A systematic task-based image quality assessment of photon-counting and energy integrating CT as a function of reconstruction kernel and phantom size.

ABSTRACT:

Background

Image quality of photon-counting and energy integrating CT scanners changes with object size, dose to the object, and kernel selection.

Purpose

To comprehensively compare task-generic image quality of photon-counting CT (PCCT) and energy integrating CT (EICT) systems as a function of phantom size, dose, and reconstruction kernel.

Methods

A size-variant phantom (Mercury Phantom 3.0) was used to characterize the image quality of PCCT and EICT systems as a function of object size. The phantom contained five cylinders attached by slanted tapered sections. Each cylinder contained two sections: one uniform for noise, and the other with inserts for spatial resolution and contrast measurements. The phantom was scanned on Siemens' SOMATOM Force and NAEOTOM Alpha at

SUBMITTER: Bhattarai M 

PROVIDER: S-EPMC10796834 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature