Medical Physics International
نویسندگان
چکیده
Computed tomography (CT) is a well stablished imaging technique that is used worldwide for diagnosis and treatment planning. The purpose of this review is to describe the most notable technological advances in the last decade, with a special focus on their impact in CT dose optimization, that is, achieving the same diagnostic image quality at a reduced radiation dose. The review describes main components of a CT system such as x-ray tubes, detectors, shape filters and collimators; as well as the control of key variables such as the tube current and tube potential. In addition, technological advances in iterative reconstruction and specific applications such as cardiac CT, ultra-fast scanning with dual-source CT, and dual-energy CT, are also presented. While the some topics discussed in this review could be generalized to all modern CT scanners, many features are specific for CT systems manufactured by Siemens Healthcare and thus might not be available through other manufacturers. Keywords— Computed Tomography, radiation dose reduction, image quality, radiation dose optimization.
منابع مشابه
Proceedings of the First MEFOMP International Conference of Medical Physics: November 2-4, 2011, Shiraz, Iran
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