Institute of Diagnostic and Interventional Radiology, Pediatric Radiology and Neuroradiology, Rostock University Medical Center, Rostock, Germany.
Radiology, German Cancer Research Centre, Heidelberg, Germany.
Rofo. 2021 Jul;193(7):787-796. doi: 10.1055/a-1324-4010. Epub 2020 Dec 21.
Multiparametric magnetic resonance imaging (MRI) of the prostate plays a central role in the diagnosis of patients with suspected prostate cancer. The increasing distribution and application of the guideline for the standardization of image acquisition, evaluation, and reporting (Prostate Imaging - Reporting and Data System, PI-RADS), which was updated in 2019 to version 2.1, contributes to the success of the technique.
The most important updates of PI-RADS version 2.1 presented in 2019 compared to the previous version PI-RADS 2.0 are highlighted and interpreted with regard to their clinical implications.
PI-RADS version 2.1 aims to simplify the application of the scoring scheme without changing the basic concept of dominant sequences (DWI in the peripheral zone, T2 in the transition zone). Of particular importance are the increasing role of diffusion-weighted imaging in the transition zone, the now mandatory high b-value of at least 1400 s/mm, and new information on the assessment of the central zone and the anterior fibromuscular stroma.
PI-RADS version 2.1 published in 2019 addresses a number of changes to the previous version, including both the examination technique and image interpretation. Prospective clinical studies have yet to prove the extent to which the goals of reducing interreader variability and increasing the detection rate in the transition zone will be achieved.
· The new PI-RADS version 2.1. includes changes regarding image interpretation and examination technique. · The role of diffusion-weighted imaging is strengthened in the transition zone. · An ultra-high b-value of at least 1400 s/mm2 is mandatory according to PI-RADS 2.1. · Biparametric MRI is not recommended for general application.
· Beyer T, Schlemmer H, Weber M et al. PI-RADS 2.1 - Image Interpretation: The Most Important Updates and Their Clinical Implications. Fortschr Röntgenstr 2021; 193: 787 - 795.
前列腺多参数磁共振成像（MRI）在疑似前列腺癌患者的诊断中起着核心作用。不断增加的前列腺影像报告和数据系统（PI-RADS）指南的分布和应用，该指南于 2019 年更新为第 2.1 版，有助于该技术的成功。
本文强调并解释了 2019 年与之前的 PI-RADS 2.0 版本相比，PI-RADS 第 2.1 版最重要的更新，并结合其临床意义进行了解读。
PI-RADS 第 2.1 版的目的是简化评分方案的应用，而不改变主要序列（外周带的弥散加权成像，移行带的 T2）的基本概念。特别重要的是弥散加权成像在移行带中的作用越来越大，现在必须使用至少 1400 s/mm 的高 b 值，以及中央带和前纤维肌肉基质评估的新信息。
2019 年发布的 PI-RADS 第 2.1 版针对前一版本进行了多项更改，包括检查技术和图像解释。前瞻性临床研究仍需证明，减少读者间变异性和提高移行带检出率的目标在多大程度上得以实现。
·新的 PI-RADS 第 2.1 版包括图像解释和检查技术方面的更改。·弥散加权成像在外周带中的作用得到加强。·根据 PI-RADS 2.1，必须使用至少 1400 s/mm 的超高 b 值。·双参数 MRI 不推荐用于一般应用。
Zotero 插件