Field Safety Notice
Subject: Structure names with special characters can cause wrong analysis results
Product affected: myQA iON; Article No.: MQ10-000, version 2.1
Function affected: Analysis results
Type of Action: Ensure structure names use correct characters
FSCA-identifier: CA-2025-003
Date: 2025-03-24
As a result of continuous monitoring of the performance of our products, we have identified a potential safety issue that may affect the performance of the myQA iON software under certain circumstances described below. This Field Safety Notice is intended to provide you with details about the problem and actions to be taken by you to avoid the occurrence of the identified error in myQA iON.
We are working on a correction and will provide more information on resolving this issue in the next version of myQA iON, expected June 2025.
Problem description:
In myQA iON, wrong analysis results can occur if the user creates two structures with the same name, except for one differing by a special character.
Example: One structure is named “PTV_Test” and another structure is named “PTV_Test+”.
During analysis, one of the two structures will be affected, while the other remains valid. For the affected structure, the analysis can result in the following:
- Different names in different places in myQA iON.
- Wrong display of results in the DVH graph.
- Incorrect results in Dose Statistics and Clinical Goals.
Please note, these wrong results will only affect the individual calculations of one of the structures; the overall passing rate is not affected.
Actions to be taken:
Do not use any of the following special characters in structure names: % \ / : * ? “ < > | +
Some TPS systems may automatically shorten names during file export. Verify structure names are correctly imported.
Please reach out in case of any questions or concerns.
How can I contact the IBA Dosimetry Service and Support team?