QUASAR™ Respiratory Motion Platform

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Add Multi-Directional Motion to Existing Stationary Phantoms


The QUASAR™ Respiratory Motion Platform is designed to move your existing phantoms with programmable respiratory and sinusoidal motion profiles for patient-specific QA.

The Platform’s unique multi-directional motion simulation capability allows it to move in the superior/inferior direction but can also generate a lateral hysteresis motion with amplitudes up to 1.0 cm. This allows testing with phase separation.

With a weight-bearing capacity of 20 kg, the QUASAR™ Respiratory Motion Platform can be used to move any QUASAR™ phantom and most third-party phantoms.

The QUASAR™ Respiratory Motion Platform includes a Chest Wall Platform - moving in the anterior/posterior direction - which is compatible with motion tracking systems from several vendors.


  • Accommodates phantoms weighing up to 20 kg
  • Communicate with phantom through local area network
  • Ideal for phase separation testing
  • Requires no additional programming or customization
  • Compatible with third-party waveforms including; .VXP, .CSV, .TXT, .DCM, .LOG, .DAF, .IMA
  • Install the software on an unlimited number of computers at all official sites

Find the full technical specification on the Modus QA website here

Patient-Specific Motion QA Software

Import Waveforms

Included Motion QA Software allows you to import patient-specific waveforms from a number of respiratory gating machines including Varian Real-time Position Management™ (RPM), Anzai, Cyberknife, Philips, Respisens, and Siemens.

Wave Editor

Conveniently edit waveforms using a wide range of functions include adjusting the amplitude, stretching or compressing the timeline and filtering out high-frequency noise, low-frequency drift and cardiac signals.

Creation Wizard

Quickly create custom or unique waveforms using the built-in waveform creation wizard or by importing a tab-delimited file created in a spreadsheet program or an ASCII text formatter.

Compatible with Windows 7 or better

Built-in editing tools to create, manipulate, and analyze respiratory waveforms

Product video demonstration

Steady-state Motion

Demonstrating the QUASAR™ Respiratory Motion Platform moving independently in a steady-state motion or under computer control using pre-recorded patient breathing waveforms.

pRESP Motion Platform Heavy Duty