diff --git a/docs/glossary.md b/docs/glossary.md
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--- a/docs/glossary.md
+++ b/docs/glossary.md
@@ -73,6 +73,18 @@ It is a commonly used data format with diverse uses in electronic data interchan
 
 - [wikipedia](https://en.wikipedia.org/wiki/JSON)
 
+
+#### MRI 
+
+***MRI*** stands for *Magnetic Resonance Imaging*.
+
+It is a medical imaging technique used in radiology to form pictures of the anatomy and the physiological processes inside the body.
+MRI scanners use strong magnetic fields, magnetic field gradients, and radio waves to generate images of the organs in the body.
+
+##### References
+
+- [wikipedia](https://en.wikipedia.org/wiki/Magnetic_resonance_imaging)
+
 #### PET
 
 **PET** stands for *Positron Emission Tomography*.
diff --git a/docs/snippets/abbreviations.md b/docs/snippets/abbreviations.md
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@@ -7,7 +7,7 @@
 *[FWHM] : Full Width at Half Maximum
 *[GLM] : Generalized Linear Model
 *[JSON] : JavaScript Object Notation
-*[MRI] : Medical Resonance Imaging
+*[MRI] : Magnetic Resonance Imaging
 *[PD] : Phase Difference
 *[PET] : Positron Emission Tomography
 *[PSF] : Point Spread Function