Radiant energy – Invisible radiant energy responsive electric signalling – With or including a luminophor
Patent
1992-11-25
1994-12-27
Hannaher, Constantine
Radiant energy
Invisible radiant energy responsive electric signalling
With or including a luminophor
25036302, 356376, G01T 1166, G01T 120, G01B 1124
Patent
active
053767969
ABSTRACT:
A direct measurement system for proximity detection of a body profile for use within nuclear medicine. The measurement system includes two or three proximity detector units mounted on a gantry structure of a nuclear medicine camera which each emit an energy beam which is swept across a portion of a target body. Each detector is capable of directly measuring the distance from the proximity detector unit to the target body with a beam sample. The detectors then create a body profile of the target body which is used to minimize the distance between the collimator of a scanning camera and the target body surface thus improving image quality of the scanning camera. There is relative motion between the object and the gantry along a cranial-caudal axis of a target body for scanning successive body profiles. Successive body profiles are combined together to achieve a complete body contour of the target body. The proximity detector units are stationary with respect to movement of the scanning camera toward said target body. Body contour data is also used for attentuation correction.
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Gullberg, Grant T., et al., "Boundary Determination Methods for Attenuation Correction in Single Photon Emission Computed Tomography", Emission Computed Tomography: Current Trends-13th Annual Symposium on the Sharing of Computer Programs and Technology in Nuclear Medicine, The Society of Nuclear Medicine, Inc., 1983, pp. 33-53.
Bayer Kenneth G.
Chan David A.
Hines Horace H.
Hug Paul
Jones Steven M.
ADAC Laboratories, Inc.
Glick Edward J.
Hannaher Constantine
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