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Radiological Imaging Technology

Machine QA MLC QA Patient QA Imaging QA

RIT Classic

RIT Classic Software

RIT's original software product for Machine QA, MLC QA, and Patient QA, developed to enable medical physicists to perform all necessary analyses.


Balance your need for efficiency and responsibility for accuracy with RIT Classic. RIT Classic is RIT’s original software product package, developed to enable Medical Physicists to perform all the necessary analyses with both efficiency and accuracy in Machine QA, MLC QA, and Patient QA. RIT Classic is one of the few products on the market that has the capability to analyze images from all sources, including EPID, 2D arrays, film (Vidar and flatbed scanners), gel, and CR.


Daily, Monthly, and Annual Machine QA for LINACs

  • Enhanced 3D Winston-Lutz (Isocenter Optimization) with Virtual Star Shot*
    Automatically process a set of EPID Winston-Lutz images for a fast and accurate measurement of isocenter position. RIT’s version of this test allows you to use 3 to 16 images, and provides error estimates for ball setup and wobble around isocenter. Increased angle flexibility allows you to mimic more clinically relevant angles to determine isocenter at specific treatment configurations.
    *US Patent 9192784, JP Patent 6009705, CA Patent 2918045, and other international patents pending.
  • Stereotactic Alignment (2D Winston-Lutz) Test
  • Stereotactic Cone Profiles
  • Field Alignment
  • Gibbs Cone Analysis
  • TomoTherapy® Beam Planarity and Jaw Twist
  • TomoTherapy® Overhead Laser Position Tool
  • Import TomoTherapy® DICOM Film Files
  • Import TomoTherapy® Calibration Files
  • IGRT Alignment
Isocenter Analysis in RIT Classic


Beam Measurements

  • Fully-Automated Star Shot Analysis
    RIT’s enhanced Star Shot beam detection routine has a fully-automated interface with robust and highly accurate artificial intelligence algorithms. Polarity, ROI, number of spokes, and spoke center are automatically extracted from the image and applied in the analysis.
  • Radiation/Light Field Coincidence
  • Asymmetric Field/Matchline
  • Electron Energy (TG-25)
  • Quick Flatness and Symmetry
  • Water Tank Beam Measurement Analysis
  • Depth Dose, Cross, and Orthogonal Profiles
  • Isodose Contours
  • Image Histogram
  • 3D Dose Profile

TomoTherapy® is a registered trademark of Accuray, Inc.

    MLC QA

    Elekta LINAC

    • Hancock Tests for Elekta Machines
      The Hancock Tests (2-Image Test, 4-Image Test, and With Backup Jaw Test) use the Elekta iView™ imager to automatically measure leaf position vs. isocenter position, and jaw leaf setback measurements.
    • Elekta Leaf Speed Test
      This test aligns two images to analyze the consistency of the leaf speed for both Elekta iView™ and Agility™.
    • EPID Picket Fence Test
      This routine automates the classic picket fence test.
    MLC QA RIT Classic

    Varian LINAC

    • Automated Varian RapidArc® Tests
      Images may be taken at any distance from EPID, Film, or CR Images. This includes: Tests 0.1, 0.2, 1.1, 1.2, 2, and 3. RIT’s RapidArc QA routines support the Millennium 120, HD120 MLC, and Halcyon® MLC models.
    • Varian Leaf Speed Test
      Without the use of log files, this test measures the consistency and accuracy of Varian MLC leaf speeds as they move across an imager.
    • Varian Halcyon® MLC Analysis  
      Perform a picket fence or comprehensive RapidArc® analysis of the Halcyon® MLC. 
    • EPID Picket Fence Test
      This routine automates the classic picket fence test.

    Other MLC Tests

    • Bayouth MLC Analysis
      Analyze MLCs that require leaf gaps between banks.
    • Additional MLC Tests
      These include: TG-50 Picket Fence Test, MSK Leaf Test, Varian DMLC Test Patterns, and MLC Transmission analysis.

    iView™ and Agility™ are trademarks of Elekta AB. RapidArc® and Halcyon® are registered trademarks of Varian Medical Systems, Inc.


