FDG-PET and diffusion-weighted MRI in head-and-neck cancer patients: Implications for dose painting

被引：51

作者：

Houweling, Antonetta C. ^{[1
]}

Wolf, Anne Lisa ^{[1
]}

Vogel, Wouter V. ^{[1
]}

Hamming-Vrieze, Olga ^{[1
]}

van Vliet-Vroegindeweij, Corine ^{[1
]}

van de Kamer, Jeroen B. ^{[1
]}

van der Heide, Uulke A. ^{[1
]}

机构：

[1] Antoni van Leeuwenhoek Hosp, Netherlands Canc Inst, Dept Radiotherapy, NL-1066 CX Amsterdam, Netherlands

来源：

RADIOTHERAPY AND ONCOLOGY | 2013年 / 106卷 / 02期

关键词：

MRI; PET; Radiotherapy; Dose painting; Head-and-neck cancer; F-18-FDG PET; RADIOTHERAPY; REGISTRATION; HYPOXIA; NUMBERS;

D O I：

10.1016/j.radonc.2013.01.003

中图分类号：

R73 [肿瘤学];

学科分类号：

100214 ;

摘要：

Purpose: The purpose of this study was to investigate if FDG-PET and DWI identify the same or different targets for dose escalation in the GTV of HN cancer patients. Additionally, the dose coverage of DWI-targets in an FDG-PET-based dose painting plan was analyzed. Materials and methods: Eighteen HN cancer patients underwent FDG-PET and DWI exams, which were converted to standardized uptake value (SUV)- and apparent diffusion coefficient (ADC)-maps. The correspondence between the two imaging modalities was determined on a voxel-level using Spearman's correlation coefficient (rho). Dose painting plans were optimized based on the 50% isocontour of the maximum SUV (SUV50%max). Dose coverage was analyzed in three different SUV- and three different ADC-targets using the mean dose and the near-minimum and near-maximum doses. Results: The average maximum SUV was 13.9 and the mean ADC was 1.17 . 10(-3) mm(2)/s. The average rho between SUV and ADC was -0.2 (range: -0.6 to 0.4). The ADC-targets were only partly overlapping the SUV50%max-target and the dose parameters were significantly smaller in the ADC-targets compared to the SUV50%max-target. Conclusions: FDG-PET and DWI contain different information, resulting in different targets. Further information about failure patterns and dose relations can be obtained by adding DWI to currently ongoing dose painting trials. (C) 2013 Elsevier Ireland Ltd. All rights reserved. Radiotherapy and Oncology 106 (2013) 250-254

引用

页码：250 / 254

页数：5

共 22 条

[1] Diffusion-Weighted Magnetic Resonance Imaging as a Cancer Biomarker: Consensus and Recommendations [J].