iLQ

Radiotherapy LQ calculator

Free · Designed for iPad

Version 3.0: completely redesigned, instant results, available in 15 languages and optimized for iPhone Duo. iLQ is a radiotherapy dose-equivalence calculator based on the linear-quadratic (LQ) model, designed by radiation oncologists. DESIGNED FOR iPhone Duo Unfolded, iLQ uses both sides of the fold: inputs on one side, the result on the other, always in view. In Information, the list stays on one side and the text opens on the other. TWO CALCULATORS • Equivalent dose: converts a total dose delivered with one dose per fraction into the equivalent total dose for a new dose per fraction. • EQD2: equivalent dose in 2 Gy fractions. FEATURES • 17 organs at risk with their α/β ratio and dose constraint, or any α/β ratio from 0.5 to 20 Gy • Results update as you type • Warnings when the dose per fraction is outside the model's range (1–6 Gy) or when the organ's dose constraint is exceeded • Formulas, LQ model background and conditions of use included • Also runs on Mac with Apple silicon • Works offline, no account, no data collected iLQ is intended for research purposes only. It must not be used to adapt or modify patient treatment.

Ratings & Reviews

  • 3.5
    out of 5
    2 Ratings

More than 10 years after its last update and over 25,000 downloads, iLQ is back! iLQ 3.0 is a complete rewrite: • Optimized for iPhone Duo, with inputs and result on either side of the fold • Now also available on Mac with Apple silicon • New native interface, faster and clearer • Results update as you type • Clearer warnings for model limits and organ dose constraints • Enter doses with a decimal comma or point • Linear-quadratic model formulas shown in the app • Dark mode • Available in 15 languages

Version 3.0

The developer, SFjRO, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    Jean-Emmanuel Bibault
    Size
    3.5 MB
    Category
    Medical
    Compatibility
    Requires iOS 18.0 or later.
    • iPhone
      Requires iOS 18.0 or later.
    • iPad
      Requires iPadOS 18.0 or later.
    • Mac
      Requires macOS 15.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 2.0 or later.
    Languages
    English and 13 more
    • English, Arabic, French, German, Italian, Japanese, Korean, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Traditional Chinese, Turkish
    Age Rating
    16+
    Copyright
    © Jean-Emmanuel Bibault
  • Developer Website
  • Privacy Policy

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