Department of Diagnostic and Interventional Radiology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan.
Division of Radiology, Department of Medical Technology, Osaka University Hospital, Suita, Japan.
Jpn J Radiol. 2021 Sep;39(9):889-897. doi: 10.1007/s11604-021-01124-6. Epub 2021 May 4.
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.
Thirty-seven patients were enrolled who underwent abdominal CTA using a UHR CT scanner. The images were reconstructed with a matrix of 1024 × 1024 and 0.25 mm thickness for HR CTA and with a matrix of 512 × 512 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.
HR CTA showed significantly higher maximum CT value, higher image quality, and better delineation of the small arteries than did NR CTA (P < .005).
HR CTA using a UHR CT scanner showed higher image quality than NR CTA and enhanced the delineation of visceral arteries.
利用超高分辨率计算机断层扫描（UHR CT）评估高分辨率（HR）腹部 CT 血管造影（CTA）的图像质量和显示小内脏动脉的能力。
本研究纳入 37 例行 UHR CT 腹部 CTA 检查的患者。使用矩阵为 1024×1024、层厚为 0.25 mm 的矩阵进行 HR CTA 重建，使用矩阵为 512×512、层厚为 0.5 mm 的矩阵进行常规分辨率（NR）CTA 重建。比较 HR CTA 和 NR CTA 的最大 CT 值、图像质量和小动脉的显示情况。
HR CTA 显示的最大 CT 值、图像质量和小动脉的显示情况均明显优于 NR CTA（P<0.005）。
UHR CT 扫描仪的 HR CTA 比 NR CTA 具有更高的图像质量，增强了内脏动脉的显示。
