Whatever your needs in patient and machine QA, OCTAVIUS® 4D is flexible enough to follow suit. Anytime.

Its innovative modular design, coupled with the best detector technology on the market, makes OCTAVIUS 4D an ideal system for routine patient and machine QA of all major radiotherapy techniques – from conventional step-and-shoot to multiple-arc, non-coplanar treatment plans.

Perfectly adapted to your application and budget, yet flexible enough to meet your testing needs tomorrow.

Select the phantom and detector combination that is best for you and get started. Expand and upgrade it anytime later as your needs change or grow. With modular OCTAVIUS 4D, you gain the flexibility to stay ahead in patient safety and clinical efficiency. Today and tomorrow.

Verifying treatment plans with OCTAVIUS 4D:
Watch the step-by-step video

How do I set up OCTAVIUS 4D for measurement? How are measurements performed? Which dose comparison tools are available?

The step-by-step video guides you through the entire workflow – from installation to evaluation.

Other available languages:

  • One system for patient and machine QA
  • 3D dose verification in phantom and patient geometry
  • Rotating phantom - true 3D, true isotropic geometry
  • Modular and scalable – various detector arrays and phantom tops
  • Cutting-edge detector technology based on Gold Standard ionization chambers
  • Verification of treatments including non-coplanar beams, off-axis target volumes or very large fields
  • One system for multiple techniques, including Halcyon
  • Simplified workflow - from measurement to case-related monitoring of QA results with optional Track-it
  • Water-equivalent phantom material – no density scaling artifacts
  • Extended dose rate range for FFF beams – no separate detectors required
  • Full field coverage with 3D Merge for better error detection
  • Simple commissioning process
  • Completely independent QA
    OCTAVIUS 4D requires no data input from plan/linac for measurement and 3D dose reconstruction. A simple set of PDDs measured in water - that’s all! Unlike other commercially available systems, OCTAVIUS 4D is completely independent of environmental settings and guarantees maximum reliability in patient QA procedures.
  • Truly modular
    OCTAVIUS 4D is the only truly modular 4D QA system. It supports a variety of PTW detector arrays and phantom tops for efficient patient- and machine-specific quality assurance. This allows matching the measurement setup according to the particular clinical situation and extends the scope of OCTAVIUS 4D significantly.
  • Unique measurement principle – Fully transparent
    OCTAVIUS 4D measures dose time- and angle-dependent. It ensures perpendicular irradiation of the PTW array detector through synchronous phantom rotation with the linac gantry. Based on this measurement principle, OCTAVIUS 4D is the only 4D dose verification system which allows measuring the dose not only at the isocenter or the phantom’s surface but also inside the entire phantom volume without applying any non-transparent dose response corrections.
  • Minimum commissioning efforts
    Compared to competitor products, OCTAVIUS 4D needs no time-consuming commissioning process. A simple set of PDDs measured in water at different field sizes is the only input and can either be taken directly from already existing basement data or from freshly performed water phantom measurements.
  • Extended application range
    Besides standard VMAT or IMRT deliveries OCTAVIUS 4D covers a wide range of clinical applications including also special applications like verification of treatment plans with non-coplanar beams, verification of large fields, verification of extremely off-axis lying target volumes or verification of treatments with multiple energies etc.
  • Virtually FOV extension
    In some clinical situations the dimension of the target volume cannot completely be covered by the field of view (FOV) of the OCTAVIUS detector. Through intelligent merging of consecutive dose measurements very long radiation fields, such as typically encountered in craniospinal treatments, can be verified with OCTAVIUS 4D, up to field lengths of even 48 cm.
  • Powerful evaluation platform
    OCTAVIUS 4D’s user interface VeriSoft provides powerful 3D dose comparison and evaluation tools necessary to verify IMRT, VMAT or SRS/SBRT treatment plans. 3D Gamma analysis, DVH analysis in patient anatomy, Profile and dose distribution overlays, Dose-difference distributions, to name just a few.
  • Case-related data management
    Connected to PTW’s data management platform Track-it retrospective data analysis and trending of patient & machine specific QA data points out performance changes over time.
  • Chamber plates
    Insert plates for single ionization chamber measurements in OCTAVIUS 4D phantom (Semiflex3D, Semiflex 0.125 cm³, Farmer or PinPoint 3D).
    Rotation Unit plate microDiamond, on-axis (T40056.1.008).
  • Starcheck Detector
    The Starcheck array can be positioned in OCTAVIUS 4D for advanced LINAC QA measurements.
  • Bronze / Silver / Gold Service Contracts for OCTAVIUS 4D

Powerful Evaluation Tools

3D Gamma Volume Analysis

Gain more confidence in the accuracy of your results by performing a volumetric 3D gamma index analysis that expands the analysis range from a plane to a volume.
By calculating the gamma value for each voxel in the entire phantom volume and providing the results within less than a minute, the unique 3D volume analysis tool takes the commonly used gamma evaluation one step further. It not only improves passing rates, particularly in regions of steep dose gradients, but also significantly increases evaluation efficiency.

