Utility of photon-counting detectors for MV-kV dual-energy computed tomography imaging.

ABSTRACT:

Purpose

High soft-tissue contrast imaging is essential for effective radiotherapy treatment. This could potentially be realized using both megavoltage and kilovoltage x-ray sources available on some therapy treatment systems to perform "MV-kV" dual-energy (DE) computed tomography (CT). However, noisy megavoltage images obtained with existing energy-integrating detectors (EIDs) are a limiting factor for clinical translation. We explore the potential for non-spectral photon-counting detectors (PCDs) to improve MV-kV image quality simply by equally weighting all MV photons rather than up-weighting the less informative, lower contrast high-energy photons as in an EID.

Approach

Three computational methods were applied to compare non-spectral PCDs with EIDs in MV-kV DE imaging. A

SUBMITTER: Jadick G 

PROVIDER: S-EPMC11670364 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature