155results about "Radiation diagnostic image/data processing" patented technology

The present disclosure relates to a method for imaging and an imaging system. The method includes obtaining a scanning protocol for an examination subject, which includes: obtaining calibration data associated with the scanning protocol in response to a commonly used scanning protocol calibration data set of a medical imaging system including the calibration data; or performing a calibration operation in response to a commonly used scanning protocol calibration data set of a medical imaging system not including calibration data associated with the scanning protocol, to generate calibration data associated with the scanning protocol. The method further includes scanning the examination subject based on the scanning protocol, to obtain raw imaging data, and performing reconstruction using the calibration data associated with the scanning protocol and the raw imaging data, to obtain a medical image of a scanned subject.

A calibration target for use with a radiographic image detector includes a target body securable to the image detector and a plurality of radiopaque linear markers, e.g. wires, fixed to the target body, wherein access to the image detector by incident radiation is at least partially blocked by the plurality of linear markers. By using the geometric properties of wires and advanced detection techniques, a precise calibration suitable for high-quality, volumetric three-dimensional CT reconstruction from biplanar X-ray images is achieved.

Embodiments of the present disclosure may provide a system, a method, and a device for X-ray imaging. The method may include: obtaining a grayscale of a current frame of an object, wherein the current frame is obtained by performing X-ray imaging on the object based on current performing parameters; determining an updated equivalent phantom thickness of the object based on the grayscale of the current frame, the current performing parameters, and a pre-stored correspondence, wherein the pre-stored correspondence reflects dose values corresponding to a plurality of equivalent phantom thicknesses and a plurality of performing parameters; and determining target performing parameters of a next frame of the object based on the updated equivalent phantom thickness, a target grayscale, and the pre-stored correspondence.

The invention provides an imaging method, device and equipment of an interventional instrument. The imaging method comprises the following steps: acquiring a movement track and a current position of the interventional instrument in an interventional environment; according to the motion trail and the current position, a local scanning visual field area of the imaging equipment is determined, and the local scanning visual field area at least comprises an expected advancing path of the interventional instrument; and imaging the interventional instrument according to the local scanning view area to obtain a local image of the interventional instrument. The radiation quantity in the imaging process of the interventional instrument is reduced, and the imaging accuracy is improved.

The present invention relates to the technical field of radiology, in particular to the field of assisting radiologists performing radiological examinations by using artificial intelligence methods. The present invention also relates to the training of a machine learning model and the use of the trained model for predicting a representation for an examination region in one or more states of a sequence of states in a radiological examination.

The present invention relates to a medical image conversion method, and more particularly, to an image conversion method for converting medical images using a generative adversarial network (GAN). According to one embodiment of the present invention, there is provided a medical image conversion method that enables medical staff to perform medical examinations, diagnoses, and treatments with accurate information through conversion between medical images using a learning model that performs machine learning, thereby enabling patients to receive appropriate medical services.

A multi-spectral tomography imaging system includes one or more source devices configured to direct beams of radiation in multiple spectra to a region of interest (ROI), and one or more detectors configured to receive the beams of radiation. The system includes a processor configured to cause movement in at least one of the components such that a first beam of radiation with a first spectrum is directed to the ROI for less than 360 degrees of movement of the ROI. The processor is also configured to process data detected by the one or more detectors, where the data results at least in part from the first beam of radiation with the first spectrum that is directed to the ROI for less than the 360 degrees of movement of the ROI. The processor is further configured to generate an image of the ROI based on the processed data.

The invention relates to a method for medical imaging and a medical imaging system. The method comprises the following steps: acquiring a scanning protocol for an inspection object; aiming at the scanning protocol: responding to calibration data associated with the scanning protocol included in a common scanning protocol calibration data set of the medical imaging system, and obtaining the calibration data; or in response to the fact that the calibration data associated with the scanning protocol is not included in the common scanning protocol calibration data set of the medical imaging system, performing calibration operation to generate the calibration data associated with the scanning protocol; scanning the examination object based on a scanning protocol to obtain original imaging data; and using calibration data associated with the scanning protocol and the original imaging data for reconstruction to obtain a medical image of the scanned object.

The application provides a femoral head necrosis staging judgment method, system, device and storage medium, comprising: acquiring femoral head necrosis X-ray images, using a target detection model to identify all femoral head necrosis X-ray images to obtain an identification confidence; using a target segmentation model to segment the femoral head necrosis X-ray images respectively to obtain a plurality of segmentation regions, and giving each segmentation region a region label; dividing the femoral head necrosis X-ray images into a plurality of regions of interest, giving all regions of interest corresponding region labels according to the positions of the regions of interest; calculating the segmentation confidence of each region of interest according to the region labels, and calculating the probability of the femoral head necrosis X-ray images in each stage according to the segmentation confidence and the identification confidence, and selecting the stage with the maximum probability as the femoral head necrosis stage. The application solves the problem of low staging accuracy caused by manual femoral head necrosis staging in the prior art.

