Visualization of bone details in a novel photon-counting dual-source CT scanner-comparison with energy-integrating CT.

ABSTRACT:

Objectives

Photon-counting detector CT (PCD-CT) promises a leap in spatial resolution due to smaller detector pixel sizes than implemented in energy-integrating detector CTs (EID-CT). Our objective was to compare the visualization of smallest bone details between PCD-CT and EID-CT using a mouse as a specimen.

Materials and methods

Two euthanized mice were scanned at a 20-slice EID-CT and a dual-source PCD-CT in single-pixel mode at various CTDI_Vol values. Image noise and signal-to-noise ratio (SNR) were evaluated using repeated ROI measurements. Edge sharpness of bones was compared by the maximal slope within CT value plots along sampling lines intersecting predefined bones of the spine. Two readers evaluated bone detail visualization at four regions of the spine

SUBMITTER: Bette SJ 

PROVIDER: S-EPMC9038873 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature