MEDRADSC 3DA3 Lecture Notes - Lecture 7: Ct Scan, Image Noise, Cardiology

• School: McMaster University
• Department: Medical Radiation Sciences
• Course: MEDRADSC 3DA3
• Professor: Lyndsay Simmons

Document Summary

4. 4 million ct exams (5. 61 million as of 2017) 1. 7 million mr exams (1. 86 million as of 2017) 510 ct scanners - 561million as of 2017. In canada, the rate for ct scans - 126 per 1000 ppl vs 265 in the us. Performing a large # of scans on a small # of scanners. 64 slice ct system still common in canada. 4 major ct manufacturers offer 64-slice ct system: 64 slice = 1 million to purchase & install, 256 = 2 million to purchase & install, 320 = 2. 5 million to purchase & install. Toshiba has the smallest # of detector elements - offers true isotropic imaging. Siemens uses a technology using flying focal spot. Philips uses a technology called beat-to-beat technology - may be beneficial in cardiac. Its advantages have been seen mainly in cardiac scanning. Ge claims that the vct can image the heart in 5 beats with tr of 43 ms.