The application provides a magnetocardiogram registration system and method based on optical scanning, and the system comprises a bed body registration module and a CT image registration module. The bed body registration module comprises a first arc-shaped marker and an L-shaped base, and the CT image registration module comprises a second arc-shaped marker which is consistent in shape with the first arc-shaped marker of the bed body registration module. Both the bed body registration module and the CT image registration module are made of non-magnetic photosensitive resin material. Before magnetocardiogram (MCG) acquisition, the two registration modules are digitized by using a handheld optical scanner. According to the bed body registration module, the sensor array coordinate system and the human body coordinate system are aligned. When CT scanning is performed, the image structure of the trunk part of a subject is obtained. According to the CT image registration module, the human body coordinate system and the CT coordinate system are aligned. Correspondingly, the application also provides a registration method corresponding to the system, which significantly improves the efficiency and accuracy of the MCG registration process and promotes the subsequent medical research and application of MCG.

To provide a data processing method for static computed tomography scanning and a device.SOLUTION: The data processing method for static computed tomography scanning includes: performing, in response to receiving a beam synchronization pulse signal, a time synchronization on N angle pulse signals and a time synchronization on N belt pulse signals by using the beam synchronization pulse signal, so as to obtain N synchronization angle pulse signals and N synchronization belt pulse signals, respectively (operation S210); generating N timestamps based on the N synchronization angle pulse signals and the N synchronization belt pulse signals, where the N timestamps correspond to N scanning imaging systems of a static computed tomography scanning device, respectively, and each of the N timestamps includes angle data and belt data (operation S220); and packaging beam data, detection data, the angle data, and the belt data corresponding to each of the N scanning imaging systems to obtain N data packets (operation S230).SELECTED DRAWING: Figure 2

An X-ray diagnostic apparatus according to the embodiment includes an X-ray tube, an X-ray diaphragm assembly, an X-ray detector, and processing circuitry. The X-ray diaphragm assembly includes an X-ray diaphragm defining an irradiation field of X-rays emitted from the X-ray tube and has a characteristic object. The X-ray detector is configured to detect the X-rays emitted from the X-ray tube and passed through a subject. The processing circuitry is configured to calculate information indicating a relative positional relationship between the X-ray tube and the X-ray detector based on an image of the characteristic object depicted in an X-ray image being based on transmission data acquired by the X-ray detector.

A radiation imaging apparatus includes an image obtaining unit configured to obtain image data corresponding to incident radiation, and an image processing unit configured to perform a first bone density measurement based on image data obtained by the image obtaining unit with a first exposure field, and perform a second bone density measurement based on image data obtained by the image obtaining unit with a second exposure field narrower than the first exposure field.

The present invention provides an image inspection apparatus, a control console, and a radiographic imaging system that reduces the workload of an image inspection process by automatically and accurately overlaying marks indicating the photographic direction and / or laterality of a subject onto a radiographic image. The image inspection apparatus (10) includes: a radiographic image acquisition unit (11) for acquiring a radiographic image (16) of a subject photographed using radiation; a photographic condition recognition unit (13) for recognizing photographic conditions related to the photographic direction and / or laterality of the subject illuminated in the radiographic image (16); and a mark overlay unit (14) for overlaying marks indicating the photographic direction and / or laterality of the subject illuminated in the radiographic image (16) onto the radiographic image (16) using the recognition result of the photographic condition recognition unit (13).

The application relates to the technical field of image processing, and provides a tooth detection method and device, a terminal device and a readable storage medium, the method comprising the following steps: acquiring a CT image of a patient's oral cavity and preprocessing the CT image to obtain a three-dimensional tooth region image; performing post-processing by using a tooth detection model to obtain a tooth detection result of the patient; wherein the tooth detection model comprises a full-tooth segmenter, a tooth crown and root segmenter and a tooth crown classifier; when the post-processing is performed, the three-dimensional tooth region image is input into the full-tooth segmenter to obtain a full-tooth segmentation result; the full-tooth segmentation result and the CT image are input into the tooth crown and root segmenter to obtain a tooth crown and root segmentation result; and then the tooth crown and root segmentation result and the CT image are input into the tooth crown classifier to obtain a tooth crown classification result. The method can accurately obtain tooth segmentation information and missing tooth position information of the patient, and has high calculation speed.

