Abstract
Recent dramatic technological advances in computed tomography (CT) technology allow routine performance of cardiac computed tomography angiography (CCTA) with excellent image quality at modest effective radiation doses (E). Improved z-axis coverage, utilizing scanners with 64, 128, 256, and 320 z-axis detector-rows, decreases “slab artifact,” improves contrast opacification, and allows shorter breath holds – thus further decreasing cardiac motion artifacts and improving over image quality. Improved “true” hardware-dependent temporal resolution, now at roughly 100–175 ms with single source and 75 ms with dual source scanners, decreases artifacts from coronary artery motion. Improved detector technology now yields a maximal spatial resolution on the order of 18.2 line pairs/cm.
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Musani, M.H., Feldmann, E.J. (2015). Introduction to Cardiac Computed Tomography. In: Clinical Pearls in Diagnostic Cardiac Computed Tomographic Angiography. Springer, Cham. https://doi.org/10.1007/978-3-319-08168-7_1
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DOI: https://doi.org/10.1007/978-3-319-08168-7_1
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-08167-0
Online ISBN: 978-3-319-08168-7
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