QUASAR™ Respiratory Motion Phantom (pRESP)

Modus QA

QUASAR™ Respiratory Motion Phantom (pRESP)


Radiation Therapy technologies, such as IGRT, SGRT and respiratory gating, have led to significant advances in patient treatment. The QUASAR™ Respiratory Motion Phantom (pRESP) is a programmable breathing and tumour motion simulator for end-to-end quality assurance on motion-guided radiation therapy systems including CT, LINAC, and PET.

The QUASAR Respiratory Motion Phantom has been adopted by Medical Physicists around the world. A balance of simple design and comprehensive testing capabilities have solidified its reputation as an industry-leading tool for respiratory motion management.


  • Operate the phantom directly from a PC or laptop
  • Stream patient-specific respiratory motion waveforms
  • Interchangeable inserts for multiple testing applications
  • Works with a number of motion tracking systems
  • Includes an unlimited multiple site software license

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