Small field-of-view dedicated cardiac SPECT systems: impact of projection truncation
نویسندگان
چکیده
منابع مشابه
Validation of attenuation correction using transmission truncation compensation with a small field of view dedicated cardiac SPECT camera system.
BACKGROUND Although attenuation correction (AC) has been successfully applied to large field of view (LFOV) cameras, applicability to small field of view (SFOV) cameras is a concern due to truncation. This study compared perfusion images between a LFOV and SFOV camera with truncation compensation, using the same AC solution. METHODS AND RESULTS Seventy-eight clinically referred patients under...
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In this article, we show that the projection-free, snapshot-based, balanced truncation method can be applied directly to unstable systems. We prove that even for unstable systems, the unmodified balanced proper orthogonal decomposition algorithm theoretically yields a converged transformation that balances the Gramians (including the unstable subspace). We then apply the method to a spatially d...
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ژورنال
عنوان ژورنال: European Journal of Nuclear Medicine and Molecular Imaging
سال: 2009
ISSN: 1619-7070,1619-7089
DOI: 10.1007/s00259-009-1223-9