Physical evaluation of an ultra-high-resolution CT scanner.

ABSTRACT:

Objectives

To evaluate the technical performance of an ultra-high-resolution CT (UHRCT) system.

Methods

The physico-technical capabilities of a novel commercial UHRCT system were assessed and compared with those of a current-generation multi-detector (MDCT) system. The super-high-resolution (SHR) mode of the system uses 0.25 mm (at isocentre) detector elements (dels) in the in-plane and longitudinal directions, while the high-resolution (HR) mode bins two dels in the longitudinal direction. The normal-resolution (NR) mode bins dels 2 × 2, resulting in a del-size equivalent to that of the MDCT system. In general, standard procedures and phantoms were used to perform these assessments.

Results

The UHRCT MTF (10% MTF 4.1 lp/mm) is twice as high as that of the MDCT (10% M

SUBMITTER: Oostveen LJ 

PROVIDER: S-EPMC7160079 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature