Document Detail

Partial ring artifact on cardiac CT: image presentation and clinical implication.
MedLine Citation:
PMID:  21503707     Owner:  NLM     Status:  Publisher    
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.
Hsin-Yu Tsai; Min-Chi Chen; I-Chen Tsai; Clayton Chi-Chang Chen
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-4-19
Journal Detail:
Title:  The international journal of cardiovascular imaging     Volume:  -     ISSN:  1875-8312     ISO Abbreviation:  -     Publication Date:  2011 Apr 
Date Detail:
Created Date:  2011-4-19     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100969716     Medline TA:  Int J Cardiovasc Imaging     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Department of Radiology, Taichung Veterans General Hospital, No. 160, Sec. 3, Taichung Harbor Road, Taichung, 407, Taiwan,
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