title: Evaluation of radiation exposure dose at double-balloon endoscopy for the patients with small bowel disease.
abstract: Double-balloon endoscopy (DBE) is useful for the diagnosis and treatment of small bowel diseases. Although fluoroscopy is used to confirm the position of endoscope at DBE, the endoscopist does not have the knowledge with regard to the radiation exposure dose. In this study, we evaluated the absorbed dose during DBE in patients with suspected or established small bowel diseases. This was a retrospective study in which the estimated fluoroscopic radiation absorbed doses loaded on the small bowel and skin were determined according to the data of the referential X-ray experiment with a human body phantom. The subjects were 415 DBEs preformed in total. The mean small bowel absorbed doses on antegrade and retrograde DBEs were 42.2 and 53.8 mGy, respectively, showing that the organ dose applied in retrograde DBE was significantly higher (P<0.0001). The mean skin absorbed doses of them were 79.2 and 101.0 mGy, respectively, showing that the dose was also significantly higher on retrograde DBE (P<0.0001). Of 27 cases who were applied endoscopic balloon dilation, the mean fluoroscopy time was 16.0 minutes, and mean small bowel and skin absorbed doses were 121.9 and 228.9 mGy, respectively. In conclusion, endoscopist should be careful for reducing the organ exposure dose at DBE, particularly for the lower abdominal region.
  
  
  
  Double-balloon enteroscopy (DBE), endoscopic balloon dilation (EBD), endoscopic mucosal resection (EMR), double-balloon endoscopic retrograde cholangiopancreatography (DBERCP), percutaneous coronary intervention (PCI).
authors: 1Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, Nagoya, Japan.
authors: Asuka
authors: A
authors: Nagura
authors: 1Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, Nagoya, Japan.
authors: Masanao
authors: M
authors: Nakamura
authors: 1Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, Nagoya, Japan.
authors: Osamu
authors: O
authors: Watanabe
authors: Department of Endoscopy, Nagoya University Hospital, Nagoya, Japann.
authors: Takeshi
authors: T
authors: Yamamura
authors: 1Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, Nagoya, Japan.
authors: Kohei
authors: K
authors: Funasaka
authors: 1Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, Nagoya, Japan.
authors: Eizaburo
authors: E
authors: Ohno
authors: 1Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, Nagoya, Japan.
authors: Ryoji
authors: R
authors: Miyahara
authors: 1Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, Nagoya, Japan.
authors: Hiroki
authors: H
authors: Kawashima
authors: Nagoya University Brain & Mind Research Center, Nagoya, Japan.
authors: Shuji
authors: S
authors: Koyama
authors: Division of Radiological Technology, Kasugai Municipal Hospital, Kasugai, Japan.
authors: Tomoki
authors: T
authors: Hinami
authors: 1Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, Nagoya, Japan.
authors: Hidemi
authors: H
authors: Goto
authors: Department of Endoscopy, Nagoya University Hospital, Nagoya, Japann.
authors: Yoshiki
authors: Y
authors: Hirooka
mesh_terms: D058582:Double-Balloon Enteroscopy; D005260:Female; D006801:Humans; D007410:Intestinal Diseases; D007421:Intestine, Small; D008297:Male; D062645:Percutaneous Coronary Intervention; D000069079:Radiation Exposure; D012189:Retrospective Studies
keywords: double-balloon endoscopy; endoscopic balloon dilation; radiation exposure; small bowel disease