The comparative analysis of various methods of CT effective doses estimation

Abstract

Comparative analysis of spiral CT effective dose evaluation (thorax exams) on the basis of two estimation methods and techniques: with use of anthropomorphic body phantom and thermoluminescent detectors or using results of CT dose index (CTDI) measurements is presented. It is shown that estimates based on anthropometrical body phantom approximately 1,5 - 1,7 times exceed those received on the basis of CTDI measurements for multislice computer tomography without dependence on CT type. Effective dose estimates for single-slice CT are practically equal for both methods discussing. © 2009 Springer-Verlag.