Imaging system using multisource collimation and a method assembly and system for providing multisource collimation

摘要

Disclosed is a collimator assembly for a multi-radiation-source medical imaging system (e.g. CT) and a medical imaging system utilizing the collimator. According to some embodiments of the present invention, there is provided a collimator assembly including at least two apertures, which apertures are adjustable substantially synchronously by one or more actuators.

主权项

1. An imaging radiation source assembly comprising:
two radiation sources arranged along a common plane parallel to a plane of an associated radiation detector, each of said two radiation sources being substantially concurrently positioned to emit x-ray radiation in generally common or parallel trajectories to the other radiation source of said two radiation sources; a multi-aperture collimator arrangement located in a path of the emitted x-ray radiation of both of said two radiation sources and formed by first and second side x-ray beam blocking elements and by at least a first intermediate x-ray beam blocking element positioned between said first and second side x-ray beam blocking elements, such that an opening between said first side x-ray beam blocking element and a first edge of said at least first intermediate x-ray beam blocking element forms a first aperture, and an opening between a second edge of said at least first intermediate x-ray beam blocking element and said second side x-ray beam blocking element forms a second aperture, wherein one of said first and second apertures is located in a respective path of the emitted x-ray radiation of each of said two radiation sources and said collimator collimates the beams of radiation emitted from said two radiation sources to significantly overlap each other, thereby combining at least a portion of the beams from said two radiation sources into a combined irradiated volume; and at least a first actuator adapted to alter substantially in synchronous dimensions each of said first and second apertures by moving one or more of said x-ray beam blocking elements.