Results of a multicenter 4D computed tomography quality assurance audit: Evaluating image accuracy and consistency.

ABSTRACT:

Background and purpose

4D Computed Tomography (4DCT) technology captures the location and movement of tumors and nearby organs at risk over time. In this study, a multi-institutional multi-vendor 4DCT audit was initiated to assess the accuracy of current imaging protocols.

Materials and methods

Twelve centers, including thirteen scanners performed a 4DCT acquisition of a dynamic thorax phantom using the institution's own protocol with the in-house breathing monitoring system. Five regular and three irregular breathing patterns were used. Image acquisition and reconstruction were followed by automated image analysis with our in-house developed 4DCT QA program (QAMotion). CT number accuracy, volume deviation, amplitude deviation, and spatial integrity were assessed per pattern

SUBMITTER: Burghelea M 

PROVIDER: S-EPMC10485145 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature