Gamma ray imaging detector

Details Gamma ray imaging detector Gamma ray imaging detector

1990-06-14

1992-12-15

Howell, Janice A.

Radiant energy

Invisible radiant energy responsive electric signalling

With or including a luminophor

25037011, G01T 1202

Patent

active

051719983

ABSTRACT:
A gamma ray imaging detector is disclosed for use in nuclear medicine applications. The imaging detector includes a single scintillation detector crystal which converts absorbed gamma rays into a plurality of scintillation photons. The scintillation detector crystal emits scintillation light with a spectral distribution for which most of the yield corresponds to wavelengths longer than 475 nanometers and is preferably a thallium doped cesium iodide crystal. An array of photodiodes are arranged along one side of the crystal to receive the scintillation photons which generate an electrical output signal proportional to the number of scintillation photons received by the photodiode. Diodes with low capacitance and electrical noise, such as silicon drift photodiodes, are employed so that the signal generated by the photodiode as a result of the received scintillation photons is readily detectable above the electrical noise from the photodiodes. Electronic circuitry is then utilized to determine the position of impingement and absorption of the gamma ray.

REFERENCES:
patent: 2779876 (1957-01-01), Tobias et al.
patent: 3011057 (1961-11-01), Anger
patent: 3732419 (1973-05-01), Kulberg et al.
patent: 3745345 (1973-07-01), Muehllehner
patent: 3752981 (1973-08-01), Jaszczak
patent: 3784819 (1974-01-01), Martone et al.
patent: 3984689 (1976-10-01), Arseneau
patent: 4058728 (1977-11-01), Nickles
patent: 4060730 (1977-11-01), Zioni et al.
patent: 4061919 (1977-12-01), Miller et al.
patent: 4071762 (1978-01-01), Lange et al.
patent: 4100413 (1978-07-01), Inbar et al.
patent: 4151416 (1979-04-01), Richey et al.
patent: 4179607 (1979-12-01), Lange et al.
patent: 4212061 (1980-07-01), Knoll et al.
patent: 4223388 (1980-09-01), Nishikawa et al.
patent: 4298944 (1981-11-01), Stoub et al.
patent: 4316257 (1982-02-01), Del Medico et al.
patent: 4672207 (1987-06-01), Derenzo
patent: 4883966 (1989-11-01), Wong
patent: 4940901 (1990-07-01), Henry et al.
patent: 4945243 (1990-07-01), Arques
patent: 4982095 (1991-01-01), Takahashi et al.
Holl, Lorenz and Mageras, IEEE Trans. Nucl. Sci., vol. 35 No. 1, pp. 105-109 (1988).
Grassman, Lorenz and Moser, Nucl. Instr. and Meth. 228, pp. 323-326 (1985).
"Solid State Photodiodes for Scintillation Detectors" Technical Information document, SD-08/Nov. 1987, Hamamatsu Corp.
Bian, Dobbins and Mistry, Nucl. Instr. and Meth. A239, pp. 518-526 (1985).
E. Gatti, P. Rehak, Nucl. Instr. and Meth. 225 (1984) 608.
B. S. Avset et al., IEEE Trans. Nucl. Sci. 36 No. 1 (1989) 295.
P. Rehak, E. Gatti, et al., IEEE Trans. Nucl. Sci. vol. 36 No. 1 (1989) pp. 203-209.
"Photodetectors" pp. 743-789.
B. S. Avset et al., Nucl. Inst. and Meth. A288 (1990) pp. 131-136.

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