Abstract: The invention relates to a system and a method for assisting in attenuation correction of gated PET data of a moving object (2). In the system, an evaluation unit (15) is configured to (i) receive a CT image of the object (2) and to segment the CT image into a plurality of CT sub-images, each CT sub-image correspond to an axial segment of an imaged volume, (ii) to determine for each CT sub-image a gate including PET data having a greatest correspondence with the CT sub-image, (iii) to construct, for each CT sub-image, a PET sub-image from the PET data included in the gate determined for the CT sub-image, the PET sub-image substantially corresponding to the same axial segment of the imaged volume as the CT sub-image, and (iv) to combine the PET sub-images to form a PET reference image of the object (2).

Abstract: When generating a tomographic image using a measuring X-ray CT apparatus that is configured to emit X-rays while rotating a specimen that is arranged on a rotary table and reconstruct a projection image thereof to generate a tomographic image of the specimen, an amount of geometric error that is included in the projection image is obtained in advance and stored; the projection image is corrected using the stored amount of geometric error; and a tomographic image is reconstructed using the corrected projection image.

Abstract: An X-ray CT imaging apparatus includes: a supporter that is supported such that an X-ray generator and an X-ray detector are opposed to each other; a turning motor that turns the supporter about a shaft; a crosswise drive motor that moves the shaft in a crosswise direction; and a circuit that performs processing of controlling the turning motor and the crosswise drive motor and processing of setting the physique of a subject. When X-ray CT imaging is performed, the crosswise drive motor moves the shaft in synchronization with turning of the supporter about the shaft, and the supporter is caused to perform combined motion, which allows the X-ray generator and the X-ray detector to turn about a center of an X-ray CT imaging region, and position control of the shaft is performed according to the size of the physique of the subject.

Abstract: A tomographic imaging system receives measurements at a set of frequencies of a wavefield scattered by an internal structure of an object, recursively reconstructs an image of the internal structure of the object until a termination condition is met, and renders the reconstructed image. For a current iteration, the system adds a frequency to a previous set of frequencies used during a previous iteration to produce a current set of frequencies, such that the added frequency is higher than any frequency in the previous set of frequencies, and reconstructs a current image of the internal structure of the object that minimizes a difference between a portion of the scattered wavefield measured at the current set of frequencies and a wavefield synthetized from the current image. A previous image determined during the previous iteration initializes the reconstruction of the current image.

Abstract: A radiographic image processing device includes a radiographic image acquisition unit that acquires a radiographic image taken from a subject using radiation, a region discrimination unit that discriminates a plurality of regions using the radiographic image, a scattered radiation component-estimation section that estimates scattered radiation components of the radiation of each region using scattered radiation component-estimation processing varying for each region, a scattered radiation component-subtraction section that subtracts the scattered radiation components of each region, and an image processing unit that generates a scattered radiation component-subtracted image where the scattered radiation components have been subtracted by sequentially estimating and subtracting the scattered radiation components of each region using the scattered radiation component-estimation section and the scattered radiation component-subtraction section.

Abstract: Example implementations described herein are directed to simulation of devices to be installed in a facility through a high resolution 3D model. A high resolution capture device is utilized to capture 3D images of a facility to generate a 3D model from which devices can be located in freespace within the 3D model and simulated to provide simulated perspective views of facility from the perspective of the device.

Abstract: Aspects of the disclosure are directed to an analysis of a material of a component. A radiation source is activated to transmit radiation to the component. A beam pattern is obtained based on the component interfering with the radiation. The beam pattern is compared to a reference beam pattern. An anomaly is detected to exist in the material when the comparison indicates a deviation between the beam pattern and the reference beam pattern.

Abstract: An apparatus configured to generate an output quality error estimate using a machine-learning error estimation model to compare an output meeting a predetermined quality threshold with an output image reconstructed from a plurality of images, and provide the output quality error estimate for use in estimating if a second subsequent image is required, in addition to a first subsequent image to obtain a cumulative output having an output quality error meeting a predetermined error threshold. Also an apparatus configured, using a received output quality error estimate generated using a machine-learning error estimation model as above, to estimate if a second subsequent image is required, in addition to a first subsequent image, to obtain a cumulative output having an output quality error meeting a predetermined error threshold.

