On modeling.

On modeling.
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DOI:
10.1002/mrm.27101
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发表时间:
2018-06
影响因子:
3.3
通讯作者:
Jespersen SN
Jespersen SN
中科院分区:
医学3区
文献类型:
--
作者:
Novikov DS;Kiselev VG;Jespersen SN

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利用MRI绘制组织微结构图具有很大的前景,可以作为在细胞水平上了解组织组织的非侵入性窗口。自20世纪70年代末起源于扩散核磁共振领域以来,该领域的出版物数量呈指数级增长;同时,基于模型的方法也越来越多地被纳入先进的磁共振成像采集和重建技术。然而,经过大约20年的智力和财政投入,微结构图谱尚未找到一个被普遍接受的临床应用。在这里,我们认为临床翻译进展缓慢可能意味着尚未解决的基本问题。我们概述了这些问题和相关的实践陷阱,并回顾了开发和验证组织微结构模型的策略,以引发关于如何弥合我们的科学抱负和临床现实之间的差距的讨论。我们主张重新调整我们社区的努力,将重点更系统地放在基础研究上,目的是确定影响测量的磁共振信号的相关自由度。这样的关注对于实现非侵入性、三维活体微结构映射的真正革命性潜力是必不可少的。
Mapping tissue microstructure with MRI holds great promise as a noninvasive window into tissue organization at the cellular level. Having originated within the realm of diffusion NMR in the late 1970s, this field is experiencing an exponential growth in the number of publications; at the same time, model-based approaches are also increasingly incorporated into advanced MRI acquisition and reconstruction techniques. However, after about two decades of intellectual and financial investment, microstructural mapping has yet to find a single commonly accepted clinical application. Here we suggest that slow progress in clinical translation may signify unresolved fundamental problems. We outline such problems and related practical pitfalls, and review strategies for developing and validating tissue microstructure models, to provoke a discussion on how to bridge the gap between our scientific aspirations and the clinical reality. We argue for recalibrating the efforts of our community towards a more systematic focus on fundamental research aimed at identifying relevant degrees of freedom affecting the measured MR signal. Such a focus is essential for realizing the truly revolutionary potential of noninvasive, three-dimensional in vivo microstructural mapping.
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