Spectral ultrahigh-resolution photon-counting CT for coronary stent imaging: evaluation in a dynamic phantom.

ABSTRACT:

Background

We compared ultrahigh-resolution (UHR) photon-counting detector-computed tomography (PCD-CT) and spectral post-processed images for coronary stent visualization in a dynamic, anthropomorphic, and circulatory phantom.

Materials and methods

Ten coronary stents were scanned at 60, 80, and 100 beats per min (bpm) using UHR-spectral PCD-CT (96 × 0.2 mm collimation). Reconstructions included UHR (0.2 mm), downsampled (0.6 mm), and spectral post-processed images (0.4 mm), including virtual monoenergetic images (VMI; 45-100 keV), lumen-preserving images, and iodine maps (IM). Objective quality was assessed by measurable stent lumen visibility and stent strut width overestimation factor, compared to nominal strut width. Subjective quality was rated using a 4-point Likert s

SUBMITTER: Hagar MT 

PROVIDER: S-EPMC12672982 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature