A comprehensive quality assurance procedure for 4D CT commissioning and periodic QA.

ABSTRACT:

Purpose

The 4D computed tomography (CT) simulation is an essential procedure for tumors exhibiting breathing-induced motion. However, to date there are no established guidelines to assess the characteristics of existing systems and to describe meaningful performance. We propose a commissioning quality assurance (QA) protocol consisting of measurements and acquisitions that assess the mechanical and computational operation for 4D CT with both phase and amplitude-based reconstructions, for regular and irregular respiratory patterns.

Methods

The 4D CT scans of a QUASAR motion phantom were acquired for both regular and irregular breathing patterns. The hardware consisted of the Canon Aquilion Exceed LB CT scanner used in conjunction with the Anzai laser motion monitoring system.

SUBMITTER: Polizzi M 

PROVIDER: S-EPMC9680562 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature