10 Important Points About Computed Tomography
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1. CT invented in 1972 by Hounsfield
2. Helical scanners are the newest CT phenom
3. CT minimizes motion artifacts
4. Collimation of a CT image will regulate its focal length 1-13 mm
5. There may be up to 2400 image receptors around a patient in a CT scanner.
6. CT measured in Hounsfield Units (HU)
7. Cortical bone window = Greater than +1000 HU’s
8. CT soft tissue contrast is 10x’s better than xray films
9. CT yields 3D anatomy images.
10. Star burst affect is a typical artifact of CT imaging.
Category: Radiology Notes
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