Solid state gamma camera
AssigneeGE Medical Systems Israel, Ltd.
InventorsGideon Berlad, Yaron Hefetz
Life of this patent
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Abstract
A gamma camera for imaging radiation emitted from or transmitted by an object including a gamma camera head having a front input surface which produces signals, when a photon associated with the radiation is detected by the head, indicative of the position of the position of the detection on the input surface and at a given resolution in the absence of dithering of the head; and a dithering system which differentially translates the detector head or the object in at least one direction parallel to the input surface so that the dithering system translates the detector head or the object by an amount at least equal to the given resolution but less than 50 times the given resolution during acquisition of the signals.
Claims23
A gamma camera for imaging radiation emitted from or transmitted by an object, comprising:
- a gamma camera head having a front, input, surface (18), and which produces signals, when a photon associated with the radiation is detected by the head, indicative of the position of the detection on the input surface, at a given resolution in the absence of dithering of the head;
- and
- a dithering system which differentially translates the detector head or the object in at least one direction parallel to the input surface,
- wherein the dithering system translates the detector head or the object by an amount at least equal to the given resolution but less than 50 times the given resolution during acquisition of the signals.
A gamma camera for imaging radiation emitted from or transmitted by an object, comprising:
- a gamma camera head having a front, input, surface, and which produces signals, when a photon associated with the radiation is detected by the head, indicative of the position of the detection on the surface, at a given resolution in the absence of dithering;
- and
- a dithering system which differentially translates the gamma camera head or the object,
- wherein the dithering system translates the gamma camera head or the object in two directions parallel to the front surface by an amount greater than the given resolution during acquisition of the signals.
A gamma camera for imaging radiation emitted from or transmitted by an object, comprising:
- a gamma camera head having a front, input, surface,
- a plurality of detectors, each having a physical extent and spacings which define a given physical resolution of the head and which produces signals, when a photon associated with the radiation is detected by the head, indicative of the position of the event on the surface at the physical resolution;
- and
- an imaging system which provides an image of the distribution of the detected radiation, based on the signals, having an image resolution which is substantially constant over the image.
Dependencies are inferred from the claim text.