Scintillation Detectors

Overview

Selecting the optimal dose detector to perform quality assurance (QA) measurements in radiotherapy is challenging, especially with the introduction of modern radiotherapy techniques such as adaptive radiotherapy, small fields dosimetry, ultra-high dose-rates and advanced multi-target procedures.

At Medscint,they have developed a family of small water-equivalent plastic scintillation dose detectors that minimally interfere with ionising radiation, the HYPERSCINT^®.

The scintillator in our patented detector converts accumulated radiation dose into light, which is transmitted via optical fibre to a Medscint reader. The reader analyses the light spectrum and converts it into digital data. These measurements are processed and displayed in real time on the software interface—delivering precise, instantaneous readings at one or multiple points simultaneously.

HYPERSCINT RP-200

A real-time, multi-point-ready and versatile turnkey dosimetry tool leveraging all the advantages of plastic scintillators. This is the solution for time-resolved dosimetry of motion / gated applications (ex. Adaptive-RT, MR-LINAC), small fields and multi-met E2E testing; as well as the most challenging custom research projects.

HYPERSCINT RP-FLASH

The 2nd Gen Ultra-High-Speed Plastic Scintillation Dosimetry Solution is designed for FLASH (Ultra-High Dose-Rate – UHDR) applications in radiotherapy. Once calibrated at a conventional dose-rate, it precisely measures the dose-per-pulse, average dose-rate, and integrated dose for precise QA of the most innovative FLASH irradiators out there.

HYPERSCINT™ technical advantages

• Sub-millimetric size. Detector dimensions are ideal for small fields
• Multi-points. Dose measurements at multiple positions
• MR-Compatible. Accurate dosimetry even in strong magnetic fields
• Energy independence. Including multiple modalities >100keV

• Angular independence. Including parallel and perpendicular orientations.
• High dose rate linearity. Wide linear dynamic range
• Water-equivalent material. No perturbation of the radiation field
• Real-time dosimetry. Instant dose measurements for dynamic procedures

• Flexible probe design. High-performance optical fibre construction
• Robust stem calibration. Complete subtraction of the stem components
• Robust to radiation damages. Can absorb kGys before seeing significant effects
• Low dependence on temperature. The spectral information also enables full T° correction

Selecting the right dosimeter is key

Modern irradiation fields get smaller, the intensity and shape can be modulated over time, and it is now possible to use multiple treatment modalities for more personalized cancer treatments.

The introduction of these new techniques enables medical physicists to conduct exciting new projects in radiotherapy. Though opportunities are real, developing or finding the right dosimeter to match the performance of this modern equipment can be a challenge, especially in a time-limited context.

Scintillation Dosimetry

Scintillation QA Detectors

When excited by ionizing radiation, a scintillator has the particularity to emit an optical photon source proportionally to the received energy within nanoseconds.

An effective way to extract the dose deposition information within the scintillator volume is to funnel the photon beam to a precision measurement system via an optical fibre.

Plastic Scintillation Detectors

The plastic scintillator material used by Medscint is water-equivalent, meaning it doesn’t interfere with ionizing radiation during the energy deposition process. This key advantage makes it the ideal dose detector for a multitude of modalities including electron and photon MV as it provides dose measurement as if it is deposited in water.

With its innovative hyperspectral approach, Medscint is the leader in plastic scintillation dosimetry solutions

* Marketed for research purposes only