The disclosure relates to a system and method for correcting PET image data. PET image data of a first part of a subject may be obtained. CT image data of a second part of the subject may be obtained. The first part may include the second part. PET voxel data of the first part may be obtained based on the PET image data of the first part. A relationship between the CT image data and PET voxel data of the second part may be determined. CT image data of a third part of the subject may be determined based on the relationship and PET voxel data of the third part. The first part may include the third part. An attenuation map may be determined based on the CT image data of the second part and the third part. The PET image data of the first part may be corrected based on the attenuation map.

The invention relates to the technical field of auxiliary diagnosis and treatment systems, in particular to an auxiliary diagnosis and treatment system for oral treatment. Comprising an oral cavity data acquisition module, a data preprocessing module, an oral cavity three-dimensional model construction module, an oral cavity tissue health condition quantitative analysis module, an occlusion function evaluation and anomaly recognition module, a preliminary auxiliary diagnosis and treatment scheme making module, an auxiliary diagnosis and treatment scheme simulation module and an auxiliary diagnosis and treatment scheme optimization and adjustment module. According to the method, data such as teeth, periodontium and occlusion relation in the oral cavity of the patient can be comprehensively and accurately obtained through multi-dimensional oral cavity data collection in combination with a data integrity check formula, the problem that in the prior art, the data collection dimension is single and incomplete is solved, and high-quality basic data is provided for subsequent diagnosis and treatment.

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.

Described herein is software and computer implemented methods for modeling a heart of an individual where the model presents or displays one or more cardiac parameters of the individual. In some embodiments, a model of the heart generated by the software and computer implemented methods described herein is a three-dimensional representation of the heart of an individual that is displayable on a display of a computing device.

The present disclosure relates to an X-ray fluoroscopy image generation method and device, and an X-ray fluoroscopy system. The generation method comprises determining a target line-of-sight vector for a target organ according to an observation requirement and a target position of the target organ of a biological subject to be detected; determining a primary rotation angle and a secondary rotation angle of an imaging arm in an X-ray fluoroscopy device and determining a primary rotation matrix and a secondary rotation matrix based on the target line-of-sight vector; determining a target projection matrix that conforms to a target projection geometry based on the primary rotation matrix and the secondary rotation matrix; and performing volume rendering based on the target projection matrix and pre-acquired three-dimensional computed tomography (CT) data of the target organ to obtain a two-dimensional target X-ray fluoroscopy image under a target observation view angle. The X-ray fluoroscopy image generation method and device and the X-ray fluoroscopy system of the present disclosure can freely generate an X-ray fluoroscopy image under a desired observation view angle based on pre-acquired three-dimensional CT data.

The present application relates to the technical field of prosthesis mechanics analysis, in particular to a kind of talus prosthesis stability and stress distribution biomechanics analysis system, by three-dimensional modeling module, finite element analysis module, stability analysis module and report generation module composition;Three-dimensional modeling module processes CT data by reverse engineering technology;The three-dimensional model of talus prosthesis is constructed;Finite element analysis module is used to simulate the stress condition of talus prosthesis in different positions and different thickness cartilage cover;Stability analysis module is used to analyze the stress distribution of talus prosthesis in different positions by finite element calculation after ligament is successively cut off;Report generation module is used to generate stress distribution nephogram, and the stress distribution of talus prosthesis surface is shown.The present application establishes the model of talus prosthesis, predicts stress distribution and identifies potential failure point or excessive wear based on finite element analysis, to guide design improvement and material selection.

The present invention relates to the technical field of radiology, in particular to supporting radiologists in radiological examinations using artificial intelligence methods. The present invention relates to training a machine learning model and using the trained model to predict representations of an examination area in one or more states of a sequence of states during a radiological examination.

To provide a radiation image processing device which easily and quickly generates a subtraction processing image adjusted after quantifying the image quality, an operation method of the same, and a radiation image processing program.SOLUTION: A radiation image processing device 10 generates a first emphasis image by performing first emphasis processing to two mutually different radiation images obtained by imaging a specific object Obj, generates a second emphasis image by performing second emphasis processing using at least one of the two radiation images, and generates correlation information between the first emphasis image and the second emphasis image. The device displays the first emphasis image, a level value corresponding a value of a first parameter and an image quality index in which a difference between the first emphasis image and the second emphasis image is quantified, and receives a change of the level value.SELECTED DRAWING: Figure 9

