Incidental extracardiac findings at cardiac CT angiography: comparison of prevalence and clinical significance between precontrast low-dose whole thoracic scan and postcontrast retrospective ECG-gated cardiac scan
- Authors
- Kim, Jin Woo; Kang, Eun-Young; Yong, Hwan Seok; Kim, Yoon Kyung; Woo, Ok Hee; Oh, Yu-Whan; Lee, Ki Yeol; Han, Heon
- Issue Date
- 2009
- Publisher
- SPRINGER
- Keywords
- Cardiac CT angiography; Low-dose CT; Whole thoracic scan; Extra cardiac finding
- Citation
- INTERNATIONAL JOURNAL OF CARDIOVASCULAR IMAGING, v.25, pp.75 - 81
- Indexed
- SCIE
SCOPUS
- Journal Title
- INTERNATIONAL JOURNAL OF CARDIOVASCULAR IMAGING
- Volume
- 25
- Start Page
- 75
- End Page
- 81
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/122135
- DOI
- 10.1007/s10554-008-9417-y
- ISSN
- 1569-5794
- Abstract
- Purpose To compare the prevalence and clinical significance of incidental extracardiac findings at cardiac CT angiography (CCTA) with precontrast low-dose whole thoracic scan (LDCT) and ECG-gated CCTA. Materials and Methods We reviewed 254 patients who underwent CCTA. All participants first underwent LDCT to determine a range for CCTA and to screen unrecognized extracardiac lesions. CCTA was reconstructed with a small field of view of the heart. Clinically significant extracardiac findings were defined as abnormalities requiring further diagnostic work up, therapeutic intervention, or follow-up. Results On LDCT, 285 extracardiac findings were detected in 62.6% patients; on CCTA, 18 findings in 7% patients. Among these, 66 findings in 20.4% patients were considered clinically significant on LDCT, and 4 findings in 1.6% patients on CCTA. Conclusion Clinically significant extracardiac findings are common in patients undergoing CCTA with a considerable number of extracardiac findings being detected only on LDCT. We advise performing whole thorax LDCT prior to CCTA.
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