Evaluation in Patient Geometry

Failed points, measured isodoses, contours of the CTV, PTV and organs at risk can be overlaid onto the patient’s CT image, making it easier for you to immediately detect dose errors and identify the possible causes for failures.

DVH 4D Analysis

Optimize your treatment plan based on additional, independently acquired dose data.
Unlike other QA devices, DVH 4D calculates patient dose-volume histograms truly independently of the TPS, entirely based on OCTAVIUS 4D measurement data and the patient’s anatomy, using density values from the patient’s CT scan.

An Integrated Solution

Track, trend and monitor

Track the quality of your treatment plans to take action when needed. Define and assign classes in VeriSoft, e.g., depending on the treatment type (prostate, H&N, etc.), and export the verification results, along with the project file and graphics, to Track-it for efficient case-related monitoring of your QA data in one place. Simply click on the project file to review your evaluation in VeriSoft.

  • OCTAVIUS 4D Phantom
    Motorized modular phantom specially designed for rotational delivery techniques. Includes control unit and wireless inclinometer for dose measurements as a function of time or gantry angle.
    OCTAVIUS 4D includes either of the following tops to adapt the measurement setup according to the particular treatment scenario:
    • OCTAVIUS top Standard
    • OCTAVIUS top SRS
    • OCTAVIUS top SRS plus
  • OCTAVIUS Detectors
    Each array includes a detector interface for power supply and data transfer.
    • OCTAVIUS Detector 1500 for advanced IMRT / VMAT QA with 1405 vented ionization chambers
    • OCTAVIUS Detector 1000 SRS with 977 liquid-filled ionization chambers
    • OCTAVIUS Detector 1600 SRS for patient plan verification and quality control of SRS applications with 1521 liquid-filled ionization chambers

Each array includes detector interface for power supply and data transfer.

