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Related Experiment Video

Updated: May 19, 2026

Simulation of a Scaled Assembly Process with Collaboration of a Robotic Arm and Monitoring through a Vision System for Quality Control

Simulation of a Scaled Assembly Process with Collaboration of a Robotic Arm and Monitoring through a Vision System for Quality Control

Published on: August 29, 2025

Delivery quality assurance with ArcCHECK.

Christopher Neilson¹, Michael Klein, Rob Barnett

¹London Regional Cancer Program, London Health Sciences Centre, London, Ontario, Canada.

Medical Dosimetry : Official Journal of the American Association of Medical Dosimetrists

|August 25, 2012

Summary

Optimizing radiation therapy delivery quality assurance (DQA) with the ArcCHECK phantom shows center plans offer superior accuracy. A single center plan streamlines the DQA process, saving time and resources.

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Area of Science:

Medical Physics
Radiation Oncology

Background:

Delivery quality assurance (DQA) is crucial for accurate radiation therapy.
The ArcCHECK phantom is a tool used for DQA, but its optimal configuration requires investigation.

Purpose of the Study:

To investigate the optimization of the ArcCHECK phantom for radiation therapy DQA.
To compare the efficacy of different ArcCHECK phantom setups for DQA.

Main Methods:

170 DQA plans from 84 patients were analyzed using the ArcCHECK phantom.
Plans were categorized into 'D plans' (target on diodes) and 'C plans' (target at center).
Gamma pass rates were evaluated using various criteria (e.g., 3%/3 mm, 2%/2 mm) with and without Van Dyk criteria.

Main Results:

'D plans' showed inflated gamma pass rates due to maximum planned dose (MPD) on diodes.
Adjusting for this, 'C plans' demonstrated superior performance over 'D plans' by an average of 3.5%.
ArcCHECK streamlines DQA, reducing time and resources compared to film-based methods.

Conclusions:

A single center plan with ArcCHECK is sufficient for DQA, eliminating the need for dual plans.
The ArcCHECK phantom effectively streamlines the DQA process.
Head and neck and spinal sites showed slightly lower pass rates, potentially due to lower doses and plan gradients.