ProSoma Core – MC plan, check, and logfile analysis

Monte Carlo accuracy and ProSoma efficiency for busy CTsim and planning departments

Overview - Work smart, work fast

If your plan and MU check workload are high, or your expensive planning workstations are overloaded, and you value the highest level of dose accuracy – ProSoma® Core will provide a practical and very cost-effective option for your clinical department.

Available as an upgrade to ProSoma v-sim, or as a standalone independent system to complement existing planning and dose check systems. Either way, ProSoma Core will bring streamlined workflows that will save money in not having to purchase additional expensive planning workstations or other plan check software.

Monte Carlo accuracy

Using an established Monte Carlo model means you will have the most accurate method of dose calc compared to existing planning systems. With minimal beam commissioning, beam models provided and an optional beam commissioning service from OSL, you can be up and running in a few days from installation.

Rapid single-step - simulate and calc

For all static beam techniques, such as palliative, POPs and breast planning, ProSoma Core performs a primary calculation of MUs and dose in 3D and can dramatically reduce overall time taken as clinicians can simulate and then instantly approve and sign off plans / calcs resulting in an efficient, single step process from simulation - calc – approval – sign off. Add no more than 1 minute to your existing simulation procedure.



Secondary plan and MU check

Interactive: MC engine vs TPS

Complex plans such as IMRT, VMAT, stereotactic, can be calculated on 3D anatomy by the Monte Carlo dose engine providing the highest-level accuracy secondary plan and MU check. Interactively check plan results in 3D patient anatomy. As a Monte Carlo model, it provides definitive answers to non-measurable difficult areas such as head and neck and chest regions that are superior to older TPS algorithms such as collapsed cone.

Verification of daily dose delivery

Not only is ProSoma Core a plan check system, but it also calculates the actual dose delivered by the treatment machine on any day, showing the effect of the delivery on the patient’s treatment. It provides extensive analyses and a verification report of dose differences and errors.

ProSoma can automate adaptive dose re-calculation using daily cone beam CT data (CBCT) brought together with the planning CT and RT data to perform deformable image registration of the two CTs and transfer the RT Structure Set and RT Plan onto the deformed planning CT. It will then calculate the new dose distribution on that CT. DVHs and various dose parameters will be calculated automatically taking into account the current patient anatomy. As a result of those calculations, a pdf report will be generated and be available for review in ProSoma or via the ProSoma Web Portal.

All calculations are performed and reviewed in 3D, and notifications of results can be sent via e-mail for efficient task management.


Log file evaluation

The machine log file analysis provides QA of another source of potential error in radiotherapy: It checks if actual machine parameters during treatment delivery match planned machine parameters in the RT Plan. For this purpose, ProSoma Core can read machine log files from Varian and Elekta linacs which contain physical machine parameters recorded during treatment and then compares the resulting fluence images or 3D dose distributions to the fluences or doses resulting from the RT Plan. Parameters found in machine log files include dose rate, gantry and collimator angle, jaw and MLC positions. The idea behind ProSoma Core’s machine log file analysis is to detect if new log files have been written by the treatment machine and then automatically trigger recalculations using those files and the respective CT and RT data.

The 3D dose computed from log file data may now be compared either to the TPS dose or to the ProSoma Core computed MC reference dose on the planning CT. In this way, it is possible to isolate the differences resulting from log file deviations and ignore differences resulting from different calculation algorithms.

Benefits of ProSoma Core

  • Remove workload from expensive treatment planning workstations
  • Save time, with fewer steps, as only one system for both beam simulation and secondary plan & MU check
  • Improve department efficiency by performing beam simulation and primary plan/MU calc on ProSoma – for palliative, breast, POPs and non-IMRT/VMAT techniques
  • Familiarity – no need to learn a new system in existing ProSoma departments
  • Extremely cost effective across a ProSoma network
  • Minimal time to commission – beam models provided, minimal beam measurements required
  • Also available as a standalone secondary plan check solution


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