Abstract
Our study aims to determine diagnostic reference levels (DRL) for chest front examination in postero anterior (PA) for optimizing patient entrance surface dose (ESD) and dose-area product (DAP) of patients in west of Cote d’Ivoire. 90 patients from three hospitals undergoing conventional radiology were considered. The ESD and DAP for each patient were obtained during chest radiography (PA) examination. The measurements were performed with the device call Dose-Area Product-meter (DAP-meter) with brand Diamentor M4-KDK, type 11017. The DRL were obtained in applying the 75th percentile statistical method to the obtained ESD and DAP. The obtained DRL in ESD for chest radiography for all rooms is 0.40 mGy and in DAP is 54.85 cGy⋅cm2. Our DRL for ESD is higher than those obtained in Abidjan District and in other countries like UK and Cameroon. Our DRL for DAP is higher than those from Abidjan and all other countries for which a similar study was made. The comparison of these values to those from Abidjan and other countries, shows us that radiology technicians can make efforts to choose radiological parameters to reduce ESD. They must use convenable the X-rays tube to reduce DAP by reducing the patient exposure surface.
Highlights
Our study aims to determine diagnostic reference levels (DRL) for chest front examination in postero anterior (PA) for optimizing patient entrance surface dose (ESD) and dose-area product (DAP) of patients in west of Côte d’Ivoire. 90 patients from three hospitals undergoing conventional radiology were considered
For all the centers of our study, for the examination of the frontal thorax (PA), the DRL in ESD equal to 0.40 mGy (Table 2). The comparison of this value with that obtained in Abidjan for five (5) centers (0.22 mGy) [3], indicates that the DRL in ESD in west of Côte d’Ivoire is larger than that obtained in Abidjan in the south of the same country (Figure 5)
By comparing the DRL in ESD from our study, obtained in the West of the Côte d’Ivoire to those obtained by the Institute for Radiation Protection and Nuclear Safety (IRNS) in France, the International Atomic Energy Agency (IAEA) and other countries (Figure 9, Figure 10) we find that our value is equal to that obtained in Nigeria and by the IAEA, close to those obtained in Iran and Cameroon
Summary
Today the determination of the DRL is part of the technical cooperation project of the International Atomic Energy Agency (IAEA), n RAF 9059 [2]. It is within this framework that we are inscribing our work to determine the DRL in western Côte d'Ivoire for three (3) radiology rooms for frontal chest examination for 90 patients. The reading of the dose at the entrance was made from a Harshaw 4500 reader
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