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- Title
Partial ring artifact on cardiac CT: image presentation and clinical implication.
- Authors
Tsai, Hsin-Yu; Chen, Min-Chi; Tsai, I-Chen; Chen, Clayton
- Abstract
In computed tomography (CT), the term 'artifact' is applied to any systematic discrepancy between the CT numbers in the reconstructed image and the true attenuation coefficients of the object. A partial ring artifact in cardiac CT has a unique pattern and has not been previously reported in real clinical practice. In this report, we will demonstrate the images and animations of a cardiac CT which is affected by a partial ring artifact due to a broken detector module. The different characteristics of ring artifacts on routine and cardiac CT, and the implications for clinical interpretation will also be described. In summary, when a partial ring artifact is noted incidentally on cardiac CT, we suggest interpreting the images by reviewing reconstructed images from different RR-intervals to avoid unnecessary repeated scans and additional radiation exposure.
- Subjects
CARDIOGRAPHIC tomography; SYSTEMATIC reviews; IMAGE reconstruction; DETECTORS; RADIATION exposure; MEDICAL radiography; MEDICAL imaging systems
- Publication
International Journal of Cardiovascular Imaging, 2011, Vol 27, Issue 5, p689
- ISSN
1569-5794
- Publication type
Article
- DOI
10.1007/s10554-011-9862-x