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Dynamic Contrast-Enhanced MRI in Oncology Drug Development

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Angiogenesis, long recognized as a key factor in tumor growth and metastasis, has been the target of new anticancer treatment paradigms. Development of antiangiogenesis drugs is challenging, mainly due to the difficulty of determining the correct dosage and the time required to observe a clinical effect. In the past decade, imaging has shown potential to answer these questions and accelerate the drug development process by providing functional, morphological, and even molecular characterization. In this review, we describe existing challenges to modern drug development and the potential of imaging biomarkers to monitor drug bioactivity and establish early response of drug efficacy. Dynamic contrastenhanced magnetic resonance imaging (DCE-MRI), particularly attractive for its non-invasiveness and high spatial resolution, has been useful for measuring properties of tumor microvasculature. The general methodology of DCE-MRI is described, in addition to measurable hemodynamic parameters compared to other imaging modalities. Experience with DCE-MRI in antiangiogenesis cancer therapy and results from correlative studies are examined. Current challenges for DCE-MRI, especially in relation to the required sensitivity and reproducibility, are highlighted. We conclude with an outlook on the future of DCE-MRI, including its role in the emerging field of imaging molecular markers of angiogenesis for target-specific therapy.





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Keywords: Oncology; angiogenesis; antiangiogenic cancer therapy; drug development; dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI); imaging molecular biomarkers

Document Type: Research Article

Publication date: May 1, 2007

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  • Current Clinical Pharmacology publishes frontier reviews on all the latest advances in clinical pharmacology. The journal's aim is to publish the highest quality review articles in the field. Topics covered include: pharmacokinetics; therapeutic trials; adverse drug reactions; drug interactions; drug metabolism; pharmacoepidemiology; and drug development. The journal is essential reading for all researchers in clinical pharmacology.
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