我们能走多快：简化的前列腺磁共振协议。
How Fast Can We Go: Abbreviated Prostate MR Protocols.
机构信息
University of Alabama at Birmingham School of Medicine, 1720 2nd Ave S, Birmingham, AL, 35249, USA.
Department of Radiology, University of Alabama at Birmingham, 619 19th Street S, JT N374, Birmingham, AL, 35249, USA.
出版信息
Curr Urol Rep. 2020 Nov 2;21(12):59. doi: 10.1007/s11934-020-01008-8.
PURPOSE OF REVIEW
Multiparametric MRI (mpMRI), composed of T2WI, DWI, and DCE sequences, is effective in identifying prostate cancer (PCa), but length and cost preclude its application as a PCa screening tool. Here we review abbreviated MRI protocols that shorten or omit conventional mpMRI components to reduce scan time and expense without forgoing diagnostic accuracy.
RECENT FINDINGS
The DCE sequence, which plays a limited diagnostic role in PI-RADS, is eliminated in variations of the biparametric MRI (bpMRI). T2WI, the lengthiest sequence, is truncated by only acquiring the axial plane or utilizing 3D acquisition with subsequent 2D reconstruction. DW-EPI further accelerates DWI acquisition. The fastest protocol described to date consists of just DW-EPI and axial-only 2D T2WI and runs less than 5 min. Abbreviated protocols can mitigate scan expense and increase scan access, allowing prostate MRI to become an efficient PCa screening tool.
目的综述
多参数 MRI（mpMRI）由 T2WI、DWI 和 DCE 序列组成，可有效识别前列腺癌（PCa），但因其检查时间长且费用高，无法作为 PCa 的筛查工具。本文综述了缩短或省略常规 mpMRI 成分的简化 MRI 方案，在不影响诊断准确性的前提下，可减少扫描时间和费用。
最新发现
在 PI-RADS 中，DCE 序列的诊断作用有限，在双参数 MRI（bpMRI）的各种变化中已被消除。T2WI 是最长的序列，仅采集轴位或使用三维采集后进行二维重建即可截断。DW-EPI 进一步加速了 DWI 采集。目前描述的最快方案仅包括 DW-EPI 和轴位二维 T2WI，扫描时间不足 5 分钟。简化方案可降低扫描费用并增加扫描机会，使前列腺 MRI 成为有效的 PCa 筛查工具。
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