Zebra
Scan monolayer & SOBP measurements
Zebra offers the first integrated solution for Proton Therapy to measure and analyze Bragg peaks (BP) and Spread-out Bragg peaks (SOBP) with a single click! Verify your depth dose curves in one measurement
Used for Workflow
Commissioning and Annual QA PT,
Monthly QA PT
3x faster commissioning
Ionization chamber detectors
Simultaneous read-out
of all chambers
High native resolution
with 2 mm detector spacing along the beam axis
3x Faster Commissioning of Your Particle Therapy Rooms
Unique multi-layer ion chamber device with OmniPro-Incline software and a high-sensitivity multi-channel electrometer using ASICs technology. It enables the fastest, most accurate, and reliable depth dose distribution measurements for particles.
Water equivalent material for equivalent scattering properties.
Measure ranges with an accuracy of 0.5 mm compared to measurements in water through the Bortfeld fit.

Small 2.5 cm diameter electrodes
Save up to three hours compared to a single SOBP reconstruction using a water tank (for scanned beams). Acquire monolayers and dose cubes with a single irradiation.
QA routine made simple through state-of-the-art technology
A high spatial resolution system
With a stack of 180 independent vented plane parallel ionization chambers, a native resolution of 2 mm and a circular shaped collecting electrode which presents a diameter of 2.5 cm, the measurement of both Bragg peak (BP) and Spread-Out Bragg peak (SOBP) becomes possible over the full clinical range within the sub millimeter accuracy.
A dedicated multi-channel electrometer
The Zebra is used in combination with a dedicated multi-channels electrometer. The electrometer system is based on the ASICs technology designed to measure with acquisition period down to 10 ms without losing any data. The readout of the 180 chambers of Zebra is performed simultaneously; this unique feature offers a tremendous advantage for the measurement of scanned beams.
Fast user uniformity calibration
The Zebra comes from factory with a complete uniformity calibration. The design has been made with the state-of-the-art technology as for MatriXX (Pixel Ionization Chamber Technology) and ensures highest stability. However, the application offers the possibility of fast recalibration in uniformity on the customer site using methods based either on Proton or Photon radiations.
Comprehensive analysis workspace
The analysis module of OmniPro-Incline provides all the necessary tools to properly and rapidly measure the fundamental Dosimetry parameters like the range or the modulation of depth dose profiles, Bragg peaks (BP), or Spread-out Bragg peaks (SOBP). Measurements can easily be set up or generated automatically with the intuitive graphical environment. The measured data are visualized in a clear, informative way to allow fast and precise analysis.
A water equivalent device
Thanks to the experience acquired with the PIC (Pixel Chamber) technology, the Zebra detector is designed with the appropriated materials in order to assemble a water equivalent device. The thickness of each electrode has been chosen to be approx. 1 mm for a 2 g/cm3 density coupled with an air gap separating each electrode fixed to 1 mm. The resulting consequence of such a design is a geometrical length of the device analogous to its water equivalent one.
Everything you need to see in your Bragg peak
OmniPro-Incline is the advanced software platform for fast and accurate quality assurance in Particle Therapy. It incorporates the latest software technology with an intuitive graphical environment, allowing for easy set-up or automatic generation of measurements. The measured data is visualized in a clear, informative way for fast and precise analysis.
Start Page
- Truly workflow oriented with easy access to essential workspaces on the left side of the screen
- Easy access to common measurement and set-up parameters through common settings workspace
Common Settings
- Easy definition of the set-up parameters, e.g. Source to Skin Distance (SSD), applied field size, snout characteristics (if applicable)
- Selection of the measurement mode: movie, trigger, single shot with customable sampling time and total measurement time
Calibration
- Delivered with uniformity calibration from factory, however the user can perform recalibration on-site using either Proton or Photon beam
- Intuitive wizard guides the user through on-site recalibration
Measurement
- Possibility to select the set-up of the measurement to be performed
- The measurement container list allows re-selection of previous measurements
- Easy visualization and data manipulation with clear and intuitive icons
Analysis
- Dedicated algorithm tool allows for BP or SOBP analysis of the measured data
Reporting tool
- Reporting of selected data with their main dosimetry parameters can be printed in a few clicks as a pdf file.
What our customers say
Technical Specifications
Technical Specifications
- Application: measurement of depth dose distribution in particle therapy
- Beam type: scanned pristine and spread-out Bragg peak (SOBP)
- Chamber type: vented ionization chambers
- Chamber size: 2.5 cm diameter
- Range accuracy: ± 0.5 mm WET
- Energy range: 33 cm WET
- Spatial resolution: 2 mm detector spacing (native resolution)
- Dose rate range: 0.5 Gy/min to 15 Gy/min
- Signal to noise ratio: max. 0.2 % with 1 cGy integrated dose
- Dose linearity: max. 0.5 % from 10 cGy up to 5 Gy integral dose
- max. 1 % from 0.5 Gy/min up to 15 Gy/min dose rate
- Typical sensitivity: 14.76 nC/Gy
- Electrometer: 4 TERA ASICs (each contains 64 independent electrometers)
- Channels: 180
- Charge resolution: 0.1 pC/count
- Sampling time: min. 10 ms
- Readout: parallel and synchronous with no dead time
- Weight: approx. 10 kg
- Dimensions: 43.9 cm (L) x 19.5 cm (H) x 17.5 cm (W)
- Power supply: 100-240 V, 50/60 Hz, power cord with US or German power plug included
- Network: point to point or Ethernet connection
Technical data is subject to change without prior notice. Patented design.
Find more information here
Brochures