MEDRADSC 3DA3 Lecture 7: Applications and Interventional
13 Mar 2018
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Document Summary
In 2012 canadians underwent: 4. 4 million ct exams, 1. 7 million mri exams, 308 mri scanners, 510 ct scanners, these number expanding rapidly need trained technologists. In canada the rate for ct scans 126/1000 people vs 265/1000 in the us. 64 slice ct system-- still common in canada: all four major ct manufacturers offer 64-slice ct system, ge lightspeed vct, philips brilliance ct 40, siemens sensation 64, toshiba aquilion 64. Siemens sensation 64: double sampling improves z-axis resolution (along the length of the patient, sensation 64 has a standard maximum gantry rotation speed of 0. 37s and a 0. 33s option. Isotropic data sets also greatly improve the quality of mpr and 3-d reconstructions: can angle- other (cid:373)odalities (cid:272)a(cid:374)"t tilt o(cid:374) heli(cid:272)al. With this capability advancement can be expected in ct examinations for the brain, heart and liver. Key difference: high-speed volume reconstruction: a new volume reconstruction method is employed in which the entire scan volume is reconstructed at one time.
