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.

ABSTRACT:

Background

Studies evaluating the impact of advances in CT dosimetry tools on CT organ dose estimations are often limited to a comparison with TLD measurements in anthropomorphic phantoms or a comparison of different dosimetry tools using computational phantoms and CT examinations performed at radiology departments. This study evaluates organ dose estimations obtained using a patient-specific Monte Carlo simulation and a computational phantom-based dosimetry tool for whole-body PET/CT examinations. In addition, the correlation of organ doses with the size-specific dose estimate (SSDE) was investigated.

Methods

Using the Monte Carlo software ImpactMC, patient-specific organ doses were simulated in 100 adult patients using whole-body CT scans acquired on a Siemens Biograph mCT

SUBMITTER: Verfaillie G 

PROVIDER: S-EPMC12753603 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature