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Positional Reproducibility and Effects of a Rectal Balloon in Prostate Cancer Radiotherapy

 Jae Ho Cho  ;  Chang-Geol Lee  ;  Gwi Eon Kim  ;  Ikjae Lee  ;  Yang Gun Suh  ;  Jinsil Seong  ;  Chang-Ok Suh  ;  Sangkyu Lee  ;  Jooho Kim  ;  Dae Ryong Kang 
 JOURNAL OF KOREAN MEDICAL SCIENCE, Vol.24(5) : 894-903, 2009 
Journal Title
Issue Date
Catheterization/methods* ; Dose-Response Relationship, Radiation ; Humans ; Male ; Neoplasm Staging ; Prostatic Neoplasms/radiotherapy* ; Radiotherapy, Conformal ; Radiotherapy, Intensity-Modulated ; Rectum* ; Tomography, X-Ray Computed ; Treatment Outcome
Rectal Balloon ; Prostatic Neoplasms ; Radiotherapy ; Intensity-Modulated ; 3D Conformal Radiotherapy ; Acute Toxicity
Despite the increasing use of the rectal balloon in prostate cancer radiotherapy, many issues still remain to be verified objectively including its positional reproducibility and relevance to treatment morbidity. We have developed a custom rectal balloon that has a scale indicating the depth of insertion and dilates symmetrically ensuring positional reproducibility. Fifty patients with prostate cancer treated by definitive 3D-conformal radiotherapy (3D-CRT) or intensity-modulated radiotherapy (IMRT) with rectal balloon were analyzed. Each of first five patients undergone computed tomography (CT) three times with a rectal balloon. The positional reproducibility was tested by Intraclass Correlation Coefficient (ICC) from the CT-to-CT fusion images. Planning variables and clinical acute toxicities were compared between when or not applying balloon. An ICC of greater than 0.9 in all directions revealed an excellent reproducibility of the balloon. Rectal balloon improved considerably the mean dose and V(45Gy)-V(65Gy) in plan comparison, and especially in 3D-CRT the rectal volume exposed to more than 60 Gy dropped from 41.3% to 19.5%. Clinically, the balloon lowered acute toxicity, which was lowest when both the balloon and IMRT were applied simultaneously. The rectal balloon carries excellent reproducibility and reduces acute toxicity in 3D-CRT and IMRT for prostate cancer
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Appears in Collections:
4. Graduate School of Public Health (보건대학원) > Graduate School of Public Health (보건대학원) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Radiation Oncology (방사선종양학교실) > 1. Journal Papers
Yonsei Authors
Kang, Dae Ryong(강대용)
Kim, Gwi Eon(김귀언)
Suh, Chang Ok(서창옥)
Seong, Jin Sil(성진실) ORCID logo https://orcid.org/0000-0003-1794-5951
Lee, Ik Jae(이익재) ORCID logo https://orcid.org/0000-0001-7165-3373
Lee, Chang Geol(이창걸) ORCID logo https://orcid.org/0000-0002-8702-881X
Cho, Jae Ho(조재호) ORCID logo https://orcid.org/0000-0001-9966-5157
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