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Radiological Imaging Technology

Machine QA MLC QA Patient QA Imaging QA

Machine QA

Isocenter Analysis

3D Stereotactic Alignment Isocenter Analysis

The RIT Family of Products come equipped with an automated 3D Stereotactic Alignment routine to give you a fast and accurate measurement of isocenter accuracy, allowing you to optimize your SRS/SBRT delivery.  Using only a set of EPID Winston-Lutz images, the RIT system will calculate deviations between radiation and mechanical isocenter, determine ball/BB setup error (New in 6.6), and suggest couch alignment adjustments to optimize your system’s accuracy. Additionally, this routine enables individual component (gantry, collimator, couch) characterization to better understand distinct contributions to isocenter deviation, giving insight into adjustments that can be made to improve delivery performance if needed.

Eliminate your need for films and increase your accuracy using Virtual Star Shot* with ANY combination of angles, reconstructed using a set of Winston-Lutz images in it’s new, dedicated window!

Patents: US 9192784, JP 6009705, CA 2918045, and other international patents pending.


One software product for all CyberKnife® Machine QA


Fully Automated Machine QA Tests

  • End-to-End Test:
    • Fully automated for the Ball Cube 2 phantom – no film flipping or mirroring needed
    • Ball Cube phantom
    • Mini Ball Cube phantom
  • AQA test
  • IRIS Test
  • Laser Coincidence Test
  • Fully Automated MLC Test for the M6 Collimator

Features include

  • Built in RITtrend reporting and trending
  • PDF reports for every analysis routine

CyberKnife® is a registered trademark of Accuray, Inc.


Automated QA for Helical TomoTherapy®


These automated QA tests include:

  • Y-jaw divergence/beam centering
  • Y-jaw/gantry rotation plane alignment
  • Gantry angle consistency
  • Treatment field centering
  • Couch translation/gantry rotation
  • Interrupted Treatment
  • MLC alignment test
  • Laser localization
  • Built in RITtrend reporting and trending
  • PDF reports for every analysis routine

Image Quality Tests:

  • CT Number to Density
  • Uniformity
  • Resolution
  • Contrast
  • Noise
  • Geometric Accuracy (New in V6.6)
  • Geometric Distortion (New in V6.6)
  • Crop images with Pin Prick, Erase and ROI tool (New in V6.6)

TomoTherapy® is a registered trademark of Accuray, Inc.

For users requiring both Machine & Patient QA, try 


The Single Vendor Solution That Performs or Trends EVERY TG-142 Test

RIT for TG-142 enables you to use your EPID for many machine tests with confidence and ease.  In addition, imaging QA phantoms are automatically scored with easy to use tracking and trending functions.


  • IGRT Daily QA
  • CBCT imaging for OBI and XVI
  • Planar kV Imaging
  • Planar MV (EPID) Imaging
  • MLC accuracy
  • Enhanced Stereotactic (Winston-Lutz)
  • Radiation vs. Light Field
    - Regular
    - Asymmetrical
  • Beam profiles / Flatness / Symmetry
  • Starshots and more

For users requiring both Machine & Patient QA, try 

Radiation vs. Light Field

This routine measures how well radiation and light field positions coincide for conformance with TG-142 recommendations. The routine can be used with a variety of phantoms including the RIT L-Rad phantom. The routine can make use of EPID images of the radiation field and can adapt to a variety of SIDs, asymmetric and custom field sizes. Besides radiation- light field coincidence the routine measures field symmetry and flatness, penumbra width, and field edge orthogonality in vertical and horizontal directions.

Star Shot

This classic routine measures the mechanical alignment of the gantry, the collimators, and the table. It automatically finds the starshot beam centers and edges to calculate misalignment using a variety of measures. EPID images of several spokes can be easily combined to analyze star patterns with the built-in Image Compositor tool.

Beam Measurements

RIT Software makes a variety of beam-related measurements easy, and supports the widest variety of image formats including EPID, film, and CR.


Functions include:

  • Beam orthogonal profiles including FWHM, penumbras, flatness and symmetry
  • Beam depth profiles including PDD for photons and Electron energy
  • Isodose measurements
  • Asymmetric beam alignment tests
  • Various histograms and 3D dose profiles
  • Import of water tank data for comparison

RIT Products with Machine QA

All of RIT’s therapy products
in one convenient and
comprehensive package

The original RIT product
combining patient and
machine QA

All of the machine and
imaging tests for TG-142 in a
“just what you need” package

A comprehensive test suite
for helical tomotherapy

A comprehensive
test suite for robotic


Full suite of film dosimetry
routines including patient and
basic machine QA


Basic film analysis package