Treatment analysis

RadCalc’s EPID module delivers TG 218 compliant pre-treatment and in-vivo calculations. Acquired in-vivo images are transmitted back through the patient to determine the incident fluence, differentiating it from all other available solutions.

RadCalc EPID for pre-treatment dosimetry - tackling risks of high error sensitivity

RadCalc reconstructs the dose from the delivered pre-treatment plan on the patient’s original planning CT, giving a direct comparison with both the intended dose from the TPS and RadCalc’s 3D dose second check.

Potential error detection

With phantom-based measurements

Data transfer corruption
Deliverability of dose
Checks TPS dose on phantom
Spends additional time on aligning and calibrating phantoms
Uses 2d planar dose measurements
Costly and time consuming

With on-board imager and RadCalc software

Data transfer corruption
Deliverability of dose
Checks TPS dose on volumetric patient image
Saves up to 20% of QA time
Uses reconstructed 3D measurements

RadCalc EPID for in-vivo dosimetry - accurate QA instead of basic measurement

In-vivo deliveries allow to reconstruct the dose delivered during the treatment, giving a direct comparison on the actual delivered dose re-constructed on the patient’s original planning CT to evaluate intra-fraction changes in the patient.

Uncertainties in dose delivery?

Patient alignment checks on x-ray
Strongly increasing risks with rising complexity of treatment
Without In-Vivo uncertainty on actual dose received by the patient

Understanding the actual dose delivered

Accurate validation:
Dose checks along the treatment
- Patient setup against treatment plan
- First fraction dose delivery vs. plan
- Patient anatomy changes
3D and EPID analysis

Play Video

Sensitivity Test of RadCalc's EPID Dosimetry System

Features

Simple

RadCalc’s EPID module utilizes the collected integrated measurements for all static and dynamic beam segments to reconstruct 3D dose on the patient’s real anatomy using RadCalc's Collapsed Cone algorithm.

Supported modalities

Supporting commercially available linear accelerators with integrated EPID panels for all treatment techniques.

True composite

Actual dose delivered is compared with both the intended dose from the TPS and RadCalc’s 3D dose reconstruction for a thorough pre-treatment QA.

Inherent sensitivity

RadCalc’s implementation exploits the inherent sensitivity of the EPID to changes in the patient making it a valuable tool for analysing deviations from the intended dose.

Play Video

Introducing RadCalc's EPID module

Benefits

Timesaving

Inherent LINAC-EPID automation and integration saves time and effort for data capture.

Thorough QA

In-vivo EPID monitoring to verify patient setup errors, patient anatomy changes and identify machine errors.

Simple QA for complex treatments

In-air EPID based pre-treatment QA presented directly on patient anatomy helps identify dose delivery errors against treatment plans.In-air EPID based pre-treatment QA presented directly on patient anatomy helps identify dose delivery errors against treatment plans.