Abstract
CT angiography is a minimally invasive method in the evaluation of the arterial system when scanning is conducted in a properly timed manner with rapid bolus injection of intravenous contrast medium. Conventional helical CT scanners with a single-detector system (single-detector helical CT, SDCT) provided a volume data set that was able to visualize the vasculature from arbitrary directions using multi-planar reformation (MPR) and could be transferred to 3D angiographic models. Nevertheless, there was a trade-off between the scan range and the spatial resolution along the longitudinal axis (z-axis). All helical scans were performed with a pitch lower than 2, because higher pitch values resulted in unacceptable longitudinal spatial resolution and image distance. The limited coverage and tube current available for helical acquisitions were recognized as a limitation of CT angiography using SDCT.
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© 2002 Springer-Verlag Berlin Heidelberg
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Nakayama, Y., Yamashita, Y., Takahashi, M. (2002). CT Angiography of the Aorta and Its Major Branches with Use of MDCT. In: Reiser, M.F., Takahashi, M., Modic, M., Bruening, R. (eds) Multislice CT. Medical Radiology. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-59441-0_21
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DOI: https://doi.org/10.1007/978-3-642-59441-0_21
Publisher Name: Springer, Berlin, Heidelberg
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