Directed Graph Mapping

Solving heart problems one arrhythmia at a time

Learn more

We are looking for a new PhD Researcher to join our team! Find out more in the link below
Doctoral fellow position

DGM · Directed Graph Mapping

DGM is a diagnostic tool using network theory on cardiac excitation to determine the source of a given arrhythmia. After processing the input and analyzing the resulting graph, it is capable of detecting reentry - macro, localized and functional - as well as focal activity.

In developing DGM, we strive to combine functionality with simplicity. Creating a tool which can be used by electrophysiologists with too little time, as well as researchers trying to fine-tune their results.



DGM is being developed to retrospectively automatically analyze your clinical cases of atrial tachycardia (AT). One simple click to show where the AT is located (reentry or focal).

Our goal is to help EPs make better decisions on where to ablate. If you have any questions, would like to analyze a different type of clinical dataset or want to collaborate, do not hesitate to contact us.

We are always interested in obtaining data to further optimize our software


DGM is a versatile tool and can handle any type of electrode system. Have a look at our research page to find out which studies have already been realized with DGM. You can use DGM for clinical, experimental or in-silico data.

You can use the software in its current version for the analysis of your data, rendering both 2D and 3D simulations. Or we can help you with setting up the the software to analyze your own specific type of study.

mapping systems

Even though our current focus is towards research, we would still like to hear from you! As our final goal is to bring our research and software to the patient by embedding DGM into existing mapping systems, we are happy to show you our progress at any stage of the development.

Feel free to contact us with any questions.



Automatically show the reentry loops in the given arrhythmia. This reentry can be anatomical or functional

Focal sources

Automatically detect the focal sources in a given arrhythmia. These are regions with only outgoing arrows

Predefined input

Autoparsing for input files of several known mapping systems

Show ablation and PPI

Load data to add ablation or PPI points to your rendering

Create movies

Create movies of your rendering. One cycle or between two set timestamps


Files generated by DGM can easily be used to do your own post-processing, for example using Paraview

contact us

We'd like to hear from you! If you are interested in using DGM, in collaborating with us or want to provide us with valuable feedback, simply fill out the form below and we will contact you as soon as possible.