Sayan Chakraborty
Guyana
Research Article
Determination of Calibration Cycle for Computed Tomography at Cancer Institute of Guyana
Author(s): Nirvanie Amisha Sukdeo, Petal P Surujpaul and Sayan ChakrabortyNirvanie Amisha Sukdeo, Petal P Surujpaul and Sayan Chakraborty
Objective: The research aims to evaluate the optimum time for calibration cycle for the 4 slice GE lightspeed QXi CT unit. The workload and X-ray tube output were assessed in order to evaluate the performance of the X-ray tube. The Computed Tomography Dose Index (CTDI) and Dose Length Product (DLP) were the scan parameters assessed to evaluate X-ray tube output and was compared to the International Atomic Energy Agency (IAEA) standards.
Method: The CTDI phantom and a Raysafe X2 CT Calibration detector were used to obtain measured CTDI and DLP values for the common CT protocols (head, neck, sinus and chest). Peripheral CTDI phantom measurements were taken and compared to the displayed CTDI values for the scan protocols. CTDIair measurements were taken as a control and to confirm output consistency. Patient measurements were also do.. View More»
