Fan-Shaped Complete Block on Helical Tomotherapy for Esophageal Cancer: A Phantom Study
Joint Authors
Shiau, An-Cheng
Tien, Hui-Ju
Yeh, Hsin-Pei
Shueng, Pei-Wei
Chang, Chiu-Han
Mok, Greta S. P.
Lin, Chi-Ta
Wu, Tung-Hsin
Source
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-6, 6 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-02-12
Country of Publication
Egypt
No. of Pages
6
Main Subjects
Abstract EN
Radiation pneumonitis (RP) is a common complication for radiotherapy of esophageal cancer and is associated with the low dose irradiated lung volume.
This study aims to reduce the mean lung dose (MLD) and the relative lung volume at 20 Gy ( V 20 ) and at low dose region using various designs of the fan-shaped complete block (FSCB) in helical tomotherapy.
Hypothetical esophageal tumor was delineated on an anthropomorphic phantom.
The FSCB was defined as the fan-shaped radiation restricted area located in both lungs.
Seven treatment plans were performed with nonblock design and FSCB with different fan angles, that is, from 90° to 140°, with increment of 10°.
The homogeneous index, conformation number, MLD, and the relative lung volume receiving more than 5, 10, 15, and 20 Gy ( V 5 , V 10 , V 15 , and V 20 ) were determined for each treatment scheme.
There was a substantial reduction in the MLD, V 5 , V 10 , V 15 , and V 20 when using different types of FSCB as compared to the nonblock design.
The reduction of V 20 , V 15 , V 10 , and V 5 was 6.3%–8.6%, 16%–23%, 42%–57%, and 42%–66% for FSCB 90°–140°, respectively.
The use of FSCB in helical tomotherapy is a promising method to reduce the MLD, V 20 , and relative lung volume in low dose region, especially in V 5 and V 10 for esophageal cancer.
American Psychological Association (APA)
Chang, Chiu-Han& Mok, Greta S. P.& Shueng, Pei-Wei& Yeh, Hsin-Pei& Shiau, An-Cheng& Tien, Hui-Ju…[et al.]. 2015. Fan-Shaped Complete Block on Helical Tomotherapy for Esophageal Cancer: A Phantom Study. BioMed Research International،Vol. 2015, no. 2015, pp.1-6.
https://search.emarefa.net/detail/BIM-1057382
Modern Language Association (MLA)
Chang, Chiu-Han…[et al.]. Fan-Shaped Complete Block on Helical Tomotherapy for Esophageal Cancer: A Phantom Study. BioMed Research International No. 2015 (2015), pp.1-6.
https://search.emarefa.net/detail/BIM-1057382
American Medical Association (AMA)
Chang, Chiu-Han& Mok, Greta S. P.& Shueng, Pei-Wei& Yeh, Hsin-Pei& Shiau, An-Cheng& Tien, Hui-Ju…[et al.]. Fan-Shaped Complete Block on Helical Tomotherapy for Esophageal Cancer: A Phantom Study. BioMed Research International. 2015. Vol. 2015, no. 2015, pp.1-6.
https://search.emarefa.net/detail/BIM-1057382
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1057382