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Qasc oncouch

Machine QA

QA StereoChecker Filmless CyberKnife® QA System

Designed to be used by both physicists and therapists, this easy method for complete daily CyberKnife QA enables improved frequency and depth of QA practices, potentially improving clinical results.

QA StereoChecker™ part of complete solution for: CyberKnife

QA StereoChecker™ Overview

Automated Iris™ QA (Accuray)

  • Complete in 5 minutes
  • Scan quality data every morning
  • Measure profiles, field width, penumbra, flatness
  • Capable of detecting a 0.1 mm field size variation

Treatment Localization System QA-TLS/TDS (Accuray Quality Assurance™)

  • Complete in 5 minutes
  • Replaces film-based AQA and is faster and easier
  • Measure absolute eccentric and center deviation
  • Capable of detecting a 0.5 mm total translational offset

Picket Fence and Garden Fence Tests

  • Complete in 5 minutes
  • Replaces daily non-quantitative daily film-based Picket Fence Tests and monthly Garden Fence Tests
  • Measures planned vs. acquired leaf patterns
  • Capable of detecting leaf variations of 0.2 mm

  • Dimensions
    38.7 cm L x 32.7 cm W x 4.9 cm H
  • Photons
    60Co to 15 MV


  • Total Pixel Number
    1024 x 1024
  • Active Pixel Number
    1000 x 1000
  • Pitch
    200 µm
  • Total area
    204.8 x 204.8 mm2


  • ADC
    16 bit, 1 MSps


  • Dynamic Range
    > 88 dB
  • Scintillator

Software Specifications

  • Operating system
    Windows® 10 Professional
  • Processor
    Intel Core (At least dual-core recommended)
  • Memory
    8 GB RAM (16 recommended)
  • Hard Drive
    2 GB Free (20 GB Recommended)
  • Screen resolution
    1024 x 768 or higher
  • Ports
    RJ45 (Ethernet)



    QA Stereo Checker Main v2web

    Sep 9th, 2021 / Reliably Efficient CyberKnife QA Solutions

    Hassle-free device setup and uncomplicated software for CyberKnife QA. Join us to learn about QA StereoChecker, CyberCross and more.
    Qasc software mlc 1400

    Aug 3rd, 2021 / Simplicity. Workflow. Results. — QA StereoChecker Reimagined.

    Fast and filmless CyberKnife QA that’s ready when you are using the reimagined QA StereoChecker.
    QA Stereo Checker Main v2web

    Jul 29th, 2021 / The Reimagined QA StereoChecker

    Hassle-free device setup and uncomplicated software for CyberKnife QA. Join us to learn about QA StereoChecker, CyberCross and more!
    QASC 040821 Website

    Apr 8th, 2021 / Efficient Daily QA Using QA StereoChecker

    Daily QA that’s completed in minutes with our filmless CyberKnife QA System — QA StereoChecker.
    Webinar 020421 Web

    Feb 4th, 2021 / QA StereoChecker: ¡Experiencia en la Fundación Arturo López Pérez!

    Relato de primera mano de Alvaro Ruiz Plata, Físico Médico del equipo de Física Médica de FALP, y su experiencia usando el QA StereoChecker en Cyberknife M6.

Tech Notes

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