Abstract: An optical imaging apparatus for diagnosis generates a closed curve which precisely reproduces the shape of the indwelled stent and the shape of the inner wall of the biological tissue at the indwelling position of the stent. The optical imaging apparatus analyzes intensity change in transmission direction of the light from the transmission and reception unit for every one of the respective line data; based on the result of the analysis detects pixel data expressing the stent position in the transmission direction; labels each pixel data expressing the detected stent position; eliminates, within the respective labeling groups applied with the same labels, labeling groups in each of which the number of pixel data in the circumferential direction is a predetermined value or less; calculates center position for each labeling group not eliminated; and generates a stent closed-curve using the center position of each labeling group.

Abstract: This X-ray phase image capturing system (100) includes an X-ray source (1), a plurality of gratings, and a detector (4), a moving mechanism (8), and an image processing unit (5). The image processing unit (5) is configured to generate a phase-contrast image (15) based on a plurality of feature quantities (12) and feature quantities 14 extracted from a plurality of X-ray image sets (R) acquired by performing fringe scanning a plurality of times in a short time.

Abstract: Among other things, one or more techniques and/or systems are described for creating virtual channels in an imaging modality. The imaging modality comprises a plurality of charge integrating channels. Information yielded from two or more charge integrating channels during a same or similar acquisition view may be combined to yield a virtual channel that represents a portion of the detection surface substantially equivalent to an area comprised by the two or more charge integrating channels. In one embodiment, within a same acquisition view, some virtual channels may comprise a different number of charge integrating channels than other virtual channels. Also, different sets of virtual channels may be created for a same acquisition view to produce different images from a single set of data, for example, where there may be overlap between virtual channels such that the same charge integrating channel is comprised in more than one virtual channel.

Abstract: Methods and systems are provided for generating a diagnostic cardiac image using a CT system without ECG gating techniques. In one example, a method for an imaging system includes determining a scanning duration for scanning a heart of a patient with the imaging system based on a heart rate of the patient, scanning the patient with the imaging system for the scanning duration, the scanning commenced independent of a current phase of a cardiac cycle of the heart of the patient, and reconstructing an image from data acquired during the scanning.

Abstract: Embodiments disclosed herein relate to systems and methods for segmenting 2D images. Certain embodiments provide a method of segmenting a 2D image. The method includes obtaining a 2D mask for the 2D image, wherein the 2D mask comprises a portion of the 2D image. The method includes selecting one or more first voxels of the 2D image not part of the 2D mask and adding the one or more first voxels of the 2D image to the 2D mask. The method includes selecting one or more second voxels of the 2D image and performing a morphological closing on one or more third voxels comprising the one or more second voxels of the 2D image that are part of the 2D mask. The method includes performing an automatic flood-fill operation on at least a portion of the 2D mask.

Abstract: The image reconstruction processing method estimates, in a substance information estimation process, substance information from a reconstructed image for every image update in an image update process, and uses the estimated substance information to update images based on succeeding calculations by successive approximation formulae of a successive approximation method. Since the substance information is estimated, the present methodology can be applied regardless of whether the constituent substance of an imaging sample is known. Further, because the substance information is estimated (updated) from the reconstructed image for every image update in the image update process, reliable substance information can be estimated by avoiding the problem of continuously using the substance information estimated at a point of time where a repeat count (iteration count) by successive approximation formulae is low and at a point of time where the repeat count is high.

Abstract: The present invention provides an image reconstruction apparatus and an image reconstruction method, both of which achieve reduction in a granular noise and a streak-like artifact both contained in a reconstruction image, and a clear structure boundary as well. The image reconstruction apparatus configured to generate a reconstruction image includes a noise reduction section that generates a streak reduction image as an image obtained by reducing a streak-like artifact in the reconstruction image, a noise reduction ratio acquisition section that acquires a first noise reduction ratio as a noise reduction ratio to be used for reducing a granular noise while retaining a structure boundary in the reconstruction image, and a second noise reduction ratio as a noise reduction ratio to be used for generating the streak reduction image, and an image addition section that adds an addition image to be generated based on the first noise reduction ratio and the second noise reduction ratio to the streak reduction image.

Abstract: A radiation system is provided. The radiation system may include a bore accommodating an object, a rotary ring, a first radiation source and a second radiation source mounted on the rotary ring and a processor. The first radiation source may be configured to emit a first cone beam toward a first region of the object. The second radiation source may be configured to emit a second beam toward a second region of the object, the second region including at least a part of the first region. The processor may be configured to obtain a treatment plan of the object, the treatment plan including parameters associated with radiation segments. The processor may be further configured to control an emission of the first cone beam and/or the second beam based on the parameters associated with the radiation segments to perform a treatment and a 3-D imaging simultaneously.

