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SUMMARY:Monte Carlo-Based Optimization of Occupational Radiation Protectio
 n in a Diagnostic Radiology Facility at Kitui County Level V Hospital\, Ke
 nya
DTSTART;VALUE=DATE-TIME:20260522T093000Z
DTEND;VALUE=DATE-TIME:20260522T095000Z
DTSTAMP;VALUE=DATE-TIME:20260624T082747Z
UID:indico-contribution-3819@indico.tlabs.ac.za
DESCRIPTION:Speakers: Muthama Matsitsi (South Eastern Kenya University)\nA
 ccurate occupational dose estimation is essential for optimizing radiation
  safety and ensuring compliance with regulatory guidelines. The spatial di
 stribution of scatter radiation in the radiography room was characterized 
 using Monte Carlo simulations based on Geant4. A diagnostic X-ray system w
 as accurately modeled and validated using experimental measurements to eva
 luate the magnitude and distribution of scattered radiation. Simulated and
  measured dose rates showed good agreement within ±10%\, with a root mean
  square error of 0.08 µSv h⁻¹\, indicating strong model reliability. S
 catter dose exhibited a general decrease with distance from the source\, a
 pproximately following the Inverse Square Law\, although deviations were o
 bserved due to distributed scatter sources and attenuation in air. The sca
 tter dose decreased from 1.51 µSv h⁻¹ at 0.25 m to 0.36 µSv h⁻¹ at
  2.0 m from the source\, representing approximately a 76% reduction. Incre
 asing the field size from 10 × 10 cm² to 20 × 20 cm² and 30 × 30 cm²
  significantly increased scatter dose even at far-field positions. The com
 bined use of lead protective clothing and 0.5 mm mobile lead shielding red
 uced scatter dose by approximately 90–96%. Overall\, the estimated occup
 ational dose levels were within internationally recommended limits. The ob
 served distribution and variability of scatter radiation highlight the imp
 ortance of continuous radiation protection optimization. The study therefo
 re recommends routine indoor radiation monitoring\, particularly for staff
  working in radiology departments. Strict implementation of the ALARA prin
 ciple through appropriate positioning and effective shielding using lead a
 prons is strongly recommended.\n\nKeywords: Occupational dose\, Monte Carl
 o simulation\, X-ray dosimetry\, Scatter Dose\, radiation safety.\n\nhttps
 ://indico.tlabs.ac.za/event/139/contributions/3819/
LOCATION:NRF-iThemba LABS\, Old Faure Road\, Cape Town Auditorium
URL:https://indico.tlabs.ac.za/event/139/contributions/3819/
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