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An evaluation of cardiac uniformity, contrast, and SNR with dual-head 180° and triple-head 360° SPECT scans

Publication ,  Journal Article
Chen, M; Jaszczak, RJ; Bowsher, JE; Gilland, DR
Published in: IEEE Transactions on Nuclear Science
August 1, 2001

An experimental phantom study was performed to evaluate cardiac uniformity, contrast, and signal-to-noise ratio for two clinical cardiac SPECT imaging protocols: adjacent dual-head 180° and triple-head 360° scans. One head of a SPECT camera was used to acquire 180° and 360° projections with different times per step to simulate the clinical case where dual-head 180° and triple-head 360° each takes a total of 20 min. Scans were acquired with no lesion, anterior lesion, and posterior lesion in the myocardium. Maximum a posteriori reconstruction was done by an iterative coordinate descent algorithm using a quadratic convex prior. The L-curve method was used to obtain the prior strength. Some investigation was done on obtaining the L-curve and on the ways to fit the L-curve and to get the corner point. Images both with attenuation and scatter correction (ASC) and without ASC were compared. The 180° scan shows an intensity decrease in anterior apical and posterior basal regions. The 360° scan shows an intensity decrease in the posterior wall. For the anterior lesion, the 180° scan has slightly better contrast, while for the posterior lesion, the 360° scan has slightly better contrast. The difference between the 180° and 360° scans is subtle, and the comparison results depend on the lesion position and the view angle of the heart. A receiver operating characteristic study of 180° versus 360° acquisition designed based on these characterizations of contrast, uniformity, and noise will be necessary to evaluate overall performance.

Duke Scholars

Published In

IEEE Transactions on Nuclear Science

DOI

ISSN

0018-9499

Publication Date

August 1, 2001

Volume

48

Issue

4 II

Start / End Page

1428 / 1434

Related Subject Headings

  • Nuclear & Particles Physics
  • 5106 Nuclear and plasma physics
  • 0903 Biomedical Engineering
  • 0299 Other Physical Sciences
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
 

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Chen, M., Jaszczak, R. J., Bowsher, J. E., & Gilland, D. R. (2001). An evaluation of cardiac uniformity, contrast, and SNR with dual-head 180° and triple-head 360° SPECT scans. IEEE Transactions on Nuclear Science, 48(4 II), 1428–1434. https://doi.org/10.1109/23.958373
Chen, M., R. J. Jaszczak, J. E. Bowsher, and D. R. Gilland. “An evaluation of cardiac uniformity, contrast, and SNR with dual-head 180° and triple-head 360° SPECT scans.” IEEE Transactions on Nuclear Science 48, no. 4 II (August 1, 2001): 1428–34. https://doi.org/10.1109/23.958373.
Chen M, Jaszczak RJ, Bowsher JE, Gilland DR. An evaluation of cardiac uniformity, contrast, and SNR with dual-head 180° and triple-head 360° SPECT scans. IEEE Transactions on Nuclear Science. 2001 Aug 1;48(4 II):1428–34.
Chen, M., et al. “An evaluation of cardiac uniformity, contrast, and SNR with dual-head 180° and triple-head 360° SPECT scans.” IEEE Transactions on Nuclear Science, vol. 48, no. 4 II, Aug. 2001, pp. 1428–34. Scopus, doi:10.1109/23.958373.
Chen M, Jaszczak RJ, Bowsher JE, Gilland DR. An evaluation of cardiac uniformity, contrast, and SNR with dual-head 180° and triple-head 360° SPECT scans. IEEE Transactions on Nuclear Science. 2001 Aug 1;48(4 II):1428–1434.

Published In

IEEE Transactions on Nuclear Science

DOI

ISSN

0018-9499

Publication Date

August 1, 2001

Volume

48

Issue

4 II

Start / End Page

1428 / 1434

Related Subject Headings

  • Nuclear & Particles Physics
  • 5106 Nuclear and plasma physics
  • 0903 Biomedical Engineering
  • 0299 Other Physical Sciences
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics