Diffusion-Weighted MRI for Assessment of Early Cancer Treatment Response

被引:24
作者
Galban, Stefanie [2 ]
Brisset, Jean-Christophe
Rehemtulla, Alnawaz [2 ]
Chenevert, Thomas L.
Ross, Brian D.
Galban, Craig J. [1 ]
机构
[1] Univ Michigan, Dept Radiol, BSRB, Ann Arbor, MI 48109 USA
[2] Univ Michigan, Dept Radiat Oncol, Ann Arbor, MI 48109 USA
关键词
DW-MRI; apparent diffusion coefficient; imaging biomarker; cancer; treatment response; HIGH-GRADE GLIOMA; APPARENT DIFFUSION; MALIGNANT GLIOMA; BRAIN-TUMORS; THERAPEUTIC-EFFICACY; IMAGING BIOMARKER; RECTAL-CARCINOMA; PROSTATE-CANCER; SOLID TUMORS; RESONANCE;
D O I
10.2174/138920110792246627
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Recent clinical practice for the management for cancer patients has begun to change from a statistical "one-size fits all" approach to medicine to more individualized care. Pre-treatment biomarkers (i.e. genetically and histologically based) have a growing role in providing guidance related to the appropriate therapy and likelihood of response; they do not take into account heterogeneity within the tumor mass. Thus, a biomarker which could be utilized to measure actual tumor response early following treatment initiation would provide an important opportunity to evaluate treatment effects on an individual patient basis. Diffusion weighted magnetic resonance imaging (DW-MRI) offers the opportunity to monitor treatment-associated alterations in tumor microenvironment using quantification of changes in tumor water diffusion values as a surrogate imaging biomarker. Results obtained thus far using DW-MRI have shown that changes in tumor diffusion values can be detected early following treatment initiation which correlate with traditional outcome measures. Sensitive imaging biomarkers are providing for the first time a means of assessing 3 dimensional tumor response early in the treatment cycle. This review highlights the development of DW-MRI and its proposed usefulness in the clinical management of cancer patients. The utility of DW-MRI for assessing therapeutic-induced response is further evaluated on tumors residing in the brain, head and neck and bone.
引用
收藏
页码:701 / 708
页数:8
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