One ionization chamber.
Three electrodes. Two polarizing electrode. One collector electrode.
Each electrode is made of 1.5mm thick aluminum plates.
Each aluminum plate is 26cm x 26cm in size.
Each aluminum plate covers a 40cm x 40cm field size at isocenter.

Designed for everyday use.
Monitor every fraction. Every beam. Every control point. Everything. All the time.
3 aluminum plates. Embedded in a guard ring. Fixed into the acrylic frame with 14 screws.
No radiation damages. No deterioration. No dose rate dependency. No calibration. No maintenance.

Very simple. Very robust. Very stable.

For a 12-year life cycle. Guaranteed.

550cc air vented chamber volume. More than 900 times larger than a 0.6cc Farmer Chamber.
500V chamber voltage on both polarizing electrodes.
Configurable for up to 1000 signal polls per second. Default 4 polls per second.
Automated air kerma correction for every signal poll with built-in thermometer and barometer.
Highest signal stability. Unrivaled signal reproducibility with a %STDEV of 0.06% or better.

A linearly varying electrode separation. Increasing from 2mm to 2cm in leaf motion direction.
Continuous spatial resolution for a new level of measurement accuracy.
Detects any geometric change in the radiation beam.
Provides a significantly higher sensitivity
than the discrete spatial resolution of conventional verification systems.

A patented design combining the signal stability and signal reproducibility of a large ionization chamber with the spatial resolution and spatial sensitivity of film.

Starting with a minimal signal rate of 50 counts per minute.
800 to 1.500 counts per minute for a single VMAT beam segment.
5.000 to 8.000 counts per minute for a step&shoot IMRT beam segment.
230.000 counts per minute for a 10cm x 10cm x06 beam calibrated to Dmax delivering 100 MU. 305.000 counts per minute for a 10cm x 10cm x06 beam calibrated to a reference depth of 10cm delivering 100 MU.
And about 4.000.000 counts per minute for a 40cm x 40cm x06 beam delivering 100MU.
Measure every dose from 1/10 MU per sqcm up to unlimited.

100% active detection area.
Every beam segment creates a unique and highly specific signal.
Even the smallest stereotactic beam segment at any off-axis position is measured
with an unrivaled accuracy and specificity.

Particularly suited for the verification of SRT and SBRT techniques.
The smaller the beam segment the higher the detection sensitivity.

The IQM signal varies linearly with the applied dose output.
Any change in the dose output proportionally changes the IQM signal.
A 2% change in dose output changes the IQM signal by 2%.

IQM shows a significant signal variation when changing the field size.
A change in field size from 1cm x 1cm to 2cm x 2cm changes the IQM signal by approx. 340%.
Changes in field size are detected both in x- and in y-direction.

IQM shows a high sensitivity for even the smallest changes.
A 1mm single leaf change (into or out of the beam) creates a 1% signal change. IQM detects 1mm parallel shifts of two opposed leafs.
IQM has already been used for picket fence tests.

Detects beam position changes with an unrivaled sensitivity.
A 1mm change of beam placement creates a 0.5% signal change.
IQM detects beam position changes both in x- and y-direction.

IQM disects a beam fluence into its smallest contributing factors.
Every contributing factor is verified individually.
IQM is able to detect even the smallest change in the intensity map of a treatment beam.
IQM defines a new level of accuracy.