Abstract: A method may include obtaining scan data that is captured by scanning a heart of a subject with the imaging device. The method may include obtaining electrocardiogram (ECG) data during the scans of the heart of the subject. The method may include determining first scan data from the scan data. The method may include reconstructing the cardiac image based on the first scan data. The method may also include performing one or more iterations. Each of the one or more iterations may include determining whether there is a pulsatile artifact in the reconstructed cardiac image, determining a second time period of at least one cardiac cycle based on the pulsatile artifact, and reconstructing the cardiac image based on the scan data and the second time period.

Abstract: A hardness deriving device includes: an acquisition section configured to acquire plural ultrasound images obtained by ultrasound imaging a breast in a state in which the breast is pressed by a pressing member at a plurality of different pressures; and a deriving section configured to find an amount of change at corresponding points between the plural ultrasound images acquired by the acquisition section, and to derive information indicating a hardness of tissue of the breast based on the amount of change at the corresponding points.

Abstract: Included are an inspection unit that outputs a detection signal corresponding to type and size of a foreign matter contained in an inspection object or a detection signal corresponding to weight of the inspection object, a determination unit that performs a pass/fail determination as to the inspection object, based on the detection signal from the inspection unit, an inspection record information accumulation unit that accumulates inspection record information including inspection date and time and inspection data, and a control unit that displays on a display operation unit, a list of inspection data of an inspection object having a defective inspection result from the inspection record information, and if one inspection object is selected from the inspection objects displayed as the list by an operation on the display operation unit, displays on the display operation unit, the inspection data in a predetermined range with reference to the selected inspection object.

Abstract: An apparatus has an upright gantry. A tube arm assembly and a compression arm assembly are rotatably coupled to the gantry. The tube arm assembly independently rotates relative to the compression arm assembly. A controller disposed on the gantry is operably connected to at least one of the tube arm assembly and the compression arm assembly.

Abstract: Arrangement to reduce a time until a first image is displayed, to reduce a standby time until the next imaging is started, and to uniformize a time interval in a case where a plurality of images are displayed. An X-ray CT device detects a dose of an X-ray, a storage unit that preserves image data, a calculation unit that generates, as the image data, projection data on the basis of the X-ray data in parallel to an imaging process in the scanner, preserves the projection data, notifies a display control unit of preservation information, performs a reconstruction process, a display unit that displays an image generated per the X-ray data, and the display control unit that controls a display timing of a reconstructed image to be displayed on the display unit on the basis of the preservation information and the reconstruction information.

Abstract: An image is generated where an edge of a structure in a subject is sharpened with reducing streak artifacts, within a short amount of time. X-rays at multiple angles are applied to the subject placed in imaging space, and a distribution of X-rays strength passing through the subject is detected to obtain raw data associated with multiple views. After smoothing the raw data associated with multiple views, image reconstruction is performed to generate a smoothed image of a predetermined region to be imaged in the imaging space. In the smoothed image, more intense sharpening process is applied to pixels in a region of a central part of the subject, than the pixels in a region of a peripheral part of the subject.

Abstract: A method of operating a mobile fluoroscopic imaging system includes positioning an x-ray source and a DR detector about a patient. Data defining a spatial configuration of the x-ray source and the collimator is stored in the system. The system is configured to determine a source-to-image distance of the x-ray source and the DR detector including by activating the x-ray source and capturing a scout image in the DR detector. Dimensions of the scout image are calculated and the source-to-image distance is determined based on the data defining the spatial configuration of the x-ray source and the collimator and on the dimensions of the scout image.

Abstract: With the aim of providing a radiation imaging apparatus and a calibration method for photon counting detectors, being able to discriminate between soft and adipose tissues with high accuracy, there is disclosed a radiation imaging apparatus equipped with photon counting detectors which output an electric signal corresponding to photon energy which is energy of radiation photons incident thereon, the radiation imaging apparatus including a storage unit which stores relationships between linear attenuation coefficients and the photon energy with regard to multiple materials; a calculation unit which calculates normalized attenuation coefficients which are linear attenuation coefficients normalized by dividing linear attenuation coefficients per unit of photon energy by a linear attenuation coefficient at given photon energy with respect to each material; and a selection unit which selects basal materials which are used in relation to materials to be discriminated which are intended to be discriminated, based on

Abstract: The invention relates to a subject support device (1) to be used in a projection data acquisition apparatus (2) for acquiring projection data of a subject (3). The subject support device comprises a support component (4) providing a support surface (5) for supporting the subject while acquiring the projection data, a diffraction grating (6) for diffracting x-rays, and a moving unit (7, 8) for moving the support component and the diffraction grating relative to each other. This relative movement can allow for a movement of the support component such that the subject is moved through x-rays (16) for determining projection data of different parts of the subject, while the diffraction grating can still be traversed by the x-rays. These projection data can be used for generating a relatively large phase-contrast and/or dark-field projection image.

