title: Cone-beam computed tomography  imaging: therapeutic staff dose during  chemoembolisation procedure.
abstract: Cone-beam computed tomography (CBCT) imaging is an important requirement to perform real-time therapeutic image-guided procedures on patients. The purpose of this study is to estimate the personal-doseequivalent and annual-personal-dose from CBCT imaging during transarterial chemoembolisation (TACE). Therapeutic staff doses (therapeutic and assistant physician) were collected during 200 patient (65 ± 15 years, range: 40–86) CBCT examinations over six months. Absorbed doses were assessed using thermo-luminescent dosimeters during patient hepatic TACE therapy. We estimated personal-dose-equivalent (PDE) and annual-personal-dose (APD) from absorbed dose based oninternational atomic energy agency protocol. APD for therapeutic procedure was calculated (therapeutic physician: 5.6 mSv; assistant physician: 5.08 mSv) based on institutional work load. Regarding PDE, the hands of the staff members received a greater dose compared to other anatomical locations (therapeutic physician: 56 mSv, 72 mSv; assistant physician: 12 mSv, 14 mSv). Annual radiation doses to the eyes and hands of the staff members were lower compared to the prescribed limits by the International Commission on Radiological Protection (ICRP). PDE and APD of both therapeutic staff members were within the recommended ICRP-103 annual limit. Dose to the assistant physician waslower than the dose to the therapeutic physician during imaging. Annual radiation doses to eye-lenses and hands of both staff members were lower than prescribed limits.
authors.forename: Jijo
authors.initials: J
authors.lastname: Paul
authors.forename: Annamma
authors.initials: A
authors.lastname: Chacko
authors.forename: Emmanuel C
authors.initials: EC
authors.lastname: Mbalisike
authors.forename: Thomas J
authors.initials: TJ
authors.lastname: Vogl
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001822:Body Burden; D016461:Chemoembolization, Therapeutic / Q000706:statistics & numerical data*; D054893:Cone-Beam Computed Tomography / Q000706:statistics & numerical data*; D005858:Germany; D006801:Humans; D008875:Middle Aged; D016273:Occupational Exposure / Q000706:statistics & numerical data*; D011829:Radiation Dosage; D015641:Radiography, Interventional / Q000706:statistics & numerical data*; D015642:Radiology, Interventional / Q000706:statistics & numerical data*; D013819:Thermoluminescent Dosimetry / Q000706:statistics & numerical data*