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Related Experiment Video

Updated: Oct 21, 2025

Neutron Radiography and Computed Tomography of Biological Systems at the Oak Ridge National Laboratory's High Flux Isotope Reactor

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Design and implementation of a practical quality control program for dual-energy CT.

Crystal A Green¹, Justin B Solomon², Kenneth J Ruchala³

¹Department of Radiology, Clinical Imaging Physics Group, Duke University Medical Center, Durham, North Carolina, USA.

Journal of Applied Clinical Medical Physics

|September 2, 2021

Summary

A new dual-energy computed tomography (DECT) quality control (QC) program offers a practical solution for ensuring imaging accuracy. This automated system uses a specialized phantom and software for reliable DECT oversight in clinics.

Keywords:

calcium quantification dual-energy CT iodine quantification quality control spectral CT

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Area of Science:

Medical Imaging
Radiology
Quality Control

Background:

Routine quality control (QC) for dual-energy computed tomography (DECT) is currently lacking.
There is a need for standardized and automated QC methods for DECT.

Purpose of the Study:

To develop and evaluate a novel, routine DECT quality control (QC) program.
To address the deficiencies in current DECT QC procedures.

Main Methods:

Development of a practical phantom with iodine and calcium inserts in a water-equivalent background.
Implementation of a clinically relevant DECT acquisition, reconstruction, and postprocessing protocol.
Creation of fully automated analysis software for quantitative data extraction and trend analysis.

Main Results:

The DECT QC program was successfully tested on GE and Siemens scanners over a 3-month period.
Automated software accurately identified regions of interest and stored quantitative data.
The program demonstrated convenience and dependability for routine DECT imaging oversight.

Conclusions:

The developed DECT QC program provides a practical and reliable tool for clinical use.
The automated system facilitates consistent monitoring and trend analysis of DECT imaging performance.
This program addresses the need for robust QC in DECT, improving diagnostic accuracy.