# eLQ

> Radiation therapy dose calculation tool using the linear-quadratic model. (iPhone/iPad app by SFjRO.)

- Source: https://appshunter.io/ios/app/elq/id398906906 (this page in markdown: same URL + `.md`)
- Developer: [SFjRO](https://appshunter.io/developer/384465115)
- Category: Medical, Utilities
- Price: Free
- Rating: 4.00/5 from 1 App Store ratings
- Age rating: 17+
- Requires: iOS 6.0 · 12 MB
- Languages: American English
- Released: 2010-10-26
- Data updated: 2026-06-26
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/elq/id398906906/reviews.md

## What is eLQ?

eLQ calculates biological equivalent dose for radiation therapy treatment using the linear-quadratic model. Users can choose betweens organs (spine, heart, lung, liver, skin, ...) or several α/β ratios.

## Key features

- Linear-quadratic model calculations
- Selectable organs (spine, heart, lung, liver, skin)
- Adjustable α/β ratios
- Biological equivalent dose computation


## Frequently asked questions about eLQ

### What is eLQ used for?

eLQ is used to calculate the biological equivalent dose for radiation therapy treatments. It employs the linear-quadratic model for these calculations, assisting medical professionals in treatment planning.

### What organs can be selected in eLQ?

eLQ allows users to select from a variety of organs for dose calculation, including the spine, heart, lung, liver, and skin. This feature enables tailored calculations based on the treatment area.

### Does eLQ support different α/β ratios?

Yes, eLQ supports calculations with several different α/β ratios. This flexibility is crucial for accurately modeling the biological response of various tissues to radiation.

### What is the age rating for eLQ?

eLQ has an age rating of 17+. This is likely due to the complex medical nature of the application and its target audience.

### On which devices can eLQ be used?

eLQ is available for iPhone, iPad, and iPod devices. It is designed to be accessible on Apple's mobile and tablet platforms.

### How often is eLQ updated?

The latest version of eLQ, 2.0.6, was released on April 1, 2016. Users can check for updates to ensure they have the most current version of the software.

### What is the user rating for eLQ?

eLQ has a user rating of 4.0 stars, based on one rating. This indicates a generally positive reception from its users.

### Does eLQ have ads?

No, eLQ does not contain advertisements. As a free application, it provides an ad-free experience for its users.

## Version history (last 4 releases)

### 2.0.6 — 2016-04-01

This app has been updated by Apple to display the Apple Watch app icon.

Bug correction

### 2.0.3 — 2015-11-03

Coded on my way to ASTRO 2015 ;-)

- Compatible with iOS 9.1
- New interface
- Corrected a bug that prevented the user from selecting an organ
- Added 3D Touch for iPhone 6s & 6s Plus

I hope you'll like this new version!

Jean-Emmanuel Bibault

### 1.5 — 2011-12-14

Added an EQD2 calculator.
Fixed various bugs.
Universal app for the iPhone and the iPad

### 1.00 — 2010-10-26

No release notes.

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## More apps by SFjRO

- [iLQ](https://appshunter.io/ios/app/ilq/id384465112)

All apps by SFjRO: https://appshunter.io/developer/384465115

## Related topics

[sfjro](https://appshunter.io/ios/topics/sfjro)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-26.*