Encephalon 3D meets current challenges in SRS QA

31July 2020

‘’We’ve previously used anthropomorphic head phantoms with varying measurement inserts/devices and calibration laboratory SRS phantoms to evaluate our SRS platform. The limitation of these approaches has been the inability to get not just dose information from multiple targets but the inability to get comprehensive 3D dose distribution information to multiple targets in a single plan.

I am an impressed customer and grateful physicist, grateful to have such a comprehensive tool to evaluate our most important and critical type of treatment delivery, SRS to multiple lesions at one time.

Most important to our physician team, we received delivered DVH evaluation of each of our targets and also received geometric evaluation of the sub-mm variance between the centroid of deposited 3D dose and predicted dose.


With the Encephalon 3D phantom, we can perform a myriad of tests with one plan delivery to one phantom.


RTsafe made the process so easy.


We could not be happier with this product on the market. 


We’ve lacked the ability to evaluate a real clinical delivery of 3D dose to multiple off-axis targets sharing a single isocenter with one independent tool.  But now we can!


This information has allowed us to better tune appropriate target margins for varying target radii from isocenter and unparalleled feedback with how well our system can hit multiple targets.

To us, this kind of 3D dose feedback is a major step forward for the world of QA.’’

Jason Edwards, MS, DABR, CMD

Manager of Medical Physics and Dosimetry, Cancer Institute

Radiation Safety Officer – Cancer Institute

Prisma Health–Upstate

Cancer Institute – Radiation Oncology

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About RTsafe
RTsafe is a medical technology company that has developed a unique approach to quality assurance that significantly enhances the safety and accuracy of radiotherapy for cancer and other medical conditions. It combines proven expertise in medical physics with highly accurate 3D printing technology to create pseudo‐in‐vivo dosimetry phantoms towards End‐to‐End commissioning, benchmarking and patient‐specific quality assurance in SRS, IMRT, VMAT and SBRT applications. The anatomically accurate effigies enable medical professionals to plan more precise treatment interventions for each individual patient and help radiotherapy technology innovators to fine‐tune their products. The result is more effective individualized therapy and reduced patient risk. For more information, visit

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