CT technology marked a great advancement in diagnostic radiology that requires higher level of radiation exposure than conventional x-ray radiography (Brenner and Hall , 2007 . X-ray is a form of ionizing radiation that can cause biological damage by knocking-off the electrons in a particular biomolecule , thereby producing free-radicals . These radicals may interact with DNA molecules or bases of the cell resulting to mutation . Mutation on the other hand , may lead to the production of cancers cells (Brenner and Hall , 2007 . This...











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