Detectability of the artery of Adamkiewicz on computed tomography angiography of the aorta by using ultra-high-resolution computed tomography

Takuya Hino, Takeshi Kamitani, Koji Sagiyama, Yuzo Yamasaki, Yuko Matsuura, Soichiro Tsutsui, Yuki Sakai, Tadashi Furuyama, Hidetake Yabuuchi

Research output: Contribution to journalArticle

Abstract

Purpose: To evaluate the detectability of AKA on aortic computed tomography angiography (CTA) using ultra-high-resolution computed tomography (UHRCT). Materials and methods: Twenty-eight patients were enrolled. They underwent aortic CTA with UHRCT (UHRCTA) and had previously undergone aortic conventional CTA (CCTA). The injection protocol of UHRCTA was the same as that of CCTA. The bolus tracking technique was used. UHRCTA images were reconstructed with adaptive iterative dose reduction (strong) and with forward-projected model-based iterative reconstruction solution. The matrix size and slice thickness on UHRCT were 1024 and 0.25 mm, respectively, and those on conventional CT were 512 and 0.5 or 0.67 mm, respectively. The UHRCTA and CCTA images were visually compared by using four scales. A score of 4 or 3 indicated that the AKA was assessable. In this instance, the contrast-to-noise ratios of each UHRCTA were measured. The exposure dose and signal-to-noise ratios were also investigated. Results: The AKA visualization scores obtained with UHRCTA with forward-projected model-based iterative reconstruction solution were significantly higher than those with adaptive iterative dose reduction (p = 0.018) and CCTA (p = 0.0024). Conclusion: UHRCT can contribute to the better visualization of the AKA on aortic CTA.

Original languageEnglish
Pages (from-to)658-665
Number of pages8
JournalJapanese Journal of Radiology
Volume38
Issue number7
DOIs
Publication statusPublished - Jul 1 2020

All Science Journal Classification (ASJC) codes

  • Radiology Nuclear Medicine and imaging

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