Detection of the intimal tear in aortic dissection and ulcer-like projection in intramural hematoma: usefulness of full-phase retrospective ECG-gated CT angiography

Satoru Yanagaki, Takuya Ueda, Atsuro Masuda, Hideki Ota, Yuta Onaka, Masatoshi Kojima, Takashi Hattori, Wahei Mihara, Kei Takase

Research output: Contribution to journalArticlepeer-review

Abstract

Purpose: To compare the accuracy of non-electrocardiogram (ECG)-gated CT angiography (CTA), single-diastolic-phase ECG-gated CTA, and full-phase ECG-gated CTA in detecting the intimal tear (IT) in aortic dissection (AD) and ulcer-like projection (ULP) in intramural hematoma (IMH). Materials and methods: A total of 81 consecutive patients with AD and IMH of the thoracic aorta were included in this single-center retrospective study. Non-ECG-gated CTA, single-diastolic-phase ECG-gated CTA, and full-phase ECG-gated CTA were used to detect the presence of the IT and ULP in thoracic aortic regions including the ascending aorta, aortic arch, and proximal and distal descending aorta. Results: The accuracy of detecting the IT and ULP was significantly greater using full-phase ECG-gated CTA (88% [95% CI: 100%, 75%]) than non-ECG-gated CTA (72% [95% CI: 90%, 54%], P = 0.001) and single-diastolic-phase ECG-gated CTA (76% [95% CI: 93%, 60%], P = 0.008). Conclusion: Full-phase ECG-gated CTA is more accurate in detecting the IT in AD and ULP in IMH, than non-ECG-gated CTA and single-diastolic-phase ECG-gated CTA.

Original languageEnglish
Pages (from-to)1036-1045
Number of pages10
JournalJapanese Journal of Radiology
Volume38
Issue number11
DOIs
Publication statusPublished - 2020 Nov 1
Externally publishedYes

Keywords

  • Aortic dissection
  • Intimal tear
  • Intramural hematoma
  • Retrospective ECG-gated CTA
  • Ulcer-like projection

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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