CONE BEAM COMPUTED TOMOGRAPHY VOLUMETRIC IMAGING SYSTEM

摘要

Embodiments of methods and/or apparatus for a radiographic imaging can include a plurality of x-ray sources disposed in a curve and a detector configured to revolve relative thereto. In one embodiment, a CBCT imaging method and/or apparatus can include performing a first scan at a first speed using stationary angularly distributed x-ray sources to acquire first CBCT projection data that impinge a detector of a first field of view (FOV), identifying an area of interest within the first FOV, and performing a second scan at a second speed using the x-ray sources acquire second CBCT projection data that impinge a portion of the detector of a second smaller FOV including the area of interest within the first FOV using second emissions by the x-ray sources, where the second speed is greater than the first speed.

主权项

1. A method of performing radiographic examination by a radiographic CT imaging system, the radiographic CT imaging system to include a plurality of stationary x-ray sources disposed in a curve and a detector configured to revolve relative to the plurality of x-ray sources, the radiographic examination method comprising
performing a first scan at a first rotation speed using the plurality of x-ray sources and the detector to acquire first CT projection data of a first field of view (FOV) of an object using first emissions by the plurality of x-ray sources that impinge the detector; identifying a plane of interest within the first FOV; performing a second scan at a second rotation speed using the plurality of stationary x-ray sources and the detector to acquire second CT projection data of a second smaller FOV including the plane of interest within the first FOV using second emissions by the plurality of x-ray sources that impinge a portion of the detector, where the second rotation speed is greater than the first rotation speed; and outputting the data of the first CT projection data and the second CT projection data from the detector.