Ultra-high resolution CT angiography for the assessment of intracranial stents and flow diverters using photon counting detector CT.

ABSTRACT:

Background

The patency of intracranial stents may not be reliably assessed with either CT angiography or MR angiography due to imaging artifacts. We investigated the potential of ultra-high resolution CT angiography using a photon counting detector (PCD) CT to address this limitation by optimizing scanning and reconstruction parameters.

Methods

A phantom with different flow diverters was used to optimize PCD-CT reconstruction parameters, followed by imaging of 14 patients with intracranial stents using PCD-CT. Images were reconstructed using three kernels based on the phantom results (Hv56, Hv64, and Hv72; Hv=head vascular) and one kernel to virtually match the resolution of standard CT angiography (Hv40). Signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR) measure

SUBMITTER: Ludovichetti R 

PROVIDER: S-EPMC12573315 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature