Abstract:
:Dynamic contrast-enhanced (DCE-) MRI is often used to evaluate the response to experimental antiangiogenic therapies in small animal models of cancer. Unfortunately, DCE-MRI studies often require a substantial investment of both time and money to achieve the desired level of statistical significance. Multiple-mouse MRI has previously been used to improve imaging efficiency, but its feasibility for DCE-MRI has not been investigated. The purpose of this work was to determine if multiple-mouse DCE-MRI is feasible when using gadolinium-based contrast agents with a low molecular weight. A population of tumor-bearing mice was scanned using two four-element arrays and a single-coil configuration on a 4.7T, 40 cm bore Bruker Biospec MRI scanner. Pharmacokinetic parameters were calculated and compared to determine if a significant difference between methodologies existed. With both four-animal imaging configurations, animal throughput accelerations of just less than three were achieved and quantitative data were not significantly different than from single-animal acquisitions.
journal_name
Magn Reson Medjournal_title
Magnetic resonance in medicineauthors
Ramirez MS,Ragan DK,Kundra V,Bankson JAdoi
10.1002/mrm.21348subject
Has Abstractpub_date
2007-09-01 00:00:00pages
610-5issue
3eissn
0740-3194issn
1522-2594journal_volume
58pub_type
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