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 Title: |
US5719400:
High resolution detector array for gamma-ray imaging
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Cherry, Simon R.; Los Angeles, CA
Shao, Yiping; Los Angeles, CA
Siegel, Stefan B.; Reseda, CA
Silverman, Robert W.; Sherman Oaks, CA
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| Assignee: |
The Regents of the University of California, Oakland, CA
other patents from UNIVERSITY OF CALIFORNIA, THE REGENTS OF (599425) (approx. 4,840)
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| Published / Filed: |
1998-02-17
/ 1995-08-07
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| Application Number: |
US1995000512175
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| IPC Code: |
Advanced:
G01T 1/202;
G01T 1/208;
G01T 1/29;
Core:
G01T 1/00;
IPC-7:
G01T 1/166;
G01T 1/202;
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| ECLA Code: |
G01T1/202; G01T1/208; G01T1/29D4;
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| U.S. Class: |
Current:
250/368;
250/363.03;
250/367;
250/369;
Original:
250/368;
250/363.03;
250/367;
250/369;
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| Field of Search: |
250/367,368,363.03,369
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| Priority Number: |
| 1995-08-07 |
US1995000512175 |
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| Abstract: |
A gamma ray detection and locating system comprising an array of scintillator crystals connected to a multichannel photomultiplier tube by discrete optical fibers, each fiber connecting a single crystal to a corresponding specific location on the face of the photomultiplier tube. Also described is an improved system for identifying the location of specific electrodes in the photomultiplier tube receiving electrons generated by photons flowing from the crystal along the fiber to the tube.
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| Attorney, Agent or Firm: |
Ram, Michael J. ;
Kleinberg, Marvin H. ;
Lerner, Marshall A. ;
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| Primary / Asst. Examiners: |
Fields, Carolyn E.;
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| INPADOC Legal Status: |
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Family Legal Status Report
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| Designated Country: |
AL AM AP AZ BB BG BR BY CA CN CZ EE EP GE HU IL IS JP KG KP KR KZ LK LR LT LV MD MG MK MN MW MX NO NZ OA PL RO RU SG
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| Family: |
Show 3 known family members
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First Claim:
Show all 2 claims |
What is claimed is:
1. A gamma ray detection system comprising an array of multiple scintillating crystals, each crystal having a first end of an optical fiber attached thereto, a second end of said optical fiber being attached to a light receiving surface of a multichannel photomultiplier tube, said multi-channel photo multiplier tube having an output surface containing an array of electrodes arranged in rows, there being more than one row of electrodes with the same number of electrodes in each row, each electrode being capable of emitting electrons in response to stimulation of an identifiable portion of the light receiving surface, the output surface of the photo multiplier tube having attached thereto a circuit comprising a resistor attached between each subsequent electrode in a row, each row of attached electrodes having a first and second end, the first ends being connected in series to a first electrical conduit, the first electrical conduit having a resistor positioned along the conduit between each first end of each row, the first conduit having a first end and a second end each configured for determining a voltage output therefrom, each row of attached electrodes also being connected in series at its second end to a second electrical conduit, the second electrical conduit having a resistor positioned along the conduit between each first end of each row, the second electrical conduit having a first end and a second end each configured for determining a voltage output therefrom.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 6 U.S. patent(s) that reference this one
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| Foreign References: |
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| Other Abstract Info: |
CHEMABS 126(16)217677F
DERABS G97-154404
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| Other References: |
Hayashi, "New Photomultiplier Tubes for Medical Imaging", IEEE Trans. Nucl. Sci., 36(1), Feb. 1989.
M.E. Casey and R. Nutt, "A Multicrystal Two Dimensional BGO Detector System for Positron Emission Tomography," IEEE Transactions on Nuclear Science, vol. 33, No. 1, Feb. 1986.
J.G. Rogers, et al., "An Improved Multicrystal 2-D BGO Detector for PET", IEE Transactions on Nuclear Science, vol. 39, No. 4, 1992.
Tetsuo Matsumoto, "Dos Equivalent Measurement for Thermal Neutrons and Gamma Rays with a Small BGO Scintillator Connected to an Optical Fibre," Radiation Protection Dosimetry, vol. 35, No. 4, pp. 241-245 (1991), Nuclear Technology Publishing.
(5 pages)
[ISI abstract]
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