The application relates to an image generation method, device and equipment and a storage medium. The application comprises the following steps: obtaining a tissue-to-blood concentration ratio corresponding to each scanning time within a first scanning time length; and generating a target tissue uptake rate image of a scanning object according to the tissue-to-blood concentration ratio and a preset mapping relationship. Since the mapping relationship represents the relationship among the scanning time, a blood activity value corresponding to the scanning time and an accumulated blood activity value corresponding to the scanning time, the accumulated blood activity value within a scanning time period corresponding to the scanning time is obtained based on the mapping relationship, so that the target tissue uptake rate image is obtained based on the accumulated blood activity value, the blood activity value and the tissue-to-blood concentration ratio, and long-time continuous scanning of the scanning object is not required.

The invention relates to providing a complete set of second key elements in an X-ray image, and the invention provides a computer-implemented method for providing a complete set of second key elements in an X-ray image, the method comprising: receiving first input data; applying a first trained function to the first input data (with a computing unit), wherein first output data is generated, and a first collimation region is determined based on first key elements; receiving second input data; applying a second trained function to the second input data, wherein second output data is generated; checking completeness of the set of second key elements in case the set of second key elements is not complete; receiving third input data; applying a third trained function to the third input data, wherein third output data is generated; providing a final output data comprising the complete set of second key elements.

A radiographic imaging apparatus of the present disclosure includes an image outputter outputting a first radiographic image included in continuous radiographic images obtained by radiographic imaging of a subject, an image brightness information extractor obtaining brightness information from the first radiographic image, a first irradiation condition calculator determining a first irradiation condition based on the brightness information, an irradiation controller controlling a radiation dose based on the first irradiation condition, a second irradiation condition calculator determining a second irradiation condition based on a second radiographic image generated based on the first irradiation condition when an imaging site of the subject is fixed, and a dose reducer reducing or maintaining the radiation dose based on the second irradiation condition.

To provide a method for objectively determining whether or not an analysis result of a dynamic state image can be used for diagnosis.SOLUTION: A diagnostic console 3 acquires a dynamic state image obtained by dynamic state photographing using radiation from a photographing apparatus 1; calculates a feature amount related to dynamic state analysis from the dynamic state image; and, on the basis of the feature amount, performs propriety determination of whether dynamic state analysis for the dynamic state image is appropriate or inappropriate for diagnosis.SELECTED DRAWING: Figure 1

The invention relates to a method for providing a corrected data set, comprising: receiving a preoperative data set having an image and / or a model of an examination region of an examination object, wherein intraoperatively: a first part of a medical object is arranged in the examination region and a second part of the medical object is arranged outside the examination object; receiving positioning information about a spatial positioning of the second part of the medical object; determining an entry angle of the medical object into the examination object from the positioning information; receiving an intraoperative data set having an image of the examination region; determining a transformation rule based on the entry angle of the medical object to minimize a deviation between the preoperative data set and the intraoperative data set; generating a corrected data set by applying the transformation rule to the preoperative data set; providing the corrected data set. The invention also relates to a system for providing a corrected data set and to a computer program product.

The invention provides an X-ray fluoroscopic imaging apparatus and an image processing method. The present invention addresses the problem of making it possible to reduce the amount of X-ray radiation by increasing the ratio of an interpolated image when the accuracy or real-time performance of a perspective image is not required, and to maintain a display frame rate equivalent to when the accuracy or real-time performance of the perspective image is required. The X-ray fluoroscopic imaging device can change the irradiation rate according to the operation of an operator. The X-ray fluoroscopic imaging device displays a fluoroscopic image generated at an irradiation rate on an image display device when the irradiation rate is equal to or greater than a reference rate, and generates an interpolated frame so that the display rate becomes equal to the reference rate when the irradiation rate is lower than the reference rate. And displaying the perspective image generated at the irradiation rate and the interpolated frame on an image display device.

This invention provides a coronary CTA calcified plaque detection system, method, device, and medium based on a phantom, relating to the field of applied medical technology. In this embodiment, after adjusting the CT equipment, at least one CTA image of all plaque phantoms can be acquired. After acquiring the patient's coronary CTA, the area adjacent to the plaque location is analyzed by computer. The analysis results are then matched with the phantom image analysis results using the same algorithm and designed indicators to select the phantom that best simulates the plaque situation in the current CTA. This phantom information is used to assist in reconstructing the true condition of the plaque on the CTA. Therefore, this embodiment of the invention can use plaque phantoms to match CTA to assist in reconstructing the true size of coronary plaques on CTA, increasing the reliability of non-invasive coronary CTA in plaque analysis.