| US 7,491,941 B2 | ||
| Scanning focal point apparatus | ||
| Timothy Hanson Olden, Nashua, N.H. (US); Dale John Martin, Lunenburg, Mass. (US); Thomas Christopher John Sefranek, Shirley, Mass. (US); Gordon Allan LaPoint, Leominster, Mass. (US); Hugh Adam Stoddart, Harvard, Mass. (US); and Hugh Franklin Stoddart, Groton, Mass. (US) | ||
| Assigned to Neurophysics Corporation, Shirley, Mass. (US) | ||
| Filed on Aug. 04, 2005, as Appl. No. 11/196,945. | ||
| Prior Publication US 2007/0029491 A1, Feb. 08, 2007 | ||
| Int. Cl. G21K 1/02 (2006.01) | ||
| U.S. Cl. 250—363.1 | 5 Claims |
| 1. An apparatus for conducting high resolution imaging of radioactive emissions from a desired source, the apparatus comprising:
a collimator comprised of a plurality of stacked plates, each plate having a plurality of holes through each plate defining
a plurality of passages through the collimator permitting the passage of radiation therethrough;
a scintillation crystal permitting the detection of photons coming from the source and passing through the collimator to produce
light received by a light pulse sensor;
a data processor connected to the light pulse sensor for digitally computing the count of photons and visually constructing
a digital image on a display device of the relative location of the emitted radiation;
an optical integrating cavity for directing the photons emitted by the scintillation crystal to the light pulse sensor; and
wherein the plurality of stacked plates comprises certain plates made from a different material than a remainder of the stacked
plates.
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