Septal artifact cancellation in positron emission tomography

Details Septal artifact cancellation in positron emission tomography Septal artifact cancellation in positron emission tomography

1998-02-20

2000-10-10

Hannaher, Constantine

Radiant energy

Invisible radiant energy responsive electric signalling

With or including a luminophor

2503631, G01T 1166

Patent

active

061304301

ABSTRACT:
A camera for use in coincidence imaging includes detector heads (10a, 10b) disposed about an examination region (12). The detector heads (10a, 10b) include septa (36) for absorbing radiation having a relatively large axial angle. The septa, however, cause the sensitivity of the detectors (10a, 10b) to vary as a function of axial position along their face. The relative positions of the detectors (10a, 10b) and the patient are varied so as to reduce septal artifacts. In particular, artifacts arising from second and fourth harmonics may be reduced.

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