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Consensus-based technical recommendations for clinical translation of renal diffusion-weighted MRI.
Magnetic Resonance Materials in Physics Biology and Medicine ( IF 2.3 ) Pub Date : 2019-11-01 , DOI: 10.1007/s10334-019-00790-y
Alexandra Ljimani 1 , Anna Caroli 2 , Christoffer Laustsen 3 , Susan Francis 4 , Iosif Alexandru Mendichovszky 5 , Octavia Bane 6 , Fabio Nery 7 , Kanishka Sharma 8 , Andreas Pohlmann 9 , Ilona A Dekkers 10 , Jean-Paul Vallee 11 , Katja Derlin 12 , Mike Notohamiprodjo 13, 14 , Ruth P Lim 15 , Stefano Palmucci 16 , Suraj D Serai 17 , Joao Periquito 9 , Zhen Jane Wang 18 , Martijn Froeling 19 , Harriet C Thoeny 20 , Pottumarthi Prasad 21 , Moritz Schneider 22, 23 , Thoralf Niendorf 9 , Pim Pullens 24, 25 , Steven Sourbron 8 , Eric E Sigmund 26
Affiliation  

OBJECTIVES Standardization is an important milestone in the validation of DWI-based parameters as imaging biomarkers for renal disease. Here, we propose technical recommendations on three variants of renal DWI, monoexponential DWI, IVIM and DTI, as well as associated MRI biomarkers (ADC, D, D*, f, FA and MD) to aid ongoing international efforts on methodological harmonization. MATERIALS AND METHODS Reported DWI biomarkers from 194 prior renal DWI studies were extracted and Pearson correlations between diffusion biomarkers and protocol parameters were computed. Based on the literature review, surveys were designed for the consensus building. Survey data were collected via Delphi consensus process on renal DWI preparation, acquisition, analysis, and reporting. Consensus was defined as ≥ 75% agreement. RESULTS Correlations were observed between reported diffusion biomarkers and protocol parameters. Out of 87 survey questions, 57 achieved consensus resolution, while many of the remaining questions were resolved by preference (65-74% agreement). Summary of the literature and survey data as well as recommendations for the preparation, acquisition, processing and reporting of renal DWI were provided. DISCUSSION The consensus-based technical recommendations for renal DWI aim to facilitate inter-site harmonization and increase clinical impact of the technique on a larger scale by setting a framework for acquisition protocols for future renal DWI studies. We anticipate an iterative process with continuous updating of the recommendations according to progress in the field.

中文翻译:

基于共识的肾弥散加权MRI临床翻译技术建议。

目的标准化是验证基于DWI的参数作为肾脏疾病成像生物标志物的重要里程碑。在这里,我们提出关于肾脏DWI的三种变体,单指数DWI,IVIM和DTI以及相关的MRI生物标记物(ADC,D,D *,f,FA和MD)的技术建议,以帮助正在进行的国际方法协调。材料与方法从194例先前的肾脏D​​WI研究中报告的DWI生物标记物被提取出来,并计算扩散生物标记物与方案参数之间的Pearson相关性。基于文献综述,调查旨在达成共识。通过Delphi共识过程收集有关肾脏DWI制备,采集,分析和报告的调查数据。共识定义为≥75%一致。结果观察到报道的扩散生物标志物和方案参数之间的相关性。在87个调查问题中,有57个问题达成了共识,而其余许多问题则通过优先解决(65-74%同意)。提供了文献和调查数据的摘要,以及有关肾脏DWI的制备,获取,加工和报告的建议。讨论针对肾脏DWI的基于共识的技术建议旨在通过为将来的肾脏DWI研究建立采集协议的框架,促进站点间的协调并在更大范围内扩大该技术的临床影响。我们期望根据该领域的进展,不断进行建议更新的迭代过程。57个解决方案达成了共识,而剩余的许多问题则通过优先解决(65-74%同意)。提供了文献和调查数据的摘要,以及有关肾脏DWI的制备,获取,加工和报告的建议。讨论针对肾脏DWI的基于共识的技术建议旨在通过为将来的肾脏DWI研究建立采集协议的框架,促进站点间的协调并在更大范围内增加该技术的临床影响。我们期望根据该领域的进展,不断进行建议更新的迭代过程。57个解决方案达成了共识,而剩余的许多问题则通过优先解决(65-74%同意)。提供了文献和调查数据的摘要,以及有关肾脏DWI的制备,获取,加工和报告的建议。讨论针对肾脏DWI的基于共识的技术建议旨在通过为将来的肾脏DWI研究建立采集协议的框架,促进站点间的协调并在更大范围内增加该技术的临床影响。我们期望根据该领域的进展,不断进行建议更新的迭代过程。提供了文献和调查数据的摘要,以及有关肾脏DWI的制备,获取,加工和报告的建议。讨论针对肾脏DWI的基于共识的技术建议旨在通过为将来的肾脏DWI研究建立采集协议的框架,促进站点间的协调并在更大范围内扩大该技术的临床影响。我们期望根据该领域的进展,不断进行建议更新的迭代过程。提供了文献和调查数据的摘要,以及有关肾脏DWI的制备,获取,加工和报告的建议。讨论针对肾脏DWI的基于共识的技术建议旨在通过为将来的肾脏DWI研究建立采集协议的框架,促进站点间的协调并在更大范围内增加该技术的临床影响。我们期望根据该领域的进展,不断进行建议更新的迭代过程。
更新日期:2019-11-01
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