Prediction of response to chemoradiation therapy in squamous cell carcinomas of the head and neck using dynamic contrast-enhanced MR imaging.

Publication Type	Academic Article
Authors	Kim S, Loevner L, Quon H, Kilger A, Sherman E, Weinstein G, Chalian A, Poptani H
Journal	AJNR Am J Neuroradiol
Volume	31
Issue	2
Pagination	262-8
Date Published	10/01/2009
ISSN	1936-959X
Keywords	Carcinoma, Squamous Cell, Head and Neck Neoplasms, Magnetic Resonance Imaging
Abstract	BACKGROUND AND PURPOSE: Tumor microenvironment, including blood flow and permeability, may provide crucial information regarding response to chemoradiation therapy. Thus, the objective of this study was to investigate the efficacy of pretreatment DCE-MR imaging for prediction of response to chemoradiation therapy in HNSCC. MATERIALS AND METHODS: DCE-MR imaging studies were performed on 33 patients with newly diagnosed HNSCC before neoadjuvant chemoradiation therapy by using a 1.5T (n = 24) or a 3T (n = 9) magnet. The data were analyzed by using SSM for estimation of K(trans), v(e), and tau(i). Response to treatment was determined on completion of chemoradiation as CR, with no evidence of disease (clinically or pathologically), or PR, with pathologically proved residual tumor. RESULTS: The average pretreatment K(trans) value of the CR group (0.64 +/- 0.11 minutes(-1), n = 24) was significantly higher (P = .001) than that of the PR (0.21 +/- 0.05 minutes(-1), n = 9) group. No significant difference was found in other pharmacokinetic model parameters: v(e) and tau(i), between the 2 groups. Although the PR group had larger metastatic nodal volume than the CR group, it was not significantly different (P = .276). CONCLUSIONS: These results indicate that pretreatment DCE-MR imaging can be potentially used for prediction of response to chemoradiation therapy of HNSCC.
DOI	10.3174/ajnr.A1817
PubMed ID	19797785
PubMed Central ID	PMC7964131