Abstract: An embodiment of the invention relates to a method for calculating an image matrix size N for reconstructing image data of an examination subject from projection data. The method includes acquiring projection data obtained during a relative rotational movement between a radiation source of a computed tomography system and the examination subject; calculating the image matrix size N as a function of an extent of an axial field of view of the computed tomography system and a sharpness value in the image data to be reconstructed; and making the calculated image matrix size available to a reconstruction unit to reconstruct the image data from the projection data acquired.

Abstract: A method is provided for producing a high-resolution three-dimensional digital subtraction angiography image of an examination object. The method includes: providing or recording of a data set of a three-dimensional rotational run of an imaging system around the examination object without administration of contrast agent (e.g., mask run); motion compensation of the data set of the mask run by a method based on the epipolar consistency conditions; providing or recording of a data set of a three-dimensional rotational run of the imaging system around the examination object with administration of contrast agent (e.g., fill run); motion compensation of the data set of the fill run by a method based on the epipolar consistency conditions; reconstructing a first volume from the compensated data set of the mask run (e.g., mask volume) and a second volume from the compensated data set of the fill run (e.g.

Abstract: The disclosure relates to a system and method for determining and pre-fetching projection data in image reconstruction. The method may include: determining a sequence of a plurality of pixels including a first pixel and a second pixel relating to the first pixel; determining a first geometry calculation used for at least one processor to access a first set of projection data relating to the first pixel from a first storage; determining a second geometry calculation based on the first geometry calculation; determining a first data template relating to the first pixel and a second data template relating to the second pixel based on the second geometry calculation; and pre-fetching a second set of projection data based on the first data template and the second data template, from a storage.

Abstract: Even a windmill artifact including a high-frequency component in a plane perpendicular to a rotation axis can be reduced and a boundary of an organ can be made to be clear to maintain the contrast. The invention relates to a medical image processing device and includes an image acquiring unit that acquires a 3D volumetric image, a Z high-frequency image generating unit that generates a Z high-frequency image which is a high-frequency component in a rotation axis direction from the 3D volumetric image, an organ component extracting unit that extracts an organ component from the Z high-frequency image, an artifact component extracting unit that extracts an artifact component on the basis of the Z high-frequency image and the organ component, and a corrected image generating unit that generates a corrected image by subtracting the artifact component from the 3D volumetric image.

Abstract: A radiation detection device includes a scintillator, a photodetector for detecting scintillation light from the scintillator and outputting a detection signal, a first comparator for comparing the detection signal with a first threshold voltage V1 and outputting a signal having a first time width T1, a first time width measurement device for measuring the first time width T1, a second comparator for comparing the detection signal with a second threshold voltage V2 and outputting a signal having a second time width T2, a second time width measurement device for measuring the second time width T2, and an analysis unit for obtaining a time constant ? indicating a time waveform of the detection signal based on the first and second time widths T1 and T2.

Abstract: A system and method for performing real-time quality inspection of objects is disclosed. The system and method include a transport to move objects being inspected, allowing the inspection to be performed in-line. At least one optical acquisition unit is provided that captured optical images of the objects being inspected. The captured optical images are matched to CAD models of objects, and the matched CAD model is extracted. A laser with an illumination light beam has a wavelength in the violet or ultraviolet range then conducts scans of the objects, which are formed into three-dimensional point clouds. The point clouds are compared to the extracted CAD models for each object, where CTF are compared to user input or CAD model information and the object is determined to be acceptable or defective based on the extent of deviation between the point cloud and the CAD model.

Abstract: A method relates to the use of deep learning techniques, which may be implemented using trained neural networks (50), to estimate various types of missing projection or other unreconstructed data. Similarly, the method may also be employed to replace or correct corrupted or erroneous projection data as opposed to estimating missing projection data.

