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Published in: Radiation Oncology 1/2014

Open Access 01-12-2014 | Research

Risk of secondary cancers from scattered radiation during intensity-modulated radiotherapies for hepatocellular carcinoma

Authors: Dong Wook Kim, Kwangzoo Chung, Weon Kuu Chung, Sun Hyun Bae, Dong Oh Shin, Seongeon Hong, Sung Ho Park, Sung-Yong Park, Chae-Seon Hong, Young Kyung Lim, Dongho Shin, Se Byeong Lee, Hyun-ho Lee, Jiwon Sung, Myonggeun Yoon

Published in: Radiation Oncology | Issue 1/2014

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Abstract

Purpose

To evaluate and compare the risks of secondary cancers from therapeutic doses received by patients with hepatocellular carcinoma (HCC) during intensity-modulated radiotherapy (IMRT), volumetric arc therapy (VMAT), and tomotherapy (TOMO).

Methods

Treatments for five patients with hepatocellular carcinoma (HCC) were planned using IMRT, VMAT, and TOMO. Based on the Biological Effects of Ionizing Radiation VII method, the excess relative risk (ERR), excess absolute risk (EAR), and lifetime attributable risk (LAR) were evaluated from therapeutic doses, which were measured using radiophotoluminescence glass dosimeters (RPLGDs) for each organ inside a humanoid phantom.

Results

The average organ equivalent doses (OEDs) of 5 patients were measured as 0.23, 1.18, 0.91, 0.95, 0.97, 0.24, and 0.20 Gy for the thyroid, lung, stomach, liver, small intestine, prostate (or ovary), and rectum, respectively. From the OED measurements, LAR incidence were calculated as 83, 46, 22, 30, 2 and 6 per 104 person for the lung, stomach, normal liver, small intestine, prostate (or ovary), and rectum.

Conclusions

We estimated the secondary cancer risks at various organs for patients with HCC who received different treatment modalities. We found that HCC treatment is associated with a high secondary cancer risk in the lung and stomach.
Appendix
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Metadata
Title
Risk of secondary cancers from scattered radiation during intensity-modulated radiotherapies for hepatocellular carcinoma
Authors
Dong Wook Kim
Kwangzoo Chung
Weon Kuu Chung
Sun Hyun Bae
Dong Oh Shin
Seongeon Hong
Sung Ho Park
Sung-Yong Park
Chae-Seon Hong
Young Kyung Lim
Dongho Shin
Se Byeong Lee
Hyun-ho Lee
Jiwon Sung
Myonggeun Yoon
Publication date
01-12-2014
Publisher
BioMed Central
Published in
Radiation Oncology / Issue 1/2014
Electronic ISSN: 1748-717X
DOI
https://doi.org/10.1186/1748-717X-9-109

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