Survey of Patients Radiation Doses in Computed Tomography Chest Imaging: Proposal of Diagnostic Reference Level
Journal Title: Scholars Journal of Applied Medical Sciences - Year 2015, Vol 3, Issue 2
Abstract
Advances in CT system technology have improved the diagnosis of many clinical conditions and consequence new investigation methods emerged. However, CT procedures expose the patients to high an avoidable radiation doses which may increase the individuals lifetime radiation risk of developing cancer. This study was intended to evaluate patient doses during chest CT procedures in a certain radiological hospitals in order to establish a local diagnostic reference level (DRL). A total of 78 CT chest procedures were performed during one year. The range of patient dose per CT procedure was 126.0 mGy.cm to 1104.0 mGy.cm per chest procedure. The CTDIvol ranged between 3.0 mGy to 20 mGy per procedure. Patient dose variation attributed to CT modality and image acquisition protocol. Patients exposed to a higher radiation doses in 64 slices compared to other two modalities due to the use of sequential technique at the later one. Diagnostic reference level was proposed for chest CT procedures. Keywords: Chest imaging, Radiation dose, Medical exposure, DRL, Computed tomography.
Authors and Affiliations
Mohamed Yousef, Abdelrahman M. Elnour, Hiba Omer, Abdelmoneim Sulieman
Keywords
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