Changelog

Current version: Radiochromic.com 4.0.8

Version 4.0
  • New QA tests:
    • Coincidence light-radiation field.
    • Radiation field.
  • New Image Analysis functionalities:
    • Automatic registration
  • Changes on the front end:
    • The User Interface on Image Analysis has been redesigned.
    • The Tutorials have been updated.
Version 3.4
  • Changes on the MLC Picket Fence test:
    • The Varian™ Halcyon™ MLC is now available.
    • Before, the leaf end was defined by the FWHM between the peak of the signal and the background, which is appropriate when working with doses. Now, you can decide the threshold level that defines the leaf end and, in this way, be more accurate when pixel values do not correspond to doses (e.g., with EPIDs).
    • Leaf errors are slightly more accurate too, thanks to a better interpolation algorithm.
  • Changes on the Starshot test:
    • You can select a ROI for the test to avoid labels and other artifacts.
  • Changes on the front end:
    • The Tutorials have been revamped based on a recently published protocol.
    • You can rename studies in My Work.
    • Small changes in the design, including better responsiveness.
Version 3.3
  • MLC Picket Fence QA has been updated:
    • You can change the position of the isocenter.
    • MLC banks and leaf numbers are absolute now.
    • The automatic correction of the MLC offset is more accurate.
    • The report includes additional information.
  • The Image Analysis interface has been revamped with more intuitive QA buttons.
Version 3.2
  • MLC Picket Fence QA has been implemented.
  • The Starshot test has been improved.
  • The sum of images A and B can be calculated.
Version 3.1
  • Starshot QA has been implemented.
  • Flatness and Symmetry QA have been implemented.
  • EPID, DRRs and Dicom RT Images in general can be uploaded and analyzed.
  • Global Gamma Index analysis with prescription dose is available.
  • Average profiles can be calculated.
  • Profiles and average profiles can be exported in CSV format.
Version 3.0
  • The dosimetry model and the recommended protocol have been enhanced according to new research in radiochromic film dosimetry.
  • The dosimetry model is now the Multigaussian model.
  • The Tutorials have been updated, extended and improved.
  • PDF reports can be generated from My Item.
  • License plans have been launched and the Terms of Service have been updated.
Version 2.7
  • Relative dose distributions can be compared using the Gamma index.
  • Cursor sliders have been implemented in Image Analysis.
  • Image analysis can be launched from My Item.
  • Error messages explain why requests failed.
  • When uploading films you have the option to enter new data.
  • Several minor updates have improved usability.
Version 2.6
  • In order to boost the possibilities of the Gamma Index tool, it has been integrated in Image Analysis.
  • Uploaded images can be directly examined in Image Analysis.
  • The maximum upload file size for film scans has been increased to 20MB.
  • Empty pixels make it easier to analyze calibrations.
  • The Image Analysis tool has been improved with several new features.
  • A bug, which randomly closed the session, has been fixed.
Version 2.5
  • Image differences can now be analyzed with the Image Analysis tool.
  • Fast Gamma calculations have been introduced for the re-evaluation of Gamma Index comparisons within seconds.
  • The cloud computing architecture has been improved, and now has extended scalability.
  • Several minor bugs affecting Image tools have been fixed.
Version 2.4
  • The dosimetry model has been enhanced, in particular with a more accurate lateral correction. The model is now the CHIP 1.2.
  • The algorithm for Gamma Index calculations has been improved. It is as accurate as before for typical image resolutions, but much better for low resolutions.
  • Automatic corrections (i.e., lateral and response corrections) are opt-out by default now.
  • In the Image Analysis section, you can select, zoom, and statistically analyze ROIs.
Version 2.3
  • A new and much faster algorithm for calibrations and dosimetries has been implemented.
  • The Gamma Index calculation is also faster now.
  • Image Analysis includes a new histogram feature with range selection and statistical analysis.
Version 2.2
  • A new feature for Image Processing and Analysis has been released.
  • The recommended scanning protocol has been updated. To avoid film curling, a transparent compression (glass) sheet should be used on top of the film.
  • Instructions for exporting MultiPlan dose planes have been included.
  • Automatic fine registration limits are proportional to the dimensions of the dose distribution.
  • The labels of film and reference dose plane in My Work / Calibration were mixed up. This has been fixed.
  • Minor front-end improvements.
Version 2.1
  • New Terms of Service have been added to the website.
Version 2.0
  • Calibration with fragments is available now.
  • A special calibration mode for Cyberknife® has been included.
  • Multiple ROIs are possible for calibrations and gamma analyses.
  • There is no restriction in the selection of dose distributions for the gamma analysis: any combination of uploaded or calculated doses is possible.
  • Automatic fine registration in the gamma analysis has been improved, especially for small fields.
  • A new 'Response correction' feature allows for the elimination of interscan variability as well as other perturbations.
  • Calibration ratings and mean dose differences in gamma analyses were on occasion misleading and have been removed.
  • Only one click is now necessary to request support on a specific item.
  • The recommended protocol has been updated:
    • There is no preference in the dimensions of the scanning area, provided that it is centered on the scanner (which is critical if lateral corrections are applied).
Version 1.7
  • Dose planes can be imported from three new formats: ADAC Pinnacle (Philips), Comma-separated values and Radiochromic.com (+v1.7).
  • New film dosimetry protocols can be applied: lateral correction is optional and optical density can also be chosen as film-scanner response.
  • You can now select between local and global gamma index normalization, and refer the tolerances either to the reference or to the evaluation dose distribution.
  • Median filters can be applied to reduce the noise in the film dose distribution.
Version 1.6
  • The Radiochromic.com cloud has moved to Amazon Web Services to meet the highest standards of speed, reliability and security.
  • We have switched to HTTPS. Connections are encrypted to further protect your privacy and information.
  • Assisted commissioning is now available to help users with the implementation of radiochromic film dosimetry.
  • The recommended protocol has been updated:
    • There is no preference in the orientation of the film for the scanning (portrait or landscape).
    • Frequent recalibrating is recommended (at least once a month).
  • Studies can be archived/restored to assist in their organization.
  • A regression that prevented uploading more than four scans has been fixed.
  • Film lots can be calibrated using every possible combination of color channels.
  • Gamma index analyses are faster, allow limiting the search distance and include the simultaneous calculation of the mean dose difference.
Version 1.5
  • Calibration ratings with one-click assistance have been added.
  • Experimental support for DICOM-RT and iPlan dose maps has been implemented.
  • Gamma index calculations are tolerant to highly dissimilar dose distributions.
  • The application warns you when calibration wedge fields are incorrectly oriented with respect to the scanner lamp.
  • The cloud computing architecture has been improved (increased speed).
Version 1.4
  • Step by step tutorials have been included.
  • You can now select film orientation with respect to the scanner lamp when uploading film scans.
  • A bug that made it difficult to choose the manual selection of ROIs has been fixed.
Version 1.3
  • The front end has been enhanced with a focus on user experience, especially on usability.
Version 1.2
  • Automatic registration has been implemented for the calibration.
  • The automatic ROI algorithm has been enhanced and selected as default.
  • A new feature for adjusting the opacity balance has been added to image registration.
Version 1.1
  • The cloud computing architecture has been improved (increased speed and stability).
  • Several modifications have been implemented to make the user interface more robust.
  • Minor design changes have been made.
  • A bug in Import OmniPro dose planes has been fixed.
Version 1.0
  • First (basic) feature complete version.