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High spatial resolution reconstruction technique for SPECT using fan-beam collimator

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3 Author(s)
Ichihara, T. ; Toshiba Nasu Works, Tochigi, Japan ; Nambu, K. ; Motomura, N.

The authors propose an algorithm which directly filters and backprojects the fan-beam data within a limited area close to the fan-beam collimator surface without rebinding into parallel beam geometry. The proposed reconstruction method improves spatial resolution in SPECT (single photon emission computed tomography) for brain studies using fan-beam collimators. When projection image data with a 128×128 matrix are used, this method improves spatial resolution and image quality. This matrix size is suitable for clinical studies with an acquisition time within 20 minutes

Published in:

Nuclear Science Symposium and Medical Imaging Conference, 1992., Conference Record of the 1992 IEEE

Date of Conference:

25-31 Oct 1992

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