Gamma camera with image uniformity by energy correction offsets

Details Gamma camera with image uniformity by energy correction offsets Gamma camera with image uniformity by energy correction offsets

1988-01-19

1990-02-06

Hannaher, Constantine

Radiant energy

Invisible radiant energy responsive electric signalling

With or including a luminophor

25036307, 25036309, G01T 1161

Patent

active

048990540

ABSTRACT:
Inherent non-uniformities in a gamma camera system are compensated for by reducing the sensitivity for some locations on the detector. The tradeoff between image uniformity improvement and loss of camera sensitivity is maximized. Since the energy correction offsets direct the energy spectra downwards (or the energy window upwards). Scatter rejection is also improved.

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L. Stephen Graham, et al., "Effects of Asymmetric Photopeak Windows on Flood Field Uniformity and Spatial Resolution of Scintillation Cameras", Journal of Nuclear Medicine, vol. 27, No. 5, 1986, pp. 706-713.
B. David Collier, et al., "Gamma Camera Energy Windows for Tc-99m Bone Scintigraphy: Effect of Asymmetry on Contrast Resolution", Radiology, vol. 151, 1984, pp. 495-497.

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