NEW – QUASAR™ Heavy Duty Respiratory Motion Platform

The QUASAR™ Heavy Duty Respiratory Motion Platform is a programmable breathing and patient motion simulator for the quality assurance of motion-guided radiation therapy systems using any large-scale phantoms up to 45 kg (100 lbs). The Platform HD’s multi-directional motion simulation capability enables in-line translation with both the sagittal plane in the SI direction, or at a user-defined rotated arrangement. 

Balancing simple design and comprehensive testing capabilities, the QUASAR™ Heavy Duty Respiratory Motion Platform is easily integrated into any adaptive end-to-end QA protocols and pushes your respiratory motion management systems to their limits.

Integrate your motion QA with the leaders in SGRT.

The QUASAR™ Heavy Duty Respiratory Motion Platform features a vertical chest-wall platform that is compatible with a number of Surface Guided Radiation Therapy Systems (SGRT), such as: Vision RT, C-RAD, Brainlab, and Varian Identify. Easily import patient-specific waveforms from various motion capture and waveform generating sources. Compatible with the following file formats: VXP, .CSV, .TXT, .DCM, .LOG, .DAF, .IMA

  • Specifications

    • Motion Platform: 45 cm x 35 cm
    • Weight-bearing load up to 45 kg (100 lbs)
    • Overall Dimensions: 70 cm x 35 cm x 15 cm (H)
    • Mass/Weight: 8 kg (17.6 lbs) excluding third-party phantoms
    • Chest Wall Platform: 13 cm diameter, carries up to 1 kg (2.2 lbs)
    • Power Suppy: Input: 110 – 240V~, 50-60 Hz, 1.0A | Output: 24Vdc, 2.1A
    • Approvals: CE, UL/CSA 60950-1
  • Minimum Technical Requirements

    • Operating System: Windows 7 SPI, and 10
    • Ports: 1 Ethernet
  • 100-1010-200 QUASAR™ Programmable Heavy Duty Respiratory Motion Platform

    • 1-Software License
    • 1-QUASAR™ Respiratory Motion Platform HD
    • 1-30 degrees CCW Alignment Wedge
    • 1-Chest Wall Surrogate Platform
    • 1-ArcCheck® Feet Support
    • 1-User's Guide
    • 1-Heavy-Duty Shipping Case (5 kg)
  • Related Phantoms

    • 100 - 1004 QUASAR™ Multi-Purpose Body Phantom
Download Product Data Sheet


Heavy Duty

Equipped with a large 45 cm x 35 cm platform surface and accommodating up to 45 kg (100 lbs), the QUASAR™ Heavy Duty Respiratory Motion Platform is able to integrate multi-directional motion to most of the industry’s large-scale phantoms, including the ArcCheck© or any 3rd party dosimetry arrays.


Modus QA has developed an easy-to-use phantom with comprehensive testing capabilities for demanding motion protocols in modern radiation therapy departments. From its manual operation mode to its rapid 30° offset alignment wedge, the QUASAR™ Platform HD is an intuitive motion-management QA tool designed with the end-user in mind.

Motion Control Options

Easily adjust motion waveform amplitude and frequency with either local manual control at the motor or advanced programmable control at the software interface. Apply a user-defined rotated arrangement to your existing phantoms to create complex motion profiles. With playback of motion waveforms, complexity is elevated to test the limits of your motion management systems.

Motion Precision

The QUASAR™ Platform HD exhibits detailed sensitivity when replicating captured or created waveforms. A highly responsive motor repositions the translation stage every 10 ms (100x per second) providing real-life breathing replication. Waveforms from 0-60BPM are easily replicated with sub-millimeter accuracy, allowing for the testing of a large range of clinical protocols.


The QUASAR™ Platform HD is compatible with any stationary phantom up to 45kg (100lbs). Specialized feet support allows for the rapid indexing of the phantom in either a linear or 30° rotated offset arrangement for multidirectional motion capabilities. With acceleration and velocity parameters set correctly (according to the weight of the phantom), imported waveforms can be analyzed and modified so that they playback safely.


The intuitive programmable respiratory motion QA software is included with the QUASAR™ Heavy Duty Respiratory Motion Platform. This locally-installed package enables the control of the phantom’s motion and customization of supplied and imported motion waveforms. An incorporated Deep Inspiration Breath Hold Function increases workflow efficiency for users to test DIBH protocols.

Complex Motion Control Options

The Platform HD offers full control of your phantom’s motion profile. Our Respiratory Motion QA Software offers multiple operation modes to increase utility. From adjustable sinusoidal waveforms and simple test patterns to accurate playback of complex waveforms, the platform offers the flexibility to choose your motion complexity for your required testing sequence.

Customizable Waveforms

In addition to an extensive library of pre-loaded waveforms, the Respiratory Motion QA Software enables the import of acquired waveforms from a number of respiratory gating and motion tracking systems. The waveforms are completely customizable, improving the user experience when modifying waveform patterns to achieve the desired testing protocol.

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