Dynamic magnetic resonance imaging of tumor perfusion. Approaches and biomedical challenges.

Dynamic magnetic resonance imaging of tumor perfusion. Approaches and biomedical challenges.
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肿瘤灌注的动态磁共振成像。

DOI:
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发表时间:
2004
影响因子:
--
通讯作者:
A. Padhani
A. Padhani
中科院分区:
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文献类型:
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作者:
D. Collins;A. Padhani

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使用小分子量钆螯合物的动态对比增强磁共振成像(DCE-MRI)能够对组织血管进行无创成像表征。根据所使用的技术,可以获得反映组织灌注(血流量、血容量、平均通过时间)、微血管渗透性表面积乘积和细胞外渗漏空间的数据。这些生理过程的见解可以通过检查动力学增强曲线或通过应用复杂的房室建模技术来获得。潜在的临床应用包括筛查恶性疾病、病变表征、监测病变对治疗的反应以及评估残留病变。较新的应用包括统计学、抗血管抗癌药物的药效学评估和治疗效果的预测。为了使动态MRI进入广泛的临床实践,有必要开发标准化的测量方法和可靠的分析方法。这些包括商业设备制造商需要提供快速测量T1弛豫率随时间变化的稳健方法,将动脉输入功能纳入动力学建模过程,允许从各种MRI设备输入的稳健分析软件,以及用于评价异质性的经验证的统计工具。
Dynamic contrast enhanced magnetic resonance imaging (DCE-MRI) using small molecular weight gadolinium chelates enables noninvasive imaging characterization of tissue vascularity. Depending on the technique used, data reflecting tissue perfusion (blood flow, blood volume, mean transit time), microvessel permeability surface area product, and extracellular leakage space can be obtained. Insights into these physiological processes can be obtained from inspection of kinetic enhancement curves or by the application of complex compartmental modeling techniques. Potential clinical applications include screening for malignant disease, lesion characterization, monitoring lesion response to treatment, and assessment of residual disease. Newer applications include prognostication, pharmacodynamic assessments of antivascular anticancer drugs, and predicting efficacy of treatment. For dynamic MRI to enter into widespread clinical practice, it will be necessary to develop standardized approaches to measurement and robust analysis approaches. These include the need for commercial equipment manufacturers to provide robust methods for rapidly measuring time-varying change in T1 relaxation rates, incorporation of arterial input function into kinetic modeling processes, robust analysis software that allows input from a variety of MRI devices, and validated statistical tools for the evaluation of heterogeneity.
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发表时间: 1994-04-01
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神经胶质瘤的回波平面 MR 脑血容量图。
DOI: --
发表时间: 1995
期刊: Acta radiologica (Stockholm, Sweden : 1987)
影响因子: --
作者:
Aronen,HJ;Glass,J;Pardo,FS;Belliveau,JW;Gruber,ML;Buchbinder,BR;Gazit,IE;Linggood,RM;Fischman,AJ;Rosen,BR
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