PTW Archives - Abex Medical System

Soft X-Ray Chamber 34013

Abex Medical System — Sat, 18 Oct 2025 04:54:43 +0000

Soft X-Ray Chamber 34013

Thin window plane-parallel chamber for dose measurements in superficial radiation therapy

The 34013 soft X-Ray chamber is used for reference dose measurements in low-energy photon beams as used in superficial radiation therapy.

The chamber’s small size enables the user to perform measurements with excellent spatial resolution.
Correction factors needed for the determination of absorbed dose to water are available.
The chamber is designed for the use in solid state phantoms

Key Features

Ultra thin entrance window
For low-energy photons from 15 kV to 70 kV
Extremely small size
Sensitive volume 0.005 cm³, vented

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microSilicon X

Abex Medical System — Sat, 18 Oct 2025 04:54:43 +0000

microSilicon X

Shielded Silicon Detector for all Photon Fields

Due to its newly developed shielding, the microSilicon X is perfectly suited for measurements in photon fields up to large field sizes. With its excellent spatial resolution, it is possible to measure very precisely beam profiles, even in the penumbra region.

The improved energy response enables the user to perform accurate, field size independent percentage depth dose measurements. In addition the new design results in a small water equivalent window thickness, which has positive effects on the measurements of output factors.

Shielded diode detector for photon field sizes up to 40 x 40 cm²
The shielding reduces the low energy scattered radiation amount in the detector signal
Ideal for percentage depth dose and profile measurements
Excellent dose stability (@6 MV ≤ 0.1 %/kGy)
Shielded diode detector for photon field sizes up to (40 x 40) cm²
The shielding reduces the low energy scattered radiation amount in the detector signal
Ideal for percentage depth dose measurements, field size independent
Excellent dose stability (≤ 0.1 %/kGy at 6 MV)
Low dose per pulse dependence

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Semiflex Ionization Chamber 31010

Abex Medical System — Sat, 18 Oct 2025 04:54:43 +0000

Semiflex Ionization Chamber 31010

Standard therapy chamber for scanning systems and for reference dosimetry

The 31010 semiflexible chamber is the ideal compromise between small size for reasonable spatial resolution and large sensitive volume for precise dose measurements.
This makes the 31010 chamber to one of the most commonly used chambers in scanning water phantom systems.

The chamber volume of 0.125 cm³ gives enough signal to use the chamber also for high precision reference dose measurements.

The sensitive volume is approximately spherical resulting in a flat angular response and a uniform spatial resolution along all three axes of a water phantom.

Key Features

Waterproof, semiflexible design for easy mounting in scanning water phantoms
Minimized directional response
Sensitive volume of 0.125 cm³, vented
Point dose patient QA with RUBY

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OCTAVIUS Detector 1500

Abex Medical System — Sat, 18 Oct 2025 04:54:43 +0000

OCTAVIUS Detector 1500

Gold Standard ionization chamber technology

Compared to diode detectors or solid state detectors, ionization chambers guarantee the following benefits:
A long lifetime of the detector
No recalibration necessary due to its stable and reliable signal even with accumulated dose
Water-equivalent measurements
Measurements with a well-established system
An excellent field coverage due to its finite ionization chamber size

Key Features

Detector Array with 1405 ionization chambers
Gold standard ionization chamber technology avoids detector ageing effects
Patient plan verification and machine-specific QA in one system
Suitable for use with OCTAVIUS 4D system – the modular phantom for IMRT, VMAT and SRS/SBRT
Suitable for a wide energy range including FFF beams
Detector spacing: 7.1mm center-to-center
Large field size: 27×27 cm²
Reproducible, quick and easy positioning with the Couchfix Positioning Tool

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Semiflex Chamber 0.3 cm3 Type 31013

Abex Medical System — Sat, 18 Oct 2025 04:54:43 +0000

Semiflex Chamber 0.3 cm3 Type 31013

Therapy chamber for scanning systems and for reference dosimetry

The 31013 semiflexible chamber is ideal for precise dose measurements and for the measurement of dose distributions in scanning water phantom systems. The chamber is used as an alternative for the 31010 chamber in cases where increased signal levels are required and spatial resolution along the axis of the chamber can be compromised.

Key Features

Waterproof, semiflexible design for easy mounting in scanning water phantoms
Increased sensitive volume for low level measurements
Sensitive volume of 0.3 cm³, vented

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OCTAVIUS Detector 1500XDR

Abex Medical System — Sat, 18 Oct 2025 04:54:43 +0000

OCTAVIUS Detector 1500XDR

Patient Plan Verification and Quality Assurance for Proton and Heavy Ion Beams

The OCTAVIUS Detector 1500XDR is a new concept of an ion chamber matrix for patient plan verification and quality control radiation therapy with protons or heavy ions. Utilizing ion chambers avoids radiation defects, the major drawback of solid-state detectors. The vented plane-parallel ion chambers are 4.4 mm x 4.4 mm x 3 mm in size and the center-to-center spacing is 7.1 mm. In total there are located 1405 ion chambers in a chessboard matrix, providing a maximum field size of 27 x 27 cm². The square chamber design offers unique 50% field coverage. Read out cycles of 100 ms provide the basis for real-time analysis of beam profiles.

