Boots – shoes – and leggings
Patent
1979-11-20
1982-02-16
Wise, Edward J.
Boots, shoes, and leggings
364571, 364515, 364577, 250363R, 250363S, G06F 1542, G06K 900
Patent
active
043162576
ABSTRACT:
A method and apparatus for the dynamic modification of the spatial distortion correction capabilities of a scintillation camera having spatial distortion correction apparatus. The spatial distortion correction apparatus includes a memory having stored therein spatial distortion correction factors in a predetermined addressable format. During the on-line use of the scintillation camera, the spatial distortion correction apparatus transforms the image event coordinate position data from the scintillation camera in accordance with the stored distortion correction factors to provide corrected image event coordinate repositioning data. The spatial distortion correction modification apparatus and method provides modification of the corrected image event coordinate data in accordance with the respective energy levels of the image events to provide accurate spatial distortion correction characteristics for the actual energy levels of the image events. The scintillation camera is thus automatically and dynamically capable of correcting for spatial distortion effects for image events of different energy levels. Different energy levels of image events occur when the scintillation camera is utilized with energy sources having multiple energy levels or a different energy level than the energy level at which the stored spatial distortion correction factors were calculated. The spatial distortion correction modification apparatus provides operation without the alteration of the scintillation camera apparatus and without any change in the stored correction factors. In a preferred embodiment, a coordinate correction factor of the spatial distortion correction apparatus is modified in accordance with the energy level of each image event, the coordinate correction factor of the spatial distortion correction apparatus being combined with the image event coordinate position data to provide corrected image event coordinate data.
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Arseneau Roger E.
Del Medico Anthony P.
Siemens Gammasonics Inc.
Wise Edward J.
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