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Optimization of Radiation Dose in Abdominal using Computerized Tomography

Show simple item record ElNour, Abdelrahman Mohamed Supervisor-Abdelmoneim Adam Mohamed 2013-11-03T13:37:46Z 2013-11-03T13:37:46Z 2009-01-01
dc.identifier.citation ElNour,Abdelrahman Mohamed.Optimization of Radiation Dose in Abdominal using Computerized Tomography/Abdelrahman MohamedElNour;Abdelmoneim Adam Mohamed.- Khartoum : sudan university of science and technology,Medical Radiologic Sciences,2009.- 89p. : ill . ;28cm .- M.Sc. en_US
dc.description Thesis en_US
dc.description.abstract Abdominal diagnose CT abdomen scan have diseases. contributed However greatly the to radiation exposure to the patient is significantly higher compared with other radiological examinations. While the benefits of CT exceed the harmful effects of radiation exposure in patients, increasing radiation doses to the population have raised a compelling case for reduction of radiation exposure from CT. In Sudan, there has been a remarkable increase in the number of CT examinations being performed. Therefore, radiation dose optimization is mandatory because of the risks associated with exposure to radiation The purpose of this study is to optimize the radiation dose, estimate the effective dose and radiation risk during adult computed tomographic CT abdomen. A total of 83 patients referred to Al-Ribat University Hospital (RUH) in the period of study with abdominal disturbances. Data of the technical parameters used in CT procedures was taken during (May - October, 2009). The patients were divided in two groups: control group (53patients) were performed with the own department protocol using multislice CT (MSCT) 16 slice (Siemens Sensation); and dosimetry group (30 patients). Optimization was achieved through; the design of dose efficient equipment, the optimization of scan protocol and improvement of referring criteria. Organ and surface dose to iii specific radiosensitive organs was carried out using software from National Radiological Protection Board (NRPB). The mean age was 45.4±18.1 years while the mean weight was 67±Kg. The DLP was 288.25 and CTDIvol was 9.7 mGy. Patient effective doses were 13.5 mSv before the optimization. Conversely, this was reduced to 4.3 after dose optimization. Estimated radiation risk is 742 per million conversely the risk was reduced to 237 per million. Dose optimized protocol lowered the effective doses to 31.9%. The study has shown a great need referring criteria, continuous training of staff in radiation doses optimization concepts. Further studies are required in order to establish a reference level in Sudan. en_US
dc.description.sponsorship sudan university of science and technology en_US
dc.language.iso en en_US
dc.publisher sudan university of science and technology en_US
dc.subject radiolation en_US
dc.subject dose en_US
dc.title Optimization of Radiation Dose in Abdominal using Computerized Tomography en_US
dc.type Thesis en_US

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