Abstract: This disclosure introduces an approach that includes techniques for determining an optimal weighted execution sequence of available reconstruction algorithms using a multi-processor unit. The introduced approach includes executing a series of optimal weighted execution sequence candidates on a representative slice of the image data and comparing their results to select one of the candidates as the optimal weighted execution sequence.

Abstract: A computer-implemented method and a system are for providing a dose reference value for a patient. In an embodiment, the method includes: determining a body parameter value for each of at least one body parameter of a patient; determining an adjustment factor based at least on the at least one determined body parameter value of the patient; determining a base dose reference value; and providing the dose reference value for the patient based on the base dose reference value adjusted using the determined adjustment factor.

Abstract: A method, apparatus, system, and computer program product for automatically determining exposure time for an intraoral image. The method includes acquiring a low dose pilot projection image of an object to be imaged, performing a sanity check to ensure that a usable exposure is attainable, estimating a remaining exposure time required for an additional projection image, taking the additional projection image and adding the two images together to generate a final image wherein the dose delivered to the x-ray detector is influenced by patient specific dental anatomy.

Abstract: According to the embodiments of the present disclosure, an ultrasonic sensor, an ultrasonic sensing device, a display device, and a biometric information sensing method are provided, in which a first transistor and a second transistor disposed in respective pixels adjacent to each other are driven by a same scan line, and the first transistor controlling the application of a high voltage and the second transistor controlling sensing are configured with different channel types; therefore, a driving interval for generating ultrasonic waves is separated in time from a sensing interval for sensing reflected ultrasonic waves. Accordingly, an interval for applying the high voltage is reduced; therefore, power consumption can be reduced, and the degradation of components constituting the ultrasonic sensor can be overcome or reduced. In addition, sensing can be performed in an area in which ultrasonic waves are generated; thus, sensing sensitivity can be improved.

Abstract: The disclosure relates to a method for imaging by a medical X-ray device. In order to enable a reduction of an X-ray dose during imaging, the method includes: determining a viewing parameter of a viewer with reference to a future display of an image recorded by the X-ray device, determining a recording parameter set including an X-ray dose at least partially in dependence on the viewing parameter, and recording an image by the X-ray device using the recording parameter set.

Abstract: For each respective first-phase rotational position of a set of first-phase rotational positions, an imaging system may generate a respective first-phase image. The imaging system may determine, based on an identified region of interest in the respective first-phase image, collimator blade positions for the respective first-phase rotational position. For each respective second-phase rotational position of a set of second-phase rotational positions, the imaging system may determine, based on the collimator blade positions for the first-phase rotational positions, collimator blade positions for the respective second-phase rotational position. The imaging system may generate a respective second-phase image in a second series of images while the test object is at the respective second-phase rotational position and while the collimator blades are at the collimator blade positions for the respective second-phase rotational position.

Abstract: Described is a system for generating simulated CT images. The system can include a CT image simulator, a phantom database, and a scanner database. The phantom database can include one or more virtual phantoms while the scanner database can include information about one or more CT scanners, including a subject CT scanner. The CT image simulator can use information about a subject patient, a virtual phantom, and scanner information about the subject CT scanner to generate a simulated CT image that closely simulates what an actual CT image would look like if performed on the subject patient using the subject CT scanner. The simulated CT image can be displayed on a display screen. Also described is a method of generating a simulated CT image and CT image simulator software that can be used to generate a simulated CT image.

Abstract: To achieve early detection and prevention of mild dementia by viewing with both left and right eyes in a balanced manner based on the balanced stimulation and activation of the left and right brains to easily mitigate the progression of cognitive function decline and promoting recovery of cerebral vision.

Abstract: A method for cardiovascular-dynamics correlated imaging includes receiving a time series of images of at least a portion of a patient, receiving a time series of cardiovascular data for the patient, evaluating correlation between the time series of images and the time series of cardiovascular data, and determining a property of the at least a portion of a patient, based upon the correlation. A system for cardiovascular-dynamics correlated imaging includes a processing device having: a processor, a memory communicatively coupled therewith, and a correlation module including machine-readable instructions stored in the memory that, when executed by the processor, perform the function of correlating a time series of images of at least a portion of a patient with a time series of cardiovascular data of the patient to determine a property of the at least a portion of a patient.

