Method and apparatus for controlling scintillation camera

Details Method and apparatus for controlling scintillation camera Method and apparatus for controlling scintillation camera

1981-09-23

1985-05-07

Howell, Janice A.

Radiant energy

Calibration or standardization methods

250363S, 250369, G01T 120

Patent

active

045160252

ABSTRACT:
A method for controlling a scintillation camera has a step of, under the control of a CPU, displacing a radiation source displacing device to which is fixed a radiation source and obtaining a center of sensitivity of a photomultiplier tube to be measured. After the center of sensitivity including the effects of the waveform shaping circuit is obtained, the radiation source is displaced in a plurality of directions relative to the center of sensitivity under the control of the CPU, so as to obtain an average photomultiplier tube response (PMT response) as a function of distance from the center of sensitivity of the photomultiplier tube. The CPU compares the obtained average PMT response with a reference PMT response which provides an image of optimal uniformity to obtain data by which the average PMT response approaches the reference PMT response. Based on this data, the CPU obtains parameters of the waveform shaping circuit to provide a response close to the reference PMT response.

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Baldin, "Highly Sensitive Shapers of Photomultiplier Signals", Instrum. & Exp. Tech., 23 (5), Apr. 1981, (Translated from Pribory; Tek. Eksp. No. 5, pp. 137-141, Sep./Oct. 1980), pp. 1202-1207.

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