In an X-ray CT device according to an embodiment, reconstruction circuitry reconstructs a positioning image from projection data collected based on a detection signal of transmitted X-rays in positioning imaging performed at a first tube current. Circuitry detects body parts of a subject included in the positioning image. Storage stores information pieces relating to body parts, image quality levels for each of the information pieces relating to the body parts, and an X-ray count value corresponding to each of the image quality levels in an associated manner. The circuitry selects an image quality level corresponding to a desired body part. The circuitry acquires a second tube current based on the first tube current, an X-ray count value in the positioning imaging, and an X-ray count value associated with the selected image quality level. The circuitry controls an X-ray tube to perform main imaging based on the second tube current.

There is provided a medical image processing apparatus which includes a first extraction unit configured to extract coronary arteries depicted in images of a plurality of time phases relating to the heart, and to extract at least one stenosed part depicted in each coronary artery; a calculation unit configured to calculate a pressure gradient of each of the extracted coronary arteries, based on tissue blood flow volumes of the coronary arteries; a second extraction unit configured to extract an ischemic region depicted in the images; and a specifying unit configured to specify a responsible blood vessel of the ischemic region by referring to a dominance map, in which each of the extracted coronary arteries and a dominance territory are associated, for the extracted ischemic region, and to specify a responsible stenosis, based on the pressure gradient corresponding to a stenosed part in the specified responsible blood vessel.

A tomogram of an object is acquired. A place in a tomogram which corresponds to a portion spaced apart from a reference point in the object by a predetermined distance is specified. A composite image is generated by combining the tomogram with information indicating the specified place. The composite image is output.

The present invention provides a method for spine position detection, comprising: obtaining 2D geometrical configuration of a current vertebra body selected from a plurality of vertebra bodies visible in an image on a sagittal plane defined by a horizontal component of an initial point, a geometrical template being applied to the current vertebra body and the 2D geometrical configuration of the current vertebra body being adjusted by a predetermined correlation evaluation; searching adjacent edge points of next vertebra body corresponding to a number of edge points of the current vertebra body by identifying the gradient values along the direction substantially perpendicular to the edge of the current vertebra body based on the adjusted 2D geometrical configuration of the current vertebra body; calculating height of an intervertebral disc located between the current vertebra body and the next vertebra body based on an average of the distances between the edge points of the current vertebra body and the corresponding adjacent edge points of the next vertebra body; determining 2D geometrical configuration of the next vertebra body based on the height of the intervertebral disc and the adjusted 2D geometrical configuration of the current vertebra body. Then the transverse images of the intervertebral discs can be formed to serve for diagnosis.

An image display control apparatus includes: an image obtaining unit that obtains an image of a backbone region that includes at least a portion of the backbone of a subject; an emphasized display target region specifying unit that specifies an emphasized display target region within the backbone region based on the image; a bone metastasis region specifying unit that specifies an osteolytic metastasis region included in the backbone region; and a display control unit that causes images to be displayed by a display unit. The display control unit displays an osteolytic metastasis region that belongs within the emphasized display target region with a greater degree of emphasis than an osteolytic metastasis region outside the emphasized display target region.

The present invention is disclosing several methods related to intra-body navigation of radiopaque instrument through natural body cavities. One of the methods is disclosing the pose estimation of the imaging device using multiple images of radiopaque instrument acquired in the different poses of imaging device and previously acquired imaging. The other method allows to resolve the radiopaque instrument localization ambiguity using several approaches, such as radiopaque markers and instrument trajectory tracking.

The present disclosure provides a positron emission tomography (PET) system and an image reconstruction method thereof. The PET system may include a plurality of annular detector units arranged along an axial direction. Each of the detector units may generate a plurality of single event counts. The PET system may further include a plurality of coincidence logic circuits connected to one or more of the detector units. The coincidence logic circuits may be configured to count coincidence events. Single event data generated by each of the detector units may be transmitted to the corresponding coincidence logic circuit. The plurality of coincidence logic circuits may synchronically generate coincidence counts relating to the plurality of detector units.

A method and corresponding arrangement for reconstructing an image based on spectral image data acquired for at least two different effective energies includes: obtaining a first set of spectral image data related to an object to be imaged and a second set of spectral image data related to a calibration phantom including at least one reference material; performing basis decomposition based on the first set of spectral image data, providing estimated basis images of the object to be imaged with respect to associated basis functions; performing basis decomposition based on the second set of spectral image data, providing calibrated estimates of reference basis coefficients corresponding to the at least one reference material; and determining image values representing the object based on a system model of an imaging system to be emulated, the estimated basis images and their associated basis functions, and the calibrated estimates of reference basis coefficients.

Proposed is a medical imaging system including: a C-arm including an X-ray source and a detector; a first plate installed on an X-ray path between the X-ray source and the detector, and including a first transmissive surface provided with a plurality of first ball markers blocking an X-ray, and a first optical marker; a second plate installed on the X-ray path between the X-ray source and the detector, and including a second transmissive surface provided with a plurality of second ball markers blocking the X-ray, and a second optical marker; a reference optical marker configured to provide a 3D reference coordinate system; an optical tracking device configured to recognize locations of the first and second optical markers and the reference optical marker; and a matcher configured to calculate a matching relationship between coordinates on a 3D reference coordinate system and locations on first and second captured images.

The present application provides a medical imaging method and system and a non-transitory computer-readable storage medium. The medical imaging method comprises obtaining an original image acquired by an X-ray imaging system, and post-processing the original image based on a trained network to obtain an optimized image after processing.