RADIATION PROTECTION ANALYSIS ON WALL OF RADIOLOGY INSTALLATION USING RADSHIELD THAT BASED ON NCRP 147

• Main Author: Yogandini, Rosi
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/78081
• Institution: Institut Teknologi Bandung

Radiation protection is an action to minimize or reduce exposure to harmful ionizing radiation to patients, medical staff, and society during examination procedures. This research aims to study and understand the application of radiation protection to the walls and doors of radiological facilities in hospitals based on the rules in NCRP Reports No. 147 using Radshield software. In the simulation exploration process, there are two inputs that will be differentiated, barrier’s layout changes and the type of material on the door. In addition to using the Radshield simulation, exposure rate measurements will be performed using gas filled detector as a justification that the exposure rate measured on dressing room has a safe value. The results show that the closer the barrier to the radiation source, the thicker the required barrier. The thickness of the walls and doors should increase as they are both moved 1 mm closer to the source of radiation. The thickness of the primary wall increased by 1,0224 mm, the secondary wall ranging from 0.4516 to 0.967 mm, doors with Pb material 0.0038 - 0.0053 mm, and doors of wood material 2.3135 - 4.1323 mm. Pb materials do not require significant thickening than wood. The thickness of the walls and the Pb sheets on the doors installed in hospitals have met the minimum criteria. The walls have a difference ranging from 35.45 to 82.20% while Pb have a difference ranging from 92,04 to 94,83%. The exposure rate measured in the wardrobe at the time of clearance had the same value as the background radiation, whereas the simulations showed a greater value compared with the measurement value. So this study concludes that the doors installed in RS A's Radiology Dressing Room are able to withstand radiation well on the thoraks examination.