Subject: myQA SRS DICOM Data X-Profile appears to shift sideways midway
Products affected: myQA Patients
Function affected: Gamma Pass Rate
In myQA (2022-001 to 2025-001), when the DICOM RT Dose data is imported into myQA Patients with the myQA SRS Arbitrary Plane tab, the X-Profile appears to shift sideways in the midway.
This shift might be influenced by the voxel size in the original dose grid and can approximately be 1/2 of the voxel size in some cases. Please note, this shift impacts the Gamma Pass Rate.
Importing a DICOM RT Dose into myQA Patients with the Orthogonal tab (see Section 2.6.3. in myQA Patients Instruction for Use) is not affected by the former shift. To extract the dose on cardinal planes the use of the Orthogonal tab is therefore recommended.
If you have any questions, please reach out to the IBA Dosimetry Service team.