller further determines a relationship between the X-ray tube electrical parameters, the detector entrance dose and the detector average pixel intensity and obtains a normalized air map as a function of the X-ray tube electrical parameters based on calibration image data. The controller also generates an air map based on the normalized air map, the detector entrance dose and the detector average pixel intensity and reconstructs an image of the object based on the air map and the measured object X-ray intensity.

The invention provides a CT equipment calibration method and device based on an energy spectrum shape, equipment, a medium and a program product, and relates to the field of physics and computers, in particular to application of physics and computer technologies in the field of radiation medical treatment. The method comprises the steps that an energy spectrum shape function is constructed based on ray information, and the energy spectrum shape function comprises free parameters used for describing energy spectrum distribution characteristics; a reference material is scanned on the basis of CT equipment, respective actual measurement CT values of the multiple materials are obtained, and the reference material comprises multiple materials with known densities and element mass ratios; and determining free parameters in the energy spectrum shape function based on the actual measurement CT values of the various materials to obtain energy spectrum shape information of the CT equipment.

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.

The present disclosure provides systems and methods for create a scanning pencil beam of x-rays and the air cooling of the system. The system has an enclosure with an x-ray beam source disposed therein. An x-ray wheel having or holding an x-ray attenuating ring is disposed proximate to an end of the enclosure and is configured and disposed to rotate the x-ray attenuating ring and form a scanning pencil beam. The system has at least one air inlet and air outlet and at least one air moving device configured and disposed to move air through the air inlet and the air outlet and to air cool the x-ray system.

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 embodiment of the present specification provides an imaging method and system, the method comprising: acquiring a first image of an object to be imaged by a photographic device; acquiring a second image of the object to be imaged by an X-ray imaging assembly; determining a thickness of the object to be imaged based on the first image; the ray source emits a ray for electron computed tomography imaging; determining a first distance from a reference point of the object to be imaged to the ray source based on the thickness; determining a correction factor based on the first distance, the correction factor being used to reflect the size corresponding to each pixel point on the second image.

A gamma camera and imaging method are disclosed. The gamma camera comprises a detection module comprising a multi-layered detection structure, each layer comprising multiple detection units, each configured to receive incident gamma photons and generate projections of the gamma photons. An image reconstruction module, adapted to different imaging requirements, selects portions of the projections for reconstruction, generating a three-dimensional distribution map of gamma photons that meets these requirements. After completing a single scan, the gamma camera can selectively acquire projections with higher spatial resolution, higher sensitivity, and / or different fields of view, thereby simultaneously meeting the requirements for different imaging indicators as much as possible, reducing operation time and steps.

The invention discloses a geometric parameter calibration method for an X-ray imaging system, relates to the technical field of medical imaging equipment, and remarkably improves the adaptability of portable X-ray equipment in a multi-body pet rapid switching scene through a parameter self-correction mechanism driven by anatomical features. Geometric parameter calibration is completed through single exposure by using an inherent proportional relation of mammalian bones, such as a ratio of a spinal gap to a rib width, so that dependence of a traditional physical calibration module is eliminated, and proportional distortion of a reconstructed image caused by body type difference is avoided; for living body breathing motion, breathing frequency band components are separated in a projection data frequency domain, displacement errors are dynamically corrected through reverse compensation, and motion artifacts can be effectively restrained without external door control equipment; for the edge distortion problem of a low-cost detector, a polynomial distortion model is constructed based on positive and negative 180-degree projection symmetry, and calibration is automatically completed in first startup or regular scanning in combination with a robust iterative optimization algorithm.

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.

The invention provides a minimally invasive puncture anchoring assembly and a pulmonary nodule puncture positioning system.The minimally invasive puncture anchoring assembly comprises a body part and a tail line fixedly connected to the tail end of the body part, and the tail line is used for body surface marking and positioning; the body part comprises a positioning body and an anchoring body, and the positioning body is of a strip-shaped structure made of a metal material and is used for being placed near a pulmonary nodule through CT guidance in the pulmonary nodule minimally invasive surgery so as to develop under CT scanning and indicate the relative position of the pulmonary nodule in the lung; the anchoring body is made of a polyurethane-polycaprolactone polymer composite material, so that the anchoring body has good biocompatibility and absorbability; the anchoring body is coaxially and fixedly arranged on the positioning body and is of a spindle-shaped structure in a free state. The anchoring body is arranged by virtue of polyurethane-polycaprolactone sponge, so that the anchoring body has the integrated characteristics of firm adhesion, rapid hemostasis, controllable degradation and the like, and is used for assisting an operator in stably anchoring and accurately positioning pulmonary nodules in a minimally invasive surgery, and the operation safety is guaranteed.