Characteristics and highlights

Blue Physics Plastic Scintillating Detectors (PSDs) are a new type of dosimetry detector that is revolutionizing radiation dosimetry. PSDs are made of a special type of plastic that scintillates, or emits light, when it is exposed to radiation. The amount of light emitted is proportional to the amount of radiation that the detector has absorbed.

PSDs have a number of advantages over traditional dosimetry detectors, such as ion chambers and diodes. PSDs have a very fast response time, on the order of nanoseconds. This makes them ideal for high-dose-rate and ultra-high-dose-rate therapies, such as FLASH. PSDs are also water-equivalent, meaning that they have the same stopping power as water for radiation. This is important for dosimetry because it ensures that the detectors are measuring the dose that is actually being delivered to the patient.

In addition, PSDs are compatible with the magnetic field, which makes them ideal for use in MR-Linacs. PSDs are also relatively inexpensive and easy to use.

The technology behind Blue Physics PSDs is based on the principle of scintillation. Scintillation is a process in which a material absorbs energy from radiation and then re-emits that energy in the form of light. The type of material that is used for scintillation can vary, but plastic scintillators are particularly attractive for dosimetry applications because they are water-equivalent and have a fast response time.

Blue Physics PSDs are made of a special type of plastic that is doped with a small amount of a fluorescent dye.
The fluorescent dye is responsible for converting the energy absorbed from radiation into light. The light emitted by the fluorescent dye is then collected and detected by a photomultiplier tube (PMT).

The PMT converts the light signals from the fluorescent dye into electrical signals. These electrical signals are then amplified and digitized by an electronic readout system. The digitized data is then processed by a computer to calculate the dose of radiation that was absorbed by the detector.

Blue Physics PSDs offer a number of advantages over traditional dosimetry detectors for a variety of applications, including:

High-dose-rate and ultra-high-dose-rate therapies: PSDs are ideal for high-dose-rate and ultra-high-dose-rate therapies because of their fast response time.

‍MR-Linacs: PSDs are compatible with the magnetic field, which makes them ideal for use in MR-Linacs.

‍Patient QA: PSDs can be used to measure the dose distribution delivered to the patient during treatment, and to compare this to the planned dose distribution.

‍Machine QA: PSDs can be used to verify the performance of the linac before it is used to treat patients.

Overall, Blue Physics PSDs are a promising technology for the future of radiation dosimetry. They offer a number of advantages over traditional dosimetry detectors, including fast response time, water equivalence, MR compatibility, and affordability.

Small Fields

Miniature plastic scintillating sensors, water equivalent. Ideal for small field dosimetry.

Plastic Scintillating Sensor
• Cylinder 1 mm diameter and 1 mm long
• Sensitivity volume 0.78 mm3
• Water equivalent
• Scalable to multiple sensors

All components equivalent to human body tissue)
All materials in the radiation bunker/vault /room are equivalent to water
All electronic parts or metals located outside the bunker/vault.

All electronics and metal parts are outside the bunker.

This allows us to measure radiation at the same time MR-Images are in progress during a new cancer treatment in a new MR-LINAC.

Plastic Fiber Optics to Transport Light Signal• 0.25 mm diameter• Up to 20 m long• Bundle 64 fibers in 3mm cable

Ultra Fast Scanning

We can measure the dose delivered by every single pulse from the LINAC. With our technology we can connect our Systems to a standard water tank and run all the measurements for a full commissioning of a LINAC in 1 day rather than weeks.


Several cartridges with different sensors arrangements for different applications can easily be connected and dis-connected to a single acquisition unit. The sensors/phantoms are connected to our electrometer through our removable cartridges which allows you to easily connect and disconnect multiple bundles of sensors to accommodate QA applications.

Furthermore, our technology is designed to easily escalate to have available different multiple sensors 3D arrangements.

See for yourself the difference of Blue Physics

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