A method is for capturing projection data. The method includes positioning the first diaphragm jaw and a second diaphragm jaw to set a layer collimation of a fan beam of radiation via the first diaphragm jaw and the second diaphragm jaw; capturing projection data of a region of a patient to be imaged via a detector and radiation source rotated in a plane of rotation, moving the region of the patient to be imaged relative to the plane of rotation, the fan beam penetrating the region of the patient to be imaged and striking the detector; and moving at least one of the first and second diaphragm jaw during the capturing, to dynamically adjust a position of a boundary surface of the fan beam to a position of a boundary surface of the region, to avoid the fan beam penetrating the patient outside the region to be imaged.

A method is for capturing projection data. The method includes positioning the first diaphragm jaw and a second diaphragm jaw to set a layer collimation of a fan beam of radiation via the first diaphragm jaw and the second diaphragm jaw; capturing projection data of a region of a patient to be imaged via a detector and radiation source rotated in a plane of rotation, moving the region of the patient to be imaged relative to the plane of rotation, the fan beam penetrating the region of the patient to be imaged and striking the detector; and moving at least one of the first and second diaphragm jaw during the capturing, to dynamically adjust a position of a boundary surface of the fan beam to a position of a boundary surface of the region, to avoid the fan beam penetrating the patient outside the region to be imaged.

A radiographic imaging apparatus and a radiation detector are provided, which are capable of sufficiently reducing the sensitivity difference between pixels even if the incident photon rate is high. A radiographic imaging apparatus includes: a radiation source for irradiating an object with radiation; a plurality of detection element modules each having a semiconductor layer that generates electrical charges depending on photon energy of the radiation, and a photon counting circuit for counting the electrical charges for each pixel; and a collimator that is disposed between the radiation source and the semiconductor layer, and has a plurality of walls forming a plurality of passage holes through which the radiation passes. A plurality of subpixels is formed on the semiconductor layer, and when one or more subpixels defined by the walls of the collimator are grouped as a macro pixel, a plurality of macro pixels arranged from each end of each of the detection element modules is smaller in size than a macro pixel other than the plurality of macro pixels arranged from the end of the detection element module.

Multiposition collimation devices and x-ray imaging systems, which include the multiposition collimation devices, are provided. The multiposition collimation device includes a collimator housing and a collimator plate constructed to at least partially block the passage of x-rays. The collimator plate is movable relative to the collimator housing to a first position, corresponding to a first x-ray detector size, and a second position, corresponding to a second x-ray detector size.

Multiposition collimation devices and x-ray imaging systems, which include the multiposition collimation devices, are provided. The multiposition collimation device includes a collimator housing and a collimator plate constructed to at least partially block the passage of x-rays. The collimator plate is movable relative to the collimator housing to a first position, corresponding to a first x-ray detector size, and a second position, corresponding to a second x-ray detector size.

The present disclosure provides an imaging system and method for nuclear medicine imaging. The imaging system may include a detector and a collimator. The detector may be configured to detect photons. The collimator may have at least two sets of pinholes. The at least two sets of pinholes may include a first set of first pinholes and a second set of second pinholes. Each second pinhole of the second set of second pinholes may be equipped with a filter configured to filter the photons.

The present disclosure may provide a SPECT system. The SPECT system may include a collimator including a group of first pinholes and a group of second pinholes. The group of first pinholes may be configured to remain open. The group of second pinholes may be configured to alternate between an open configuration and a blocked configuration. The collimator may be configured to allow photons to traverse through at least one group of the group of first pinholes or the group of second pinholes. The SPECT system may also include a detector configured to detect at least a portion of the photons that have traversed the collimator.

The present disclosure may provide a SPECT system. The SPECT system may include a collimator including a group of first pinholes and a group of second pinholes. The group of first pinholes may be configured to remain open. The group of second pinholes may be configured to alternate between an open configuration and a blocked configuration. The collimator may be configured to allow photons to traverse through at least one group of the group of first pinholes or the group of second pinholes. The SPECT system may also include a detector configured to detect at least a portion of the photons that have traversed the collimator.

Provided is a medical imaging apparatus having an AR-visualization module operably coupled to a camera and to a position determination module, which is adapted to create an AR-image based on an image received from the camera and an AR-overlay positionally registered with the image, and which includes a display interface adapted to transmit the created AR-image to a medical display.

Provided is a medical imaging apparatus having an AR-visualization module operably coupled to a camera and to a position determination module, which is adapted to create an AR-image based on an image received from the camera and an AR-overlay positionally registered with the image, and which includes a display interface adapted to transmit the created AR-image to a medical display.