动态对比增强磁共振成像(DCE-MRI)衍生的肾脏灌注和滤过:基本概念。
Dynamic Contrast Enhancement (DCE) MRI-Derived Renal Perfusion and Filtration: Basic Concepts.
机构信息
Department of Clinical Medicine - Comparative Medicine Lab, Aarhus University, Aarhus, Denmark.
University of Campania "Luigi Vanvitelli", Napoli, Italy.
出版信息
Methods Mol Biol. 2021;2216:205-227. doi: 10.1007/978-1-0716-0978-1_12.
Dynamic contrast-enhanced (DCE) MRI monitors the transit of contrast agents, typically gadolinium chelates, through the intrarenal regions, the renal cortex, the medulla, and the collecting system. In this way, DCE-MRI reveals the renal uptake and excretion of the contrast agent. An optimal DCE-MRI acquisition protocol involves finding a good compromise between whole-kidney coverage (i.e., 3D imaging), spatial and temporal resolution, and contrast resolution. By analyzing the enhancement of the renal tissues as a function of time, one can determine indirect measures of clinically important single-kidney parameters as the renal blood flow, glomerular filtration rate, and intrarenal blood volumes. Gadolinium-containing contrast agents may be nephrotoxic in patients suffering from severe renal dysfunction, but otherwise DCE-MRI is clearly useful for diagnosis of renal functions and for assessing treatment response and posttransplant rejection.Here we introduce the concept of renal DCE-MRI, describe the existing methods, and provide an overview of preclinical DCE-MRI applications to illustrate the utility of this technique to measure renal perfusion and glomerular filtration rate in animal models.This publication is based upon work from the COST Action PARENCHIMA, a community-driven network funded by the European Cooperation in Science and Technology (COST) program of the European Union, which aims to improve the reproducibility and standardization of renal MRI biomarkers. This introduction is complemented by two separate publications describing the experimental procedure and data analysis.
动态对比增强 (DCE) MRI 监测对比剂(通常为钆螯合物)在肾脏区域、肾皮质、髓质和收集系统中的传输。通过这种方式,DCE-MRI 揭示了对比剂的肾脏摄取和排泄。一个最佳的 DCE-MRI 采集方案涉及在全肾覆盖范围(即 3D 成像)、空间和时间分辨率以及对比分辨率之间找到良好的折衷。通过分析肾组织的增强作为时间的函数,可以确定临床上重要的单肾参数的间接测量值,如肾血流量、肾小球滤过率和肾内血容量。含有钆的对比剂在患有严重肾功能障碍的患者中可能具有肾毒性,但除此之外,DCE-MRI 显然对诊断肾功能以及评估治疗反应和移植后排斥反应很有用。在这里,我们介绍了肾脏 DCE-MRI 的概念,描述了现有的方法,并提供了临床前 DCE-MRI 应用的概述,以说明该技术在测量动物模型中的肾脏灌注和肾小球滤过率方面的应用。本出版物基于 COST 行动 PARENCHIMA 的工作,这是一个由欧洲合作科学技术(COST)计划资助的社区驱动网络,旨在提高肾脏 MRI 生物标志物的可重复性和标准化。本介绍由两篇单独的出版物补充,描述了实验程序和数据分析。
相似文献
Methods Mol Biol. 2021
Methods Mol Biol. 2021
Methods Mol Biol. 2021
Methods Mol Biol. 2021
引用本文的文献
Nat Rev Nephrol. 2025-4-23
J Clin Med. 2023-7-11
本文引用的文献
Am J Physiol Renal Physiol. 2018-12-5
Chem Rev. 2018-10-16
Magn Reson Med. 2018-9-14
Tomography. 2015-9
Magn Reson Med. 2017-10-16
Magn Reson Med. 2017-3