Diagnostic CT organ dose estimation in whole-body PET/CT examinations–comparison of a patient-specific monte carlo approach and a computational phantom-based CT dosimetry tool

Compared to the patient-specific Monte Carlo CT dosimetry software ImpactMC, the computational phantom-based dosimetry tool NCICT could provide organ dose estimates within ± 22% for whole-body CT scans acquired with TCM. If better accuracies are required, patient-specific Monte Carlo simulations are recommended. Depending on the organ of interest and the specific CT scanner, SSDE may be a good first estimate of the organ dose.