Scatter and attenuation correction for quantitative myocardial SPECT imaging

Jun Hashimoto, Toshikazu Sammiya, Katsuhiko Ogasawara, Atsushi Kubo, Koichi Ogawa, Takashi Ichihara, Nobutoku Motomura, Hyoji Hasegawa

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

We performed scalier and attenuation compensation in 201Tl myocardial SPECT using the triple-energy-window (TEW) scatter correction method and 99mTc transmission scan (TCT). A dual headed SPECT gamma-camera system equipped with parallel-hole collimators was employed for imaging and a sheet source for TCT was attached to the surface of one of the two detectors. Two imaging protocols, a sequential mode and a simultaneous mode, were examined. In the sequential mode, TCT was performed prior to the administration of the tracer and then ECT was carried out. On the other hand, the injection was followed by a simultaneous transmission emission scan, in the simultaneous mode. Results of phantom studies showed that reconstructed SPECT values of the whole myocardium were almost equal to the true value with errors of less than 5 per cent, and that more homogeneous images were obtained by performing scatter and attenuation correction. We conclude that this correction method was clinically practical and cost effective because it uses parallel-hole collimators and does not require fan-beam collimators which may produce truncation artifacts.

Original languageEnglish
Pages (from-to)1015-1019
Number of pages5
JournalKakuigaku
Volume33
Issue number9
Publication statusPublished - 22-10-1996
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Radiology Nuclear Medicine and imaging

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