title: Understanding the Scatter Radiation Distribution during C-arm CT Examination: A Body Phantom Study.
abstract: The purpose of this study was to understand the scatter radiation distribution during C-arm CT examination in the interventional radiography (IVR) room to show the escaped area and the radiation protective method. The C-arm rotates 200° in 5 s. The tube voltage was 90 kV, and the entrance dose to the detector was 0.36 μGy/frame during C-arm CT examination. The scattered doses were measured each 50 cm from the isocenter like a grid pattern. The heights of the measurement were 50, 100, and 150 cm from the floor. The maximum scattered doses were 38.23±0.60 μGy at 50 cm, 43.86±0.20 μGy at 100 cm, and 25.78±0.37 μGy at 150 cm. The scatter radiation distribution at 100 cm was the highest scattered dose. The operator should protect their reproductive gland, thyroid, and lens. The scattered dose was low behind the C-arm body and the bed, so they will be able to become the escaped area for staff.
authors.affiliation: Department of Central Radiology, Osaka City University Hospital.
authors.forename: Toshiyo
authors.initials: T
authors.lastname: Norimasa
authors.forename: Akihiko
authors.initials: A
authors.lastname: Kakimi
authors.forename: Yoshinori
authors.initials: Y
authors.lastname: Takao
authors.forename: Shohei
authors.initials: S
authors.lastname: Sasaki
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Katayama
authors.forename: Daisuke
authors.initials: D
authors.lastname: Himoto
authors.forename: Shinichiro
authors.initials: S
authors.lastname: Izuta
authors.forename: Takao
authors.initials: T
authors.lastname: Ichida
mesh_terms: D019047:Phantoms, Imaging; D014057:Tomography, X-Ray Computed / Q000295:instrumentation*