  • VeriSoft Patient Plan Verification Software
    Intuitive, workflow-oriented software platform for patient plan verification with PTW OCTAVIUS systems. Offers advanced tools for visual and quantitative dose comparison and evaluation, including 3D volume analysis, independent DVH analysis and connectivity to data-management platform Track-it.
  • OCTAVIUS 4D Trolley
    Robust, functionally designed trolley on wheels which stores all equipment and allows to conveniently position the OCTAVIUS 4D system onto the patient couch, making daily setup as comfortable and easy as possible.
Design: Motorized, modular phantom, consisting of rotation unit with four exchangeable tops    
Dimensions: Rotation unit: Diameter 320 mm, length 343 mm
OCTAVIUS top standard: Diameter 320 mm (272 mm x 317 mm x 137.4 mm)
OCTAVIUS top SRS: Diameter 170 mm (272 mm x 317 mm x 61 mm)
OCTAVIUS top SRS plus: Diameter 210 mm (272 mm x 317 mm x 82,4 mm)
OCTAVIUS top LINAC QA: Effective depth 50 mm (272 mm x 317 mm x 25.6 mm)
Weight: Rotation unit: 20.7 kg    
  OCTAVIUS top standard: 8.9 kg    
  OCTAVIUS top SRS: 2.3 kg    
  OCTAVIUS top SRS plus: 3,7 kg    
  OCTAVIUS top LINAC QA: 2.2 kg    
Material: Polystyrene    
Density: 1.05 g/cm³    
Angle range: ± 360°    
Rotation speed: max. 28°/s (Rotation unit)    
Positioning reproducibility: ± 1°    
Type of product: Two-dimensional array with 1521 liquid-filled ionization chambers
Application: IMRT patient plan verification (include VMAT)
Machine-specific QA
Online beam adjustment
Measuring quantities: Absorbed rate and absorbed dose
Range of use: (0.1 ... 24) Gy/min
Resolution: 0.1 mGy, 0.1 Gy/min
Dead time: Zero
Display cycle: (100 ... 800) ms
Type of detectors: Plane-parallel, liquid-filled ionization chambers
Detector layout: Center area (6.5 cm x 6.5 cm): spacing 2.5 mm
Outer area (15 cm x 15 cm): spacing 5 mm
Nominal response: 16 nC/Gy
Size of detectors: 2.5 mm x 2.5 mm x 0.5 mm (0.003 cm³)
Active detector area: 15 cm x 15 cm
Outer dimensions: 300 mm x 467 mm x 22 mm (W x D x H)
Weight: 5.9 kg
Detector type: Plane-parallel vented ionization chambers
Number of detectors: 1405
Detector size: 4.4 mm x 4.4 mm x 3 mm
(0.06 cm³)
Detector spacing: 7.1 mm center-to-center
Max. field size: 27 cm x 27 cm
Max. measurement points: 2916 (four measurements)
Reproducibility: ≤ ± 0.5%
Dead time: zero
Repetition rate: 100 ms
Measured quantities: absorbed dose to water (Gy),
absorbed dose rate to water (Gy/min)
Resolution: 0.1 mGy or 0.1 mGy/min
Measurement range: (0.5 ... 48 Gy/min)
Reference point: 7.5 mm below the surface of the array
Housing material: PS, GRP (frame)
Dimensions: 467mm x 300mm x 22mm (H x W x D)
Weight: 6 kg
Power supply: (100 ... 240) VAC; (50 ... 60) Hz
PC connection: Ethernet
Part No.: L981382
Detector type: Liquid-filled ionization chambers
Number of detectors: 977
Detector size: 2.5mm x 2.5mm x 0.5mm
(0.003 cm³)
Detector spacing: Center area (5.5 cm x 5.5 cm): 2.5 mm center-to-center
Outer area (11 cm x 11 cm): 5 mm center-to-center
Max. field size: 11 cm x 11 cm
Reproducibility: ≤ ± 0.5%
Dead time: zero
Repetition rate: 100 ms
Measured quantities: Absorbed dose to water (Gy),
Absorbed dose rate to water (Gy/min)
Resolution: Dose: 0.1 mGy, Dose rate: 0.1 mGy/min
Measurement range: 0.2 ... 36 Gy/min
Reference point: 9 mm below the surface of the array
Housing material: GRP
Dimensions: 22mm x 300mm x 420mm (H x W x D)
Weight: 5.4 kg
Power supply: (100 ... 240) VAC; (50 ... 60) Hz
PC connection: Ethernet
Part No.: L981381
Dimensions: 93.6 cm x 64 cm x 60 cm, height of lifting plate: 85.5 cm
Weight: 35.5 kg
Part No.: T40057
Operating system: Microsoft® Windows®
(Windows 7 Professional x32/x64,
Windows 8 Professional x32/x64,
Windows 10 Pro x32/x64)
Processor: multi-core processor, 2.3 GHz or better
Memory (RAM): min. 4 GB, 8 GB recommended
Hard disk: min. 500 MB of free space for application software and 1.5 GB of free space for .NET Framework 2.0, 3.5 and 4.0+
Screen resolution: 1280 x 1024 or higher
Interfaces: Network interface
Other: Windows® Internet Explorer® 8.0 or higher, Adobe® Reader® 7.0 or higher
Part No.: S070009

Related Downloads

OCTAVIUS 4D - Benefits for clinical applications ( 2 MB )
OCTAVIUS 4D Systems - Quick Overview ( 1 MB )
OCTAVIUS 4D Special applications ( 1 MB )
OCTAVIUS 4D Off-Axis-Algorithm ( 227 KB )
OCTAVIUS 4D Network_without_DHCP ( 670 KB )
OCTAVIUS 4D Network_Connection ( 610 KB )
OCTAVIUS 4D Verification of long radiation fields ( 801 KB )
MR-RT Products ( 2 MB )
Solutions for Small Field Applications ( 5 MB )
OCTAVIUS CT Scan Usage ( 5 MB )
Code of Practice
OCTAVIUS 4D CoP Eclipse ( 6 MB )
Code of Practice
OCTAVIUS 4D CoP Monaco ( 4 MB )
Code of Practice
Code of Practice
OCTAVIUS 4D CoP Pinnacle ( 14 MB )
Code of Practice
OCTAVIUS 4D CoP RayStation ( 6 MB )
OCTAVIUS 4D System ( 1 MB )
OCTAVIUS Systems ( 4 MB )
OCTAVIUS IMRT QA Systems Overview ( 168 KB )
Radiation Medicine Catalog ( 9 MB )

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