About

Radiochromic.com is a web application for radiochromic film dosimetry.

We apply sophisticated and compute-intensive algorithms to make radiochromic dosimetry easy, fast and accurate.

Radiochromic.com is under constant development. You can expect to find new features and improvements on a regular basis.

Release notes

Current version: Radiochromic.com 3.0

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.