Dose-volumetric Parameters for Predicting Severe Radiation Pneumonitis after Three-dimensional Conformal Radiation Therapy for Lung Cancer
- 1 April 2005
- journal article
- Published by Radiological Society of North America (RSNA) in Radiology
- Vol. 235 (1) , 208-215
- https://doi.org/10.1148/radiol.2351040248
Abstract
PURPOSE: To retrospectively evaluate dose-volumetric parameters for association with risk of severe (grade ≥3) radiation pneumonitis (RP) in patients after three-dimensional (3D) conformal radiation therapy for lung cancer. MATERIALS AND METHODS: The study was approved by the institutional review board, which did not require informed consent. Data from 76 patients (66 men, 10 women; median age, 60 years; range, 35–79 years) with histologically proved lung cancer treated curatively with 3D conformal radiation therapy between August 2001 and October 2002 were retrospectively analyzed. Twenty patients underwent surgery before radiation therapy; 57 patients received chemotherapy. Median total radiation dose of 60 Gy (range, 54–66 Gy) was delivered in 30 (range, 27–33) fractions over 6 weeks. RP was scored by using Radiation Therapy Oncology Group criteria. Clinical parameters were analyzed. Dose-volumetric parameters analyzed were percentage of lung volume that received a dose of 20 Gy or more (V20), 30 Gy or...Keywords
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