Image Aberrations Produced by Multichannel Collimators for a Scintillation Camera
1971; Radiological Society of North America; Volume: 98; Issue: 2 Linguagem: Inglês
10.1148/98.2.329
ISSN1527-1315
AutoresFrederick J. Bonte, Kenneth D. Graham, J. E. Dowdey,
Tópico(s)Radiation Dose and Imaging
ResumoAn interference pattern which distorted the representation of a parallel-line phantom containing a radionuclide was observed during a study of the quality of the image produced by a commercial Anger camera equipped with “diverging” and other multichannel collimators. Discontinuities occurred in the individual phantom line images, forming a Moiré pattern. The effect was maximal close to the face of the collimator and disappeared at a distance from it. Further study has shown this to be a property of all camera collimators with thick septa between the linear arrays of collimator holes.
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