Optimizing CT imaging: a cutting-edge validation of quality assurance across scanners

Introduction: A comprehensive test on a dual- and multi-slice CT scanner was carried out using in-house CT scanning with a CTDI phantom/test tool following the American Association of Physicists in Medicine’s recommended methods to validate quality assurance of simulation CT and diagnostic CT. Aim: To carry out the mechanical and radiation dose verification QA tests for the Siemens Emotion Duo CT simulator and GE CT as per the AERB QA protocol. Materials and methods: The Siemens Emotion Duo is a twin-slice CT scanner that uses UFC dual-detector technology to provide sub-second scanning for a wide range of clinical applications. The precision-killed PMMA (polymethyl methacrylate) nested CTDI phantom has a 32 cm diameter body phantom and a 16 cm diameter head phantom. For the positioning of the PMMA for the CT ion chamber, the phantom is built with a central hole and either peripheral hole (four in the head phantom). Results: Comprehensive QA and validation of results are necessary to obtain baseline data for CT virtual simulation and diagnostics. The results of QA data for CT equipment are compared and found to be within acceptable tolerance limits. Conclusion: The results are unaffected by differences in collimations, reconstruction algorithms, or spectral energy because the data were collected over time on various CT scanners using the Piranha dosimetry.