title: A Survey of Stereotactic Body Radiotherapy in Korea.
abstract: OBJECTIVE
  The purpose of this study is to investigate the current status of stereotactic body radiotherapy (SBRT) in Korea. A nationwide survey was conducted by the Korean Stereotactic Radiosurgery Group of the Korean Society for Radiation Oncology (KROG 13-13).
  
  
  METHODS
  SBRT was defined as radiotherapy with delivery of a high dose of radiation to an extracranial lesion in ≤ 4 fractions. A 16-questionnaire survey was sent by e-mail to the chief of radiation oncology at 85 institutions in June 2013.
  
  
  RESULTS
  All institutions (100%) responded to this survey. Of these, 38 institutions (45%) have used SBRT and 47 institutions (55%) have not used SBRT. Regarding the treatment site, the lung (92%) and liver (76%) were the two most common sites. The most common schedules were 60 Gy/4 fractions for non-small cell lung cancer, 48 Gy/4 fractions for lung metastases, 60 Gy/3 fractions for hepatocellular carcinoma, and 45 Gy/3 fractions or 40 Gy/4 fractions for liver metastases. Four-dimensional computed tomography (CT) was the most common method for planning CT (74%). During planning CT, the most common method of immobilization was the use of an alpha cradle/vacuum-lock (42%).
  
  
  CONCLUSIONS
  Based on this survey, conduct of further prospective studies will be needed in order to determine the appropriate prescribed doses and to standardize the practice of SBRT.
authors.affiliation: Department of Radiation Oncology, Soonchunhyang University College of Medicine, Bucheon, Korea.
authors.forename: Sun Hyun
authors.initials: SH
authors.lastname: Bae
authors.affiliation: Department of Radiation Oncology, Korea Institute of Radiological and Medical Sciences, Seoul, Korea.
authors.forename: Mi-Sook
authors.initials: MS
authors.lastname: Kim
authors.affiliation: Department of Radiation Oncology, Korea Institute of Radiological and Medical Sciences, Seoul, Korea.
authors.forename: Won Il
authors.initials: WI
authors.lastname: Jang
authors.affiliation: Department of Radiation Oncology, Incheon St. Mary's Hospital, The Catholic University of Korea, Incheon, Korea.
authors.forename: Chul-Seung
authors.initials: CS
authors.lastname: Kay
authors.affiliation: Department of Radiation Oncology, Inha University Hospital, Inha University School of Medicine, Incheon, Korea.
authors.forename: Woochul
authors.initials: W
authors.lastname: Kim
authors.affiliation: Department of Radiation Oncology, Soonchunhyang University College of Medicine, Cheonan, Korea.
authors.forename: Eun Seog
authors.initials: ES
authors.lastname: Kim
authors.affiliation: Department of Radiation Oncology, Seoul National University College of Medicine, Seoul, Korea.
authors.forename: Jin Ho
authors.initials: JH
authors.lastname: Kim
authors.affiliation: Department of Radiation Oncology, Keimyung University Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea.
authors.forename: Jin Hee
authors.initials: JH
authors.lastname: Kim
authors.affiliation: Department of Radiation Oncology, Dongnam Institute of Radiological and Medical Sciences, Busan, Korea.
authors.forename: Kwang Mo
authors.initials: KM
authors.lastname: Yang
authors.affiliation: Department of Radiation Oncology, Gachon University Gil Medical Center, Gachon University of Medicine and Science, Incheon, Korea.
authors.forename: Kyu Chan
authors.initials: KC
authors.lastname: Lee
authors.affiliation: Department of Radiation Oncology, Soonchunhyang University College of Medicine, Seoul, Korea.
authors.forename: A Ram
authors.initials: AR
authors.lastname: Chang
authors.affiliation: Department of Radiation Oncology, Haeundae Paik Hospital, Inje University School of Medicine, Busan, Korea.
authors.forename: Sunmi
authors.initials: S
authors.lastname: Jo
keywords: Radiation oncology; Radiosurgery; Survey