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Whole body magnetic resonance imaging in newly diagnosed multiple myeloma: early changes in lesional signal fat fraction predict disease response

Latifoltojar, A, Hall-Craggs, M, Rabin, N, Popat, R, Bainbridge, A, Dikaios, N, Sokolska, M, Rismani, A, D’Sa, S, Punwani, S and Yong, K (2017) Whole body magnetic resonance imaging in newly diagnosed multiple myeloma: early changes in lesional signal fat fraction predict disease response British Journal of Haematology, 176 (2). pp. 222-233.

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Cross-sectional imaging techniques are being increasingly used for disease evaluation in patients with multiple myeloma. Whole body magnetic resonance imaging (WB-MRI) scanning is superior to plain radiography in baseline assessment of patients but changes following treatment have not been systematically explored. We carried out paired WB-MRI scans in 21 newly diagnosed patients prior to, and 8-weeks after, starting chemotherapy, and analysed stringently selected focal lesions (FLs) for parametric changes. A total of 323 FLs were evaluated, median 20 per patient. At 8 weeks, there was a reduction in estimated tumour volume (eTV), and an increase in signal fat fraction (sFF) and apparent diffusion coefficient (ADC) in the group as a whole (P < 0·001). Patients who achieved complete/very good partial response (CR/VGPR) to induction had a significantly greater increase in sFF compared to those achieving ≤ partial response (PR; P = 0·001). When analysed on a per-patient basis, all patients achieving CR/VGPR had a significant sFF increase in their FL's, in contrast to patients achieving ≤PR. sFF changes in patients reaching maximal response within 100 days (fast responders) were greater compared to slow responders (P = 0·001). Receiver Operator Characteristic analysis indicated that sFF changes at 8 weeks were the best biomarker (area under the Curve 0·95) for an inferior response (≤PR). We conclude that early lesional sFF changes may provide important information on depth of response, and are worthy of further prospective study.

Item Type: Article
Subjects : Electronic Engineering
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering
Authors :
Latifoltojar, A
Hall-Craggs, M
Rabin, N
Popat, R
Bainbridge, A
Sokolska, M
Rismani, A
D’Sa, S
Punwani, S
Yong, K
Date : 1 January 2017
Funders : Engineering and Physical Sciences Research Council (EPSRC)
DOI : 10.1111/bjh.14401
Copyright Disclaimer : © 2016 The Authors. British Journal of Haematology published by John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Uncontrolled Keywords : Magnetic resonance imaging, Whole body, Multiple myeloma, Bortezomib, Treatment response
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 13:58
Last Modified : 11 Dec 2018 11:23

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