# CMR Calculator

> Medical app for estimating heart chamber and extracellular volumes from MRI data. (iPhone/iPad app by Eltjo Haselhoff.)

- Source: https://appshunter.io/ios/app/cmr-calculator/id1446058240 (this page in markdown: same URL + `.md`)
- Developer: [Eltjo Haselhoff](https://appshunter.io/developer/1126280156)
- Category: Medical, Education
- Price: Free
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 17+
- Requires: iOS 11.0 · 2 MB
- Languages: English
- Released: 2018-12-15
- Data updated: 2026-07-07
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/cmr-calculator/id1446058240/reviews.md

## What is CMR Calculator?

One of the most popular features of the renowned CMR Pocket Guide app by Herzog, Greenwood & Plein, the CMR Calculator, has now been made available as a dedicated, stand-alone app for iPhone and iPad. 

This app contains a set of five calculators to estimate heart chamber volumes from MRI data,  and extra-cellular volume in the myocardium from T1 measurements. Normal value databases are integrated in the calculators, and interactively indicate normal values based on age and sex. Contains integrated info pages and references.

## Key features

- Heart chamber volume estimation
- Myocardial extracellular volume calculation
- T1 measurement analysis
- Age and sex-adjusted normal values
- Integrated info pages and references


## Frequently asked questions about CMR Calculator

### What is CMR Calculator used for?

CMR Calculator is used to estimate heart chamber volumes from MRI data and myocardial extracellular volume from T1 measurements. It provides integrated normal value databases that are adjusted for age and sex.

### Is CMR Calculator free to use?

Yes, CMR Calculator is available for free download and use on iPhone and iPad devices. There are no in-app purchases or subscription fees associated with this application.

### What devices does CMR Calculator support?

CMR Calculator is designed for Apple devices, specifically supporting iPhone, iPad, and iPod touch. It requires a compatible iOS version to function.

### How often is CMR Calculator updated?

The latest version of CMR Calculator is 1.1.2, which was released on February 12, 2019. While updates have not been frequent recently, the app provides stable functionality for its core purpose.

### What is the age rating for CMR Calculator?

CMR Calculator has an age rating of 17+. This is likely due to the technical nature of the medical data it processes and its intended audience of medical professionals.

### Does CMR Calculator include references?

Yes, CMR Calculator includes integrated info pages and references to support its calculations and provide users with additional context and information.

### Can CMR Calculator estimate extracellular volume?

Yes, CMR Calculator can estimate extracellular volume in the myocardium from T1 measurements. This is one of its key functionalities for cardiac imaging analysis.

### Who developed CMR Calculator?

CMR Calculator was developed by Eltjo Haselhoff. It is a stand-alone version of a popular feature from the CMR Pocket Guide app.

## Version history (last 1 release)

### 1.1.2 — 2019-02-12

Fixes a bug fix in the ECV calculator, which overwrote the post values of T1 with the pre values.

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## More apps by Eltjo Haselhoff

- [A k-Space Odyssey](https://appshunter.io/ios/app/a-k-space-odyssey/id1180053143)
- [CMR Explorer](https://appshunter.io/ios/app/cmr-explorer/id1449044618)
- [CMR Guide CHD](https://appshunter.io/ios/app/cmr-guide-chd/id1457448420)
- [Camera Aurea](https://appshunter.io/ios/app/camera-aurea/id1485170580)
- [TEE Pocket Guide](https://appshunter.io/ios/app/tee-pocket-guide/id6446813671)

All apps by Eltjo Haselhoff: https://appshunter.io/developer/1126280156

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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 2026-07-07.*