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Parotid gland as a risk organ in whole brain radiotherapy.

Authors
Noh, OK; Chun, M; Nam, SS; Jang, H; Jo, S; Oh, YT; Lim, JC
Citation
Radiotherapy and oncology : journal of the European Society for Therapeutic Radiology and Oncology, 98(2):223-226, 2011
Journal Title
Radiotherapy and oncology : journal of the European Society for Therapeutic Radiology and Oncology
ISSN
0167-81401879-0887
Abstract
BACKGROUND AND PURPOSE: Since the introduction of CT-based simulation for use in whole brain radiotherapy (WBRT), we have observed that a large volume of the parotid glands is included in the radiation fields. The purpose of this study is to analyze the dose-volume statistics of the parotid glands in patients undergoing WBRT.



MATERIALS AND METHODS: Thirty-two patients received WBRT using CT-based simulation with bilateral two-field arrangement. Daily fraction was 3 Gy with total dose of 30 Gy in 2 weeks. We analyzed the radiation dose from WBRT to the parotid glands.



RESULTS: Average of the mean parotid dose was 17.5 Gy (range, 10.5-26.2) for both glands. Mean parotid doses ≥20 and ≥25 Gy were observed in 22 (34.4%) and 4 (6.3%) of 64 individual glands. The numbers of patients with a mean parotid dose of both glands ≥20Gy and ≥25 Gy were 12 (37.5%) and 1 (3.1%), respectively.



CONCLUSIONS: Mean parotid dose was variable in patients with WBRT. According to the parotid dose and combined potential risk factors, parotid glands can be regarded as a risk organ in WBRT for improvement of patient quality of life.
MeSH terms
AdultAgedBrain Neoplasms/*radiotherapy/secondaryCranial Irradiation/*adverse effectsFemaleHumansMaleMiddle AgedParotid Gland/*radiation effectsRadiation DosageRisk
DOI
10.1016/j.radonc.2010.12.013
PMID
21300416
Appears in Collections:
Journal Papers > School of Medicine / Graduate School of Medicine > Radiation Oncology
AJOU Authors
노, 오규전, 미선오, 영택
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