Abstract
CT imaging has become a true three-dimensional (3D) modality that allows complete anatomic regions to be imaged within a few seconds at an isotropic spatial resolution of 0.5–0.7 mm. Modern scanners are cone-beam spiral CT scanners rotating at two to three revolutions per second. The improved performance of modern scanners has led to an increased use of CT scanning and, unfortunately, also to an increase in dose. Several issues of dose reduction (at given image quality) are discussed in this chapter. Among the most important are user education and protocol optimization and manufacturer adaptations. Exploiting all possibilities will certainly help to significantly reduce dose and therefore pave the way for scanners with even higher resolution and improved image quality in the future.
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Kachelriess, M. (2011). Principles, Design, and Operation of Multi-slice CT. In: Shreve, P., Townsend, D. (eds) Clinical PET-CT in Radiology. Springer, New York, NY. https://doi.org/10.1007/978-0-387-48902-5_1
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DOI: https://doi.org/10.1007/978-0-387-48902-5_1
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