Systems and methods for improving radiographic scanning. In an example, the technology relates to a system for performing radiographic scanning. The system includes a photon source configured to emit photons. The system also includes a photon counting detector for detecting photons emitted from the photon source after passing through a target. The photon counting detector comprising first pixels having a first size and second pixels having a second size, and the first size is greater than the second size.

A radioscopic apparatus includes a controller configured or programmed to, when imaging information using the first radiation source is selected, perform control of retracting a second detector to a position in one of longitudinal ends of a table, at which the second detector does not block radiation emitted from a first radiation source, according to information about a region to be imaged of a subject included in the selected imaging information.

A radioscopic apparatus includes a controller configured or programmed to, when imaging information using the first radiation source is selected, perform control of retracting a second detector to a position in one of longitudinal ends of a table, at which the second detector does not block radiation emitted from a first radiation source, according to information about a region to be imaged of a subject included in the selected imaging information.

A mechanical linkage system of PET and CT/MRI and a linkage scanning method thereof are disclosed. According to an example of the disclosure, the mechanical linkage system includes a PET host, a CT/MRI host, a scanning bed, and a moving system. The PET host includes a PET detector installed in a PET detector fixing plate and configured to form a positron emission computed tomography image. The CT/MRI host has a larger aperture than the PET detector. A front end of the PET host and a front end of the CT/MRI host are oppositely disposed. The scanning bed is located to an end of the CT/MRI host. The moving system is connected with at least one of the PET host or the CT/MRI host and configured to move the PET detector into or out of a scanning field of view of the CT/MRI host.

Nuclear medicine (NM) imaging system includes a plurality of detector assemblies that each have a movable arm and a detector head that is coupled to the movable arm. The movable arm is configured to move the detector head toward and away from an object. The NM imaging system also includes at least one processor configured to determine a body contour of the object and determine an acquisition configuration using the body contour. The acquisition configuration includes at least three of the detector heads positioned in a dense group that borders the body contour. The detector heads in the dense group are primary detector heads. The at least one processor is also configured to move at least one of the object or one or more of the primary detector heads so that the primary detector heads are in the dense group near the object.

A computed tomography (CT) detector apparatus includes a plurality of detector arrays arranged in a ring, wherein for at least one array that includes a plurality of elements, an anode pixel pattern is non-uniform in a z-axis direction and a thickness of each element in the array is correspondingly non-uniform along the z-axis direction. A size of the anode pixels increases proportionally away from a center of the array, and a thickness of the elements increases away from the center of the array. The ratio of the thickness of the element to the size of the anode pixels is substantially the same over the array.

A mechanical linkage system of PET and CT/MRI and a linkage scanning method thereof are disclosed. According to an example of the disclosure, the mechanical linkage system includes a PET host, a CT/MRI host, a scanning bed, and a moving system. The PET host includes a PET detector installed in a PET detector fixing plate and configured to form a positron emission computed tomography image. The CT/MRI host has a larger aperture than the PET detector. A front end of the PET host and a front end of the CT/MRI host are oppositely disposed. The scanning bed is located to an end of the CT/MRI host. The moving system is connected with at least one of the PET host or the CT/MRI host and configured to move the PET detector into or out of a scanning field of view of the CT/MRI host.

Systems and methods for improving radiographic scanning. In an example, the technology relates to a system for performing radiographic scanning. The system includes a photon source configured to emit photons. The system also includes a photon counting detector for detecting photons emitted from the photon source after passing through a target. The photon counting detector comprising first pixels having a first size and second pixels having a second size, and the first size is greater than the second size.

Systems and methods for improving radiographic scanning. In an example, the technology relates to a system for performing radiographic scanning. The system includes a photon source configured to emit photons. The system also includes a photon counting detector for detecting photons emitted from the photon source after passing through a target. The photon counting detector comprising first pixels having a first size and second pixels having a second size, and the first size is greater than the second size.