Scattered radiation doses absorbed by technicians at different distances from X-ray exposure: Experiments on prosthesis.
Biomed Mater Eng
; 26 Suppl 1: S1641-50, 2015.
Article
in En
| MEDLINE
| ID: mdl-26405929
ABSTRACT
UNLABELLED This work aimed to investigate the spatial distribution of scattered radiation doses induced by exposure to the portable X-ray, the C-arm machine, and to simulate the radiologist without a shield of lead clothing, radiation doses absorbed by medical staff at 2 m from the central exposure point. MATERIAL AND METHOD:
With the adoption of the Rando Phantom, several frequently X-rayed body parts were exposed to X-ray radiation, and the scattered radiation doses were measured by ionization chamber dosimeters at various angles from the patient. Assuming that the central point of the X-ray was located at the belly button, five detection points were distributed in the operation room at 1 m above the ground and 1-2 m from the central point horizontally.RESULTS:
The radiation dose measured at point B was the lowest, and the scattered radiation dose absorbed by the prosthesis from the X-ray's vertical projection was 0.07 ±0.03 µGy, which was less than the background radiation levels. The Fluke biomedical model 660-5DE (400 cc) and 660-3DE (4 cc) ion chambers were used to detect air dose at a distance of approximately two meters from the central point. The AP projection radiation doses at point B was the lowest (0.07±0.03 µGy) and the radiation doses at point D was the highest (0.26±0.08 µGy) .Only taking the vertical projection into account, the radiation doses at point B was the lowest (0.52 µGy), and the radiation doses at point E was the highest (4 µGy).The PA projection radiation at point B was the lowest (0.36 µGy) and the radiation doses at point E was the highest(2.77 µGy), occupying 10-32% of the maximum doses. The maximum dose in five directions was nine times to the minimum dose. When the PX and the C-arm machine were used, the radiation doses at a distance of 2 m were attenuated to the background radiation level. The radiologist without a lead shield should stand at point B of patient's feet. Accordingly, teaching materials on radiation safety for radiological interns and clinical technicians were formulated.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Prostheses and Implants
/
Tomography, X-Ray Computed
/
Radiation Monitoring
/
Occupational Exposure
/
Radiation Exposure
/
Allied Health Personnel
Type of study:
Diagnostic_studies
/
Prognostic_studies
Limits:
Humans
Country/Region as subject:
Asia
Language:
En
Journal:
Biomed Mater Eng
Journal subject:
BIOTECNOLOGIA
/
ENGENHARIA BIOMEDICA
Year:
2015
Document type:
Article
Affiliation country:
Taiwán