Device and method for correcting sensitivity of a gamma camera

Details Device and method for correcting sensitivity of a gamma camera Device and method for correcting sensitivity of a gamma camera

1988-09-16

1990-02-27

Hannaher, Constantine

Radiant energy

Invisible radiant energy responsive electric signalling

With or including a luminophor

25036301, 36457101, G01T 120, G01T 1164

Patent

active

049048708

ABSTRACT:
A gamma camera sensitivity correction device and method which utilizes the fact that the collimator's characteristic correction coefficients do not change with time, wherein first of all the collimator's characteristic sensitivity data are found, and then freshly collected detector characteristic uniformity data are found with the collimator removed. From the collimator's characteristic sensitivity data and detector's characteristic uniformity data, uniformity data in the condition that the collimator is mounted on the detector are derived. Then, correction coefficients are determined based on these derived uniformity data. In this way, the uniformity correction matrix for sensitivity correction can be found with a small radiation source in a short time.

REFERENCES:
patent: 4060726 (1977-11-01), Luitwieler et al.
patent: 4424446 (1984-01-01), Inbar et al.
patent: 4429226 (1984-01-01), Inbar
patent: 4582995 (1986-04-01), Lim et al.
patent: 4588897 (1986-05-01), Inbar et al.
patent: 4695964 (1987-09-01), Seto et al.

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