RayStation 2.5, 3.0, 3.5, 4.0, 4.5, 4.7, 5.0 and 4.3 (InverseArc 1.0) -- Radiation Therapy Treatment Planning System RayStation is a software system designed for treatment planning and analysis of radiation therapy. The treatment plans provide treatment unit set-up parameters and estimates of dose distributions expected during the proposed treatment, and may be used to administer treatments after review and approval by the intended user. The system functionality can be configured based on user needs.

Reason: RaySearch became aware of the problem as it was discovered in cooperation with a customer experimenting with the dose calculation on a phantom. The correction concerns two issues found with the dose calculation when using a region of interest (ROI) of type Fixation or Support with material override within the patient outline (External ROI) in RayStation 2.5, 3.0, 3.5, 4.0, 4.5, 4.7, 5.0 and 4.3 (InverseArc 1.0).

Code information: Build Numbers: 2.5.0.144, 2.5.1.89, 3.0.0.251, 3.5.0.16, 3.5.1.6, 4.0.0.14, 4.0.1.4, 4.0.2.9, 4.0.3.42, 4.3.0.14, 4.5.0.19, 4.5.1.14, 4.5.2.7, 4.7.0.15, 4.7.1.10, 4.7.2.5, 4.7.4.4, 4.7.5.4, 5.0.0.37, 5.0.1.11 or 5.0.2.35.

Distribution pattern: Nationwide distribution