Assessment of Patients and Staff Radiation Doses in Cardiac Catheterization Procedures

Abstract

The main objective of this study is to measure and assessment the radiation doses incurred by medical staff and patients during cardiac catheterization procedures in Alshaab teaching hospital and Ahmed Gasim teaching hospital Khartoum state - .Sudan A total of data patients (212) procedures divided in two groups 161 CA procedure and 51 PCI procedure was carried out in this study, patient doses was calculated with depended patient body characteristics and exposure parameters using dose area product (DAP) meters. The patient age was ranging from 21 to 85 years old. The mean values of exposure parameters were 86.17±8.32KVp, 5.59±0.844mAs, the mean duration fluoroscopy time was 6.87±2.48 mentis, the number of films per procedure was 9.17±4.53 films respectively and the mean of dose values was 917.07±68.174mGy, all the investigations were performed in same centre and department. The DAP values in this study was relatively lower than the previous studies in the literature. Because they can be attributed to the use of high voltage .(KVp), long distance of focal spot side in all examinations While staff doses was measured at (61) procedures, (43) to diagnostic (CA) and (18) to therapeutic percutaneous Coronary Interventional (PCI) procedure using thermoluminsences dosimeters (TLDs) (LiF:Mg,Cu,P) at three anatomic locations (waist, chest and hand) for main operator and the chest to the assistant operator. The mean radiation doses to the main operator's were 0.0608±0.0356mGy (waist), 11 0.1127±0.0516mGy (chest), and 0.2125±o.1193mGy (hand) respectively and for the assistant operator's chest was 0.0134±0.0072mGy depending on TLD method. The results revealed that the doses received to the patient and staff higher radiation doses during PCI procedures relative to CA procedures. Operator hand dose was most exposed than other organs, assistant dose lower than main operator because main operator acts a barrier between assistant and the scatter radiation according to their .position during the procedure The staff doses measured in this study was lower than the previous reported studies in literature. Because attributed to technical reduction the scattering radiation in all .examinations