Key Features

Suitable for patient plan verification and machine QA of proton and heavy ion beams
Outstanding detector and matrix design: 1405 vented cubic ion chambers, uniformly arranged on a 27 x 27 cm² matrix
Detector spacing 7.1 mm center-to-center (diagonals)
Pioneering ionization chamber array, flat and lightweight (6 kg)
No ageing effects by utilizing gold Standard ionization chamber technology
Absolute dose calibration in ⁶⁰Co beam
Supported by the measurement and evaluation software programs VeriSoft, MultiCheck and BeamAdjust

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RW3 Slab Phantom

Abex Medical System — Sat, 18 Oct 2025 04:54:43 +0000

RW3 Slab Phantom

Water-equivalent RW3 slab phantom with chamber adaptation plates for therapy dosimetry

The RW3 phantom is water-equivalent in the energy ranges from ⁶⁰Co to 25 MV photons and from 4 MeV to 25 MeV electrons. The phantom is used for monitor calibration and quality assurance measurements. Depth dose measurements are made by varying the measuring depth. To provide for backscatter, slabs are placed below the radiation detector. The slab phantom consists of 1 plate 1 mm thick, 2 plates each 2 mm thick, 1 plate 5 mm thick and 29 plates each 10 mm thick. This combination makes it possible to vary the measuring depth inincrements of 1 mm. The size of the complete phantom is 30 cm x 30 cm x 30 cm. Adapter plates for a number of detector types are available for both phantoms.
Each plate is precisely machined for a thickness tolerance of only ± 0.1 mm.

Key Features

Makes it possible to perform monitor calibrations and depth dose measurements in a solid state phantom
Suitable for high energy photon and electron dosimetry
Makes it possible to vary the measuring depth up to 30 cm in increments of 1 mm
Made of water-equivalent RW3 material (Goettingen White Water) with thickness tolerance of ± 0.1 mm

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OCTAVIUS Detector 1600 SRS

Abex Medical System — Sat, 18 Oct 2025 04:54:43 +0000

OCTAVIUS Detector 1600 SRS

Detector array for patient plan verification and quality control of SRS applications

Key Features

Detector array with 1521 liquid-filled ionization chambers
Filmless patient plan verification and machine-specific QA
Suitable for use with OCTAVIUS 4D system – the modular phantom for IMRT, VMAT and SRS/SBRT
Verification of single-isocenter treatments of multiple metastasis
Active volume 2.5 x 2.5 x 0.5 mm³
Detector spacing in center area: 2.5 mm
Best available field coverage for SRS applications with a field size of 15 x 15 cm²
Effective tool for CyberKnife QA
Reproducible, quick and easy positioning with the Couchfix Positioning Tool

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RUBY Modular QA Phantoms

Abex Medical System — Sat, 18 Oct 2025 04:54:43 +0000

RUBY Modular QA Phantoms

RUBY offers a unique combination: a compact, easy-to-setup base phantom, the head phantom, and highly versatile test inserts. RUBY provides you with a simple, yet comprehensive solution that helps you evaluate the entire radiotherapy treatment process.

Its scalable, modular design makes it easy for you to stay flexible. A continuously expanding range of inserts helps you to meet QA requirements for evolving treatment techniques. Customize RUBY to your specific needs.

RUBY base phantom

Perform integrated tests of the entire treatment chain from imaging to planning and verification with one basic phantom.

Add and expand QA capabilities when needed.

RUBY is the new modular phantom platform for radiotherapy QA. It comes with a variety of exchangeable, application-specific inserts that satisfy all test requirements in a modern treatment facility.

RUBY head phantom

An increasing number of special stereotactic radiations are performed with couch extensions equipped with head shells.

For this type of application, the RUBY system can be combined with the RUBY head phantom. This is compatible with all inserts containing CT markers that indicate the central position of the inserts.

The RUBY head phantom has been successfully tested with the Brainlab as well as the Encompass (QFix) mask systems.

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OCTAVIUS Detector 1600XDR

Abex Medical System — Sat, 18 Oct 2025 04:54:43 +0000

OCTAVIUS Detector 1600XDR

Patient Plan Verification and Quality Assurance for Proton and Heavy Ion Beams

The OCTAVIUS Detector 1600XDR is a high resolution ion chamber matrix for patient plan verification and quality control radiation therapy with protons or heavy ions. Utilizing ion chambers avoids radiation defects, the major drawback of solid-state detectors. The vented plane-parallel ion chambers are 2.5 mm x 2.5 mm x 2 mm in size and the center-to-center spacing is 2.5 mm in the central area of 6.5 x 6.5 cm² and 5 mm in the area surrounding it. In total there are 1521 ion chambers, providing a maximum field size of 15 x 15 cm². The square chamber design offers unique 100% field coverage in the central region. Read out cycles of 100 ms provide the basis for real-time analysis of beam profiles.

Key Features

Suitable for patient plan verification and machine QA of proton and heavy ion beams
Outstanding detector and matrix design: 1521 vented cubic ion chambers, arranged on a 15 x 15 cm² matrix
Detector spacing: 2.5 mm center-to-center central 6.5 x 6.5 cm² area, 5 mm center-to-center outer 15 x 15 cm² area
Pioneering ionization chamber array, flat and lightweight (6 kg)
No ageing effects by utilizing Gold Standard ionization chamber technology
Absolute dose calibration in ⁶⁰Co beam
Supported by the measurement and evaluation software programs VeriSoft and BeamAdjust

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