TITLE:
Assessment of ESAK and ED for Adult’s Patients Examined by Computed Radiography
AUTHORS:
Suhaib Alameen, Fatima A. A. Badrey, Abdulrahman S. Abdullateef, Abdelfatah M. Ahmed
KEYWORDS:
ESAK, Estimation Dose, CR, Patient Dose, Effective Dose
JOURNAL NAME:
International Journal of Medical Physics, Clinical Engineering and Radiation Oncology,
Vol.5 No.4,
November
11,
2016
ABSTRACT: This study designed to evaluate the entrance
surface air kerma (ESAK) to the patient during X-ray examination to the skull
antero-posterior (AP), skull Lateral (LAT), chest postero-anterior (PA), Lumber
spine AP/LAT and Pelvis AP. Totally, 408 patients were included in this study
using computed radiography (CR) in different three hospitals in Khartoum; five
X-ray machines were covered. The entrance surface air kerma (ESAK) was
calculated for each patient from the exposure parameters using different peak
tube voltages. Patient’s data such as (age and weight) and exposure parameters
(kVp) and (mAs) were recorded. The result obtained showed that, the entrance
surface air kerma ranged from 0.88 to 3.30 mGy for Skull (AP), 0.588 to 1.87
mGy for skull (LAT), 0.03 to 2 mGy for chest PA, 1.50 to 3.40 mGy Lumbar spine
AP, 2.60 to 5.15 mGy for Lumbar spine (LAT), and 1.05 to 4.40 mGy for Pelvis.
This study provides additional data that can help the regulatory authority to
establish reference dose level for diagnostic radiology in Sudan. This study
recommends that the CR operator must be used to optimize the patient dose by using
the best strategies available for reducing radiation dose. Computed radiography
must be used with high level training for medical staff to reduce the dose;
each radiology department should implement a patient dose measurement quality
assurance programme. Doses to the patients should be regularly monitored and
the proposed national DRLs should be taken as guidance for optimization.