Part of the Digital Twin product family
From machine measurements to patient dose consequences.
Current QA tells you output, flatness, and symmetry drifted — but not whether it matters clinically. SIMAC Dose Calculation answers that, using your machine's current state.
A dose-impact analysis tool that estimates how machine state, beam-model changes, and QA deviations affect dose delivery and target dose distributions — by recalculating against a continuously updated Digital Twin LINAC. Powered by the patent-pending SIMAC Beam Model. Available in a Standard version today, with an Advanced version coming soon, and can be purchased alongside the education products for training.
What you can do
- Recalculate a plan using the machine's current state, not its commissioned state
- Quantify the cumulative dose effect of QA deviations and trends
- Propagate a single — or multiple — QA failures through to a dose distribution
- Run an FMEA on your QA program using patient dose to assess clinical risk
What's included
- Standard dose calculation — up to a four-field box on a user-defined phantom
- Configurable MUs and SSD per beam
- Beam configuration imported from SIMAC Machine
- Builds a physics-based dose kernel
- Can be purchased with the education products for training
The workflow
Dose Calculation is the last step of a loop that starts in SIMAC Quality Assurance.
SIMAC Quality Assurance pulls your real linac QA data in over the TotalQA® API.
The beam model is matched to what your machine is outputting today, not its commissioning baseline.
Recalculate the plan and compare: is the dose your machine would deliver what you expect?
If it matches, keep treating. If it does not, go back and root-cause where the drift is coming from.
Two versions
Standard ships today. Advanced extends the same engine to modulated delivery and your real patient anatomy.
- Up to a four-field box, rectangular phantom
- Configurable field sizes, MUs and SSD per beam
- Beam configuration imported straight from SIMAC Machine
- Advanced models covering VMAT treatments
- CT DICOM import — your real patient anatomy
- Verify actual treatments against any drift in the machine
Also available for training. SIMAC Dose Calculation can be purchased alongside the education products, so students and residents can see how machine drift shows up in a dose distribution.
What it does — and doesn't do today
SIMAC Dose Calculation is a second check and decision support tool — deliberately focused. It is not a treatment planning system.
- ›Recalculates dose based on the machine's current state
- ›Quantifies cumulative QA deviations as a dose effect
- ›Supports risk-informed, machine specific dose verification
- ›Standard: rectangular fields on a flat surface, up to four fields
- ›No MLC, 2D modulation, DICOM import or heterogeneity correction in Standard — VMAT models and CT DICOM import arrive with Advanced
- ›Forward calculation only — no plan optimization, no contouring
- ›A second dose check tool, not a treatment planning system
SIMAC Machine is the base product.
Start with SIMAC Machine — the virtual linac matched to your accelerator. Add the commissioning water tank, Quality Assurance, or Dose Calculation individually, or take all of them together as SIMAC Digital Twin.
Two product families, one platform.
SIMAC Training products teach the machine — every one of them includes SIMAC Learning and the SIMAC Machine Education Edition. SIMAC Digital Twin products model your machine — sold per machine, per beam model, and all built on SIMAC Machine as the base.
Includes SIMAC Learning + SIMAC Machine or free SIMAC access
Per machine, per beam model · requires SIMAC Machine · buy as a bundle
Standard: four-field box calculation on a rectangular phantom, configurable field sizes, MUs and SSD per beam, with the beam configuration imported straight from SIMAC Machine. Advanced — VMAT models and CT DICOM import — is coming soon. Can also be purchased with the education products.
A treatment planning system. It is a second check tool — forward calculation only, no optimisation, no contouring — and it requires SIMAC Machine.