Abstract: According to one embodiment, an X-ray diagnosis apparatus includes an X-ray tube, an input interface, a holding mechanism, an X-ray detector, a display, and processing circuitry. The X-ray tube is configured to radiate X-rays. The input interface is configured to receive an input manual operation of designating at least a direction. The holding mechanism is configured to hold the X-ray tube, and to move the X-ray tube in accordance with the input manual operation, the X-ray tube radiating X-rays during the moving. The X-ray detector is configured to detect X-rays radiated from the X-ray tube and passing through an object, the X-ray detector generating X-ray image data based on the detected X-rays. The display is configured to subsequently display an X-ray image based on the X-ray image data.

Abstract: A method of generating an image synthesis process is disclosed, where the image synthesis process improves image quality of degraded volumetric images. In the method, a machine learning process is trained in a supervised learning framework as the image synthesis process. In the supervised learning process, a lower-quality partial-data reconstruction of a target volume is employed as an input object in the supervised learning process and a higher-quality full data reconstruction of the target volume is employed as an expected output. The full data reconstruction is generated based on a first set of projection images of the three-dimensional volume and the partial-data reconstruction is generated based on a second set of projection images of the three-dimensional volume, where the second set of projection images includes projection images that have less image information and/or are of a lower image quality than the first set of projection images.

Abstract: The present disclosure relates to systems and methods for image generation. The methods may include obtaining projection data generated by a scanner; generating, based on a first weighting function, a first image by back-projecting the projection data, the first image having a first region corresponding to a first part of the object; generating, based on a second weighting function, a second image by back-projecting the projection data, the second image having a second region corresponding to the first part of the object, the second region of the second image presenting a better CT number uniformity than the first region of the first image; and generating a third image based on the first image and the second image.

Abstract: A computed tomography system is disclosed with a gantry assembly and a base assembly. The gantry assembly having a x-ray source, and a x-ray imager. The base assembly is configured to receive power and provide mechanical stability. A connection interface is located between the gantry assembly and the base assembly. The connection interface is configured to mechanically lock the gantry assembly to the base assembly and provide power to the gantry assembly through the base assembly.

Abstract: A sample inspection apparatus irradiates a sample with a conical shell of X-ray or similar radiation generating a plurality of Debye rings originating from a circular path on the sample. The apparatus is provided with two detectors. A first detector receives diffracted radiation and a second detector receives radiation which is transmitted through a coded aperture provided at a detection surface of the first detector.

Abstract: A method for reconstructing target cardiac images is provided. The method may include: obtaining projection data, the projection data including a plurality of sub-sets of projection data, each sub-set of projection data corresponding to a cardiac motion phase; obtaining a plurality of sampled cardiac motion phases; generating a plurality of cardiac images of the plurality of sampled cardiac motion phases by reconstructing, based on the one or more sub-sets of projection data corresponding to the each sampled cardiac motion phase, one or more cardiac images of the each sampled cardiac motion phase; determining a plurality of cardiac motion parameters corresponding to the plurality of sampled cardiac motion phases based on the plurality of cardiac images; determining a mean phase based on the plurality of cardiac motion parameters corresponding to the plurality of sampled cardiac motion phases; and reconstructing the one or more target cardiac images of the mean phase.

Abstract: An image processing element 9 of the present invention includes a weighting factor setting element 9a that sets up a weighting factors wnn, wbi of the weight addition combing a nearest neighbor interpolation and a bilinear interpolation based on an absolute value |Ibi?Inn| of the difference between the pixel value Inn acquired by the nearest neighbor interpolation and the pixel value Ibi acquired by the bilinear interpolation; and a weight addition element 9b that implement a weighting addition based on the set-up weighting factors wnn, wbi. A reconstructed image can be acquired by arranging the backprojection pixel value Inew every pixel following the weighting.

Abstract: An X-ray computed tomography (CT) apparatus according to an embodiment includes processing circuitry. The processing circuitry is configured to generate image data based on a detection result obtained by detecting X-rays transmitted through a subject with a detector. The processing circuitry is configured to specify a boundary between a first region and a second region in the image data, based on anatomical landmarks in the image data, and adjust setting of scan conditions relating to a tube current value in accordance with information relating to a position of the boundary.

Abstract: According to one embodiment, an X-ray computed tomography apparatus includes processing circuitry. The processing circuitry sets a parameter of an examination protocol. Based on the set parameter, the processing circuitry determines the number of acquisition views and the number of reconstruction views of projection data. The processing circuitry acquires first projection data corresponding to the number of acquisition views. The processing circuitry calculates second projection data corresponding to the number of reconstruction views based on the first projection data. The processing circuitry reconstructs a CT image based on the second projection data.