ASSESSMENT OF DOSE FOR CHEST X-RAY EXAMINATION AT STATE SPECIALIST HOSPITAL GOMBE (SSHG) AND FEDERAL TEACHING
Keywords:
X-ray Thermoluminescent Dosimeters, Effective Dose (ED) and Entrance Skin Dose (ESD).Abstract
Assessment of dose for chest x-ray examination is of great value in radiation protection field.
This study was carried out in two hospitals in Gombe, Gombe State Nigeria. The aim and
objective of this work was to assess the Entrance Skin Dose delivered to patients during routine
chest x-ray examination and the Effective dose. A total of forty-two (42) Thermoluminescent
Dosimeters (TLD) were placed on the patients during chest x-ray exposure to estimate the
Entrance Skin Dose received by patients of different ages and heights. The irradiated TLD
chips used were read with a Hashaw 45100 TLD reader available at the Centre for Energy
Research and Training (CERT), Ahmadu Bello University, Zaria. The ESDs and EDs were
obtained using six approaches: Thermoluminescence Dosimeter (TLDs) chips, Edwin &
McCullough’s formula, Edmond’s formula, Kumar et al.'s formula, Chougule & Hussaini’s
formula and Pratik et al.’s formula. The ESD result shows that the mean doses obtained in the
two hospitals were 0.33 ± 0.04 mGy and 0.35 ± 0.07 mGy for SSHG and FTHG respectively.
While the mean ED results were 0.04 ± 0.002 mSv and 0.04 ± 0.004 mSv for SSHG and FTHG
respectively. The results obtained were slightly higher compared to other established work.
