The 3DVH Method The 3DVH Advantage
3DVH is a next generation patient dose verification
and analysis system. 3DVH can use existing IMRT or
rotational delivery measurements (e.g. MapCHECK™ or
ArcCHECK™) to perform 3D patient dose and DVH QA,
effectively eliminating dose-to-phantom guesswork.
Using conventional QA measurements, 3DVH predicts the impact on patient dose and DVH. 3DVH processes the data from a phantom-based geometry and translates to a heterogeneous patient dose-based geometry using a patent pending algorithm called “Planned Dose Perturbation” (PDP™).
Using conventional QA measurements, 3DVH predicts the impact on patient dose and DVH. 3DVH processes the data from a phantom-based geometry and translates to a heterogeneous patient dose-based geometry using a patent pending algorithm called “Planned Dose Perturbation” (PDP™).
3DVH = Patient relevant Dose QA
- 3DVH presents patient DVH for clinically relevant dose & DVH QA
- Measured phantom dose differences are transformed to patient dose geometry
- Patent-pending PDP™ algorithm predicts 3D dose in patient
- Direct DVH, slice, and point absolute dose comparisons
- Automatic depth, SSD, and patient geometry physics corrections
- All major Linac/MLC/energy models included - no beam modeling!
Summary
3DVH avoids the uncertainty and overhead of a
duplicate dose calculation engine and introduction of
new errors.The 3D patient planned dose is perturbed using the errors measured in conventional QA.
This is the 3DVH method.
Key Benefits
- DVH Plan on Patient
- Use MapCHECK and ArcCHECK high-resolution IMRT QA results to estimate impact on
Patient Dose and DVH - Universal Comparisons
- Plan 1 vs. Plan 2 for a given TPS
- TPS 1 Plan vs. TPS 2 Plan using any TPS
- Modality “X” vs. Modality “Y”
- More... -
Load CT images
- See the planning CT image set as the background to the dose and dose differences - Save Data
- Save newly created PDP dose grid data as an RT Dose - Customizable Quick Stats
- Report user-defined DVH points and ROI dose statistics per structure
CT/Dose overlay
- Plan documentation matches QA documentation
- Detailed dose information for anatomic regions-of-interest
- Understand any patient plan in clinical detail
- Make informed decisions for greater comfort levels
- Automatic depth, SSD, and patient geometry physics corrections
- Analyze in greater detail when plan quality is questioned
- See cold and hot spots impact to DVH
> See actual dose fall off in target
> See actual dose impact to critical structures
> See why more stringent QA is required today
The 3DVH Method