Detector for nuclear medicine
AssigneeKoninklijke Philips Electronics N.V.
InventorHerfried K. Wieczorek
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Abstract
A radiation imaging device suitable for SPECT or other nuclear imaging includes a detector (22) which receives radiation. A fan beam-slit collimator (20) is positioned adjacent a radiation receiving face (32) of the detector, intermediate the detector and a radiation source (12, 18). The collimator includes a plurality of slats (30) having a common focus. A body (44) adjacent the slats defines one or more elongate slits (46). The slit is arranged such that radiation passes through the slit and between the slats to the detector face. The body is at least substantially impermeable to the radiation. The fan beam-slit collimator (20) enables higher resolution or efficiency to be achieved from the detector.
Claims20
A radiation imaging device comprising:
- a radiation detector;
- a collimator adjacent a radiation receiving face of the detector, the collimator comprising:
- a plurality of spaced slats having a common focus;
- and
- a body adjacent the slats which defines an elongated slit, the slit being arranged such that radiation passes through the slit and between the slats to the detector, the body being opaque to the radiation.
An imaging method comprising:
- directing radiation from a source towards a detector;
- interposing one or more slits and a plurality of spaced slats between the radiation source and the detector, the slats having a common focus, whereby radiation passes through the slit and between the slats onto the detector.
The method of 19, further including:
- reconstructing a three dimensional image from detected radiation.
Dependencies are inferred from the claim text.