Yang Ting, Li Ying, Ye Zheng, Yao Shan, Li Qing, Yuan Yuan, Song Bin
Department of Radiology, West China Hospital, Sichuan University, Chengdu, China.
MR Collaborations, Siemens Healthcare, Shanghai, China.
Acad Radiol. 2023 Mar;30(3):470-482. doi: 10.1016/j.acra.2022.07.018. Epub 2022 Aug 27.
Diffusion weighted imaging (DWI) serves as one of the most important functional magnetic resonance imaging techniques in abdominal and pelvic imaging. It is designed to reflect the diffusion of water molecules and is particularly sensitive to the malignancies. Yet, the limitations of image distortion and artifacts in single-shot DWI may hamper its widespread use in clinical practice. With recent technical advances in DWI, such as simultaneous multi-slice excitation, computed or reduced field-of-view techniques, as well as advanced shimming methods, it is possible to achieve shorter acquisition time, better image quality, and higher robustness in abdominopelvic DWI. This review discussed the recent advances of each DWI approach, and highlighted its future perspectives in abdominal and pelvic imaging, hoping to familiarize physicians and radiologists with the technical improvements in this field and provide future research directions.
扩散加权成像（DWI）是腹部和盆腔成像中最重要的功能磁共振成像技术之一。它旨在反映水分子的扩散情况，对恶性肿瘤特别敏感。然而，单次激发DWI中图像失真和伪影的局限性可能会阻碍其在临床实践中的广泛应用。随着DWI技术的最新进展，如同时多 slice 激发、计算或缩小视野技术以及先进的匀场方法，在腹部盆腔DWI中实现更短的采集时间、更好的图像质量和更高的稳健性成为可能。本综述讨论了每种DWI方法的最新进展，并强调了其在腹部和盆腔成像中的未来前景，希望使医生和放射科医生熟悉该领域的技术改进并提供未来的研究方向。
