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Lesion T2 relaxation times and volumes predict the response of malignant breast lesions to neoadjuvant chemotherapy

Tan, P. Clara; Pickles, Martin D.; Lowry, Martin; Manton, David J.; Turnbull, Lindsay W.

Authors

P. Clara Tan

Martin D. Pickles

Martin Lowry

David J. Manton D.J.Manton@hull.ac.uk

Lindsay W. Turnbull

Abstract

The aim of this study was to investigate the utility of the water T-2 values of malignant breast lesions in predicting response after the first and second cycles of neoadjuvant chemotherapy (NAC), both alone and in combination with lesion volumes. Thirty-five patients were scanned before the commencement of chemotherapy and again after the first, second and final treatment cycles. Two methods of obtaining lesion T2 were used: imaging, where a series of T-2-weighted images was acquired (T-R/T-E = 1000/30, 60, 90 and 120 ms), and spectroscopy, where the T2 value of unsuppressed water signal was determined with a multiecho sequence (T-R = 1.5 s; initial T-E=35 ms; 64 steps of 2.5 ms; 2 unsuppressed acquisitions per T-E). Lesion volumes were computed from contrast-enhanced 3D fat-suppressed images. The study found that, using the imaging method of obtaining T2, the ratio of the product of lesion T2 and volume after the second cycle of NAC to pretreatment value is a good predictor of ultimate lesion response, defined as a >= 65% reduction in tumor volume after the final treatment cycle, with positive and negative predictive values of 95.5% and 84.6%, respectively. (c) 2008 Elsevier Inc. All rights reserved.

Journal Article Type Article
Publication Date 2008-01
Journal MAGNETIC RESONANCE IMAGING
Print ISSN 0730-725X
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 26
Issue 1
Pages 26-34
Institution Citation Tan, P. C., Pickles, M. D., Lowry, M., Manton, D. J., & Turnbull, L. W. (2008). Lesion T2 relaxation times and volumes predict the response of malignant breast lesions to neoadjuvant chemotherapy. Magnetic Resonance Imaging, 26(1), (26-34). doi:10.1016/j.mri.2007.04.002. ISSN 0730-725X
DOI https://doi.org/10.1016/j.mri.2007.04.002
Keywords Breast cancer; Chemotherapy; Magnetic resonance imaging; Magnetic resonance spectroscopy; Water T2
Publisher URL https://www.sciencedirect.com/science/article/pii/S0730725X07002627?via%3Dihub#!