树木中 发表于 2025-3-23 11:49:07
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https://doi.org/10.1007/978-3-322-82270-3f perforation at CTC is virtually zero. Screening CTC versus optical colonoscopy is discussed. Some associated risks of optical colonoscopy are discussed. Imaging examples of perforations due to colonoscopy are presented. This introductory chapter serves as a link to the other chapters in this guide.策略 发表于 2025-3-23 22:20:40
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Principles of Radiation Dose in Computed Tomography and Computed Tomography Colonography, the scan widths that the scanners had when the CTDI was introduced; this potentially makes the CTDI an inaccurate dose measure and correction factors have to be applied. The concepts of effective dose and diagnostic reference levels (DRLs) are introduced.OREX 发表于 2025-3-24 15:04:30
Polyps,to highlight the importance of accurate polyp measurement. There is a critical threshold between a diminutive polyp at 5 mm and a small polyp at 6 mm, as well as between a small polyp at 9 mm, and an advanced adenoma at 10 mm. Non-neoplastic mucosal lesions, and submucosal lesions are covered with some examples.Aqueous-Humor 发表于 2025-3-24 20:22:04
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