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Empirical effects of angular sampling and background content on image quality in dedicated breast SPECT

Publication ,  Journal Article
Perez, KL; Cutler, SJ; Tornai, MP
Published in: IEEE Nuclear Science Symposium Conference Record
January 1, 2007

This study investigates the effects of varying the azimuthal and polar sampling of the acquisition trajectory with the dedicated breast SPECT imaging system developed in our lab. In addition, the frequency quality (density and distribution) of the background is considered. The SPECT system consists of a 16×20cm2 CZT gamma camera with 6.7% FWHM energy resolution at 140keV, which can accommodate fully 3D simple or complex trajectories about a pendant, uncompressed breast. Trajectories used in these studies are vertical axis of rotation, tilted parallel beam and sine wave projected onto a hemisphere. Various geometric and anthropomorphic phantoms containing lesions are imaged to evaluate the effects of sampling and background distributions on signal (lesion) visualization. In general, sufficient counting statistics limit the quality of the image and thus an optimization between the number of projections and the number of detected events is being explored. Reconstructed images of anthropomorphic breast phantoms did not appear to have distortion artifacts in regions inside the breast phantom containing a variety of spatial frequencies, but distortions did appear in some instances in the high frequency outer edge of the phantom in reconstructed images. © 2007 IEEE.

Published In

IEEE Nuclear Science Symposium Conference Record

DOI

ISSN

1095-7863

Publication Date

January 1, 2007

Volume

4

Start / End Page

3065 / 3069
 

Citation

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Perez, K. L., Cutler, S. J., & Tornai, M. P. (2007). Empirical effects of angular sampling and background content on image quality in dedicated breast SPECT. IEEE Nuclear Science Symposium Conference Record, 4, 3065–3069. https://doi.org/10.1109/NSSMIC.2007.4436777
Perez, K. L., S. J. Cutler, and M. P. Tornai. “Empirical effects of angular sampling and background content on image quality in dedicated breast SPECT.” IEEE Nuclear Science Symposium Conference Record 4 (January 1, 2007): 3065–69. https://doi.org/10.1109/NSSMIC.2007.4436777.
Perez KL, Cutler SJ, Tornai MP. Empirical effects of angular sampling and background content on image quality in dedicated breast SPECT. IEEE Nuclear Science Symposium Conference Record. 2007 Jan 1;4:3065–9.
Perez, K. L., et al. “Empirical effects of angular sampling and background content on image quality in dedicated breast SPECT.” IEEE Nuclear Science Symposium Conference Record, vol. 4, Jan. 2007, pp. 3065–69. Scopus, doi:10.1109/NSSMIC.2007.4436777.
Perez KL, Cutler SJ, Tornai MP. Empirical effects of angular sampling and background content on image quality in dedicated breast SPECT. IEEE Nuclear Science Symposium Conference Record. 2007 Jan 1;4:3065–3069.

Published In

IEEE Nuclear Science Symposium Conference Record

DOI

ISSN

1095-7863

Publication Date

January 1, 2007

Volume

4

Start / End Page

3065 / 3069