Visualization of small visceral arteries on abdominal CT angiography using ultra-high-resolution CT scanner

概要

〔目的(Purpose)〕
Purpose： To evaluate the image quality and ability to delineate the small visceral arteries of high-resolution (HR) abdominal CT angiography (CTA) using an ultra-high-resolution computed tomography (UHR CT) scanner.

〔方法ならびに成績(Methods/Results)〕
Methods： Thirty-seven patients were enrolled who underwent abdominal CTA using a UHR CT scanner. The images were reconstructed with a matrix of 1024X 1024 and 0. 25 mm thickness for HR CTA and with a matrix of 512x512 and 0. 5 mm thickness for normal resolution (NR) CTA. Maximum CT value, image quality, and delineation of the small arteries were compared between HR CTA and NR CTA.

Results： HR CTA showed significantly higher maximum CT value, higher image quality, and better delineation of the small arteries than did NR CTA (P < .005).

〔総括(Conclusion)〕
Conclusion： HR CTA using a UHR CT scanner showed higher image quality than NR CTA and enhanced the delineation of visceral arteries.