Department of Diagnostic and Interventional Radiology, Hoppe-Seyler-Strasse 3, Eberhard Karls University Tuebingen, 72076 Tuebingen, Germany.
MR Applications Predevelopment, Siemens Healthcare GmbH, Erlangen, Germany.
Acad Radiol. 2023 Jan;30(1):93-102. doi: 10.1016/j.acra.2022.03.018. Epub 2022 Apr 22.
To evaluate the clinical performance of a deep learning-accelerated single-breath-hold half-Fourier acquisition single-shot turbo spin echo (HASTE)-sequence for T2-weighted fat-suppressed MRI of the abdomen at 1.5 T and 3 T in comparison to standard T2-weighted fat-suppressed multi-shot turbo spin echo-sequence. A total of 320 patients who underwent a clinically indicated liver MRI at 1.5 T and 3 T between August 2020 and February 2021 were enrolled in this single-center, retrospective study. HASTE and standard sequences were assessed regarding overall and organ-based image quality, noise, contrast, sharpness, artifacts, diagnostic confidence, as well as lesion detectability using a Likert scale ranging from 1 to 4 (4 = best). The number of visible lesions of each organ was counted and the largest diameter of the major lesion was measured. HASTE showed excellent image quality (median 4, interquartile range 3-4), although BLADE (median 4, interquartile range 4-4) was rated significantly higher for overall and organ-based image quality of the adrenal gland (P < .001), contrast (P < 0.001), sharpness (P < 0.001), artifacts (P < 0.001), as well as diagnostic confidence (P < .001). No significant differences were found concerning noise (P = 0.886), organ-based image quality of the liver, pancreas, spleen, and kidneys (P = 0.120-0.366), number and measured diameter of the detected lesions (ICC = 0.972-1.0). Reduction of the aquisition time (TA) was at least 89% for 1.5 T images and 86% for 3 T images. HASTE provided excellent image quality, good diagnostic confidence and lesion detection compared to a standard T2-sequences, allowing an eminent reduction of the acquisition time.
为了评估深度学习加速的单次屏气半傅里叶采集单次激发涡轮自旋回波（HASTE）序列在 1.5T 和 3T 下用于腹部 T2 加权脂肪抑制 MRI 的临床性能，并与标准 T2 加权脂肪抑制多激发涡轮自旋回波序列进行比较。这项单中心回顾性研究共纳入了 2020 年 8 月至 2021 年 2 月期间在 1.5T 和 3T 进行临床指征性肝脏 MRI 检查的 320 名患者。评估了 HASTE 和标准序列的整体和器官基础的图像质量、噪声、对比度、锐利度、伪影、诊断信心，以及使用 1 到 4 分（4 分表示最佳）的李克特量表评估的病变可检测性。对每个器官的可见病变数量进行计数，并测量主要病变的最大直径。HASTE 显示出出色的图像质量（中位数 4，四分位距 3-4），尽管 BLADE（中位数 4，四分位距 4-4）在肾上腺的整体和器官基础的图像质量（P<0.001）、对比度（P<0.001）、锐利度（P<0.001）、伪影（P<0.001）以及诊断信心（P<0.001）方面的评分更高。在噪声（P=0.886）、肝脏、胰腺、脾脏和肾脏的器官基础图像质量（P=0.120-0.366）、检测到的病变数量和测量直径（ICC=0.972-1.0）方面无显著差异。1.5T 图像的采集时间（TA）减少至少 89%，3T 图像的采集时间减少至少 86%。与标准 T2 序列相比，HASTE 提供了出色的图像质量、良好的诊断信心和病变检测，允许显著减少采集时间。
