ESTIMATION OF ORGAN EQUIVALENT AND EFFECTIVE DOSES FROM DIAGNOSTIC X-RAY

0
1088

ESTIMATION OF ORGAN EQUIVALENT AND EFFECTIVE DOSES FROM DIAGNOSTIC X-RAY

 

ABSTRACT
The radiation dose received by the patient during the radiological examination is essential to prevent risks of exposure. The aim of this work is to study organ equivalent and effective dose s for common diagnostic radiographic examinations at General hospital Dutsin-Ma local Government Area, Katsina State, Nigeria. We estimated the entrance surface dose received by patients undergoing diagnostic X-ray examinations, including the entrance surface dose and effective doses for 20 patients in six types of X-ray examinations. The entrance surface dose was determined indirectly via measurements and from knowledge of X-ray output factors. We entered measurement parameters such as X-ray dose output, backscatter factor, and focus to skin distance as well as physical parameters such as mAs and kV in mathematical model. The mean for entrance surface doses and effective doses for chest (PA, AP), abdomen (AP) and skull (AP, Lateral) are 0.2432 mGy, 0.2857 mGy, 0.6331 mGy, 0.7553 mGy, 0.3220 mGy and 0.01216 mSv, 0.01428mSv, 0.07597 mSv, 0.00755 mSv and 0.00322 mSv respectively. The results obtained were compared with those published by some national and international agencies. The entrance surface dose and effective dose reported in this study are generally lower than the comparable reference dose values published in the literature. On the basis of the result obtained in this study, one can conclude that proper use of radiological parameter such as the large distance between patient and X-ray source, high tube potential and low tube current can significantly reduce the absorbed dose which has been shown in this work. When technical and clinical factors are optimized or properly used, patient doses will reduce substantially. Further studies are required for minimization of radiation doses to sensitive organs.

DOWNLOAD COMPLETE PROJECT MATERIAL

ESTIMATION OF ORGAN EQUIVALENT AND EFFECTIVE DOSES FROM DIAGNOSTIC X-RAY

Leave a Reply