    IMRT, IGRT & RapidArc®/VMAT Analysis

    Patient QA RIT Classic


    • Gamma Analysis
    • Distance-to-Agreement (DTA)
    • Profiles
    • Van Dyk’s Analysis
    • Subtraction
    • Composite Analysis
    • Isodose Curves
    • Addition
    • Centroid Measurement
    • IGRT Alignment
    • IMRT Fine-Tune Registration
    • Bilinear Interpolation & Non-Cropping Rotation
    • Proportion Passing Plot
    • Save Case Files from IMRT Analysis Toolbars
    • Save & Restore IMRT Layouts
    • Plan-Based Calibration*
      Make quick, relative comparisons between any dose map and your EPID, film, and CR images.
      *Patents: EP 1683546, CA 2567197, JP 4366362, JP 4838161, US 7024026, US 7233688, US 7639851, and US 7680310.


    2D Detector Array Analysis

    • Import from 2D Arrays: Ion Chamber Arrays from IBA, PTW, and MapCHECK® diode arrays are supported. IMRT analysis routines have been revised to handle sparse data. Results can be saved as a RIT Array Case file.

    Automated Image Fill for Anthropomorphic Phantom QA

    • Use this function to automatically correct and fill any holes or cutouts in the image file. Perform patient QA with an anthropomorphic phantom for both calibrated and uncalibrated images.

    Patient QA Image Registration

    • Simultaneously perform fully-automated registration control point positioning in both traditional and RunQueueA (automated batch analysis) IMRT. Template-based registration may also be performed.

    Dose Calibrations

    • Perpendicular dose calibration
    • Parallel dose calibration
    • MLC calibration technique
      (Patents: EP 1318857, CA 2418232, JP 3817176, US 6675116, US 6934653, and US 7013228)
    • iView™ calibration
    • Kodak CR (perpendicular and spatial calibrations),
    • Optical density (OD) calibration
    • Daily output factor adjustment for calibration curves.
    • Scanner Spatial Calibration
      The spatial calibration is not a dose conversion, but rather a means to determine the exact pixel size for the Vidar film scanner or flatbed scanner. This gives you the most accurate distance measurements.
    • PDD Table Editor
    • Calibration File Merge

    MapCHECK® is a registered trademark of Sun Nuclear Corp.

    Other Measurements

    Film Dosimetry for QA

    • Radiochromic and Radiochromic Film with Vidar and Flatbed Scanners
    • Flatbed Non-Uniformity Correction
    • Radiochromic Film Uniformity Correction
    • Automated 21-Point Film Processor Correction
      (Patents: EP 1252550, CA 2396952, JP 3817176, and US 6528803)
    • Sensitometry
      (Patents: EP 1252550, CA 2396952, JP 3817176, and US 6528803)
    • 2D Scanner Spatial Calibration for Vidar and Flatbed Scanners
    • Generic Image File Import
    • Vidar Advantage Pro 180° Correction
    • Vidar Scanner Interface (Vidar Scanner Control Center)

    Computed Radiography (CR)

    • 3D CR Flatness and Uniformity Correction
    • Kodak CR Perpendicular Calibration
    • Kodak CR Spatial Calibration


    • Import EPID Images for QA
    • EPID Calibration
    • Elekta iView™ Calibration
    • Scale DICOM Images from Varian EPIDs

    General Features

    • Image Compositor
    • DICOM Anonymizer
    • Pin Prick, Erase, and ROI Tools
    • PDF reports for every analysis routine
    • Cloud-based software licensing
    • Support of 3D gels and solids


    Built-In Features in RIT CLASSIC


    RITtrend logo

    As a built-in feature, RIT Classic includes RITtrend – the all-in-one statistical database tracking solution, that stores data for all your department's measurements. Set your own specifications and RITtrend automatically analyzes process control limits on equipment analyzed with RIT software. The multi-source data manager gives you even more control for reporting on your entire medical physics program. RITtrend redefines database recording into a major tool for analysis and record-keeping in your department.


    RunQueueA logo

    As a built-in feature, RIT Classic also includes RunQueueA – the automated patient QA batch analysis feature. Automate your patient QA by setting up scripts for your repetitive patient QA/IMRT workflows. Perform automated matching and sorting of reference and target images simultaneously. Easily export your results to a customizable PDF report to display your most significant data.


    For users also requiring Imaging QA/QC, try upgrading to  RIT Complete Software

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