System and method for collimation in diagnostic imaging systems
AssigneeGeneral Electric Company
InventorsFloribertus P. M. Heukensfeldt Jansen, Yaron Hefetz
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Abstract
A system and method for collimation in diagnostic imaging systems is provided. One collimation system includes a collimator for a radiation imaging detector having a plurality of adjustable segments and a plurality of collimator holes within each of the plurality of adjustable segments. The plurality of adjustable segments are configured to move independently of a detector to adjust a field of view of the collimator holes.
Claims20
A collimator for a radiation imaging detector, the collimator comprising:
- a plurality of adjustable segments;
- a plurality of collimator holes within each of the plurality of adjustable segments, and wherein the plurality of adjustable segments are configured to move independently of a detector to adjust a field of view of the collimator holes;
- and
- a shielding member between each of the plurality of adjustable segments.
A nuclear medicine (NM) imaging system comprising:
- a gantry;
- at least one imaging detector supported on the gantry and configured to rotate about the gantry defining an axis of rotation;
- a segmented collimator connected to the at least one imaging detector, the segmented collimator having a plurality of movable segments configured to move independently of the at least one imaging detector, wherein the movable segments are independently controllable;
- a controller configured to control movement of the movable segments;
- and
- an image reconstruction module configured to reconstruct an image from data acquired from the at least one imaging detector, wherein the image reconstruction module is configured to compute a probability that image voxels are obtained from a projection for a plurality of at least one of segments, detector or gantry angle combinations.
A method for collimating a detector of an imaging system, the method comprising:
- configuring a segmented collimator to provide movement of each of a plurality of segments independently of a detector to adjust a field of view of collimator holes of the plurality of segments;
- coupling the segmented collimator to the detector of the imaging system;
- and
- providing a controller to control the imaging system to move at least one of the plurality of segments, the detector or a gantry of the imaging system to which the detector is coupled, wherein the controlling comprises using acquired scan acquisition information for a current scan to control movement of the segmented collimator.
Dependencies are inferred from the claim text.