Three-dimensional noise characteristics of clinical photon counting detector CT.

ABSTRACT:

Background

Since the introduction of whole-body photon-counting detector CT (PCD-CT) into clinical practice, extensive physics assessments have been conducted to elucidate its image quality advantages over energy-integrating detector CT (EID-CT) and to support its clinical adoption. However, evaluations of its three-dimensional (3D) noise power spectrum (NPS), which simultaneously quantifies in-plane and through-plane noise texture and magnitude, remain limited.

Purpose

To experimentally evaluate the 3D NPS of an NAEOTOM Alpha PCD-CT system and its dependence on scan mode, reconstruction image type, quantum iterative reconstruction (QIR) strength, mono-energy (keV) level, spiral pitch, and radiation dose.

Methods

Repeated scans of a 20 cm water phantom and a 30 cm PMM

SUBMITTER: Monsivais H 

PROVIDER: S-EPMC12505027 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature