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|Title:||A simple, reproducible method for monitoring the treatment of tumours using dynamic contrast-enhanced MR imaging|
Utting, J. F.
Thomas, A. L.
Steward, William Patrick P.
Horsfield, Mark Andrew
|Publisher:||Cancer Research UK, Nature Publishing Group|
|Citation:||British Journal of Cancer, 2006, 94 (10), pp. 1420-1427|
|Abstract:||Dynamic contrast-enhanced MR imaging (DCE-MRI) may act as a biomarker for successful cancer therapy. Simple, reproducible techniques may widen this application. This paper demonstrates a single slice imaging technique. The image acquisition is performed in less than 500 ms making it relatively insensitive to respiratory motion. Data from phantom studies and a reproducibility study in solid human tumours are presented. The reproducibility study showed a coefficient of variation (CoV) of 19.1% for K(trans) and 15.8% for the initial area under the contrast enhancement curve (IAUC). This was improved to 16 and 13.9% if tumours of diameter less than 3 cm were excluded. The individual repeatability (the range within which individual measurements are expected to fall) was 30.6% for K(trans) and 26.5% for IAUC for tumours greater than 3 cm diameter. This approach to DCE-MRI image acquisition can be performed with standard clinical scanners, and data analysis is straightforward. For treatment trials with 10 patients in a cohort, the CoV implies that the method would be sensitive to a treatment effect of greater than 18%. The individual repeatability is well inside the 40% change shown to be important in clinical studies using this DCE-MRI technique.|
|Rights:||Copyright © the authors, 2006. From twelve months after its original publication, this work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/|
|Appears in Collections:||Published Articles, Dept. of Cancer Studies and Molecular Medicine|
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