diff --git a/README.md b/README.md
index ea9e41a..2d9d9cb 100644
--- a/README.md
+++ b/README.md
@@ -39,6 +39,7 @@ with the segmentations generated by TotalSegmentator
 - GPU-enabled machine
 - Docker
   - Required for running the MAP. Not required for running source code
+- dcm2niix ([see build instructions](#dcm2niix-install))
 
 ## Setup
 
@@ -120,6 +121,27 @@ echo $CR_PAT | docker login ghcr.io -u <github-username> --password-stdin
 docker push ghcr.io/gstt-csc/totalsegmentator-aide/map-init:0.2.0
 ```
 
+## dcm2niix install
+
+This MAP requires [dcm2niix](https://github.com/rordenlab/dcm2niix). For best performance, we build from source 
+following the [guidelines here](https://github.com/rordenlab/dcm2niix#build-from-source).
+
+Instructions in short (assuming Ubuntu):
+```shell
+# install dcm2niix dependencies
+sudo apt-get install cmake pkg-config
+
+# build and install dcm2niix
+git clone https://github.com/rordenlab/dcm2niix.git
+cd dcm2niix
+mkdir build && cd build
+cmake -DZLIB_IMPLEMENTATION=Cloudflare -DUSE_JPEGLS=ON -DUSE_OPENJPEG=ON ..
+sudo make install # creates dcm2niix inside /usr/local/bin
+
+# test install
+dcm2niix -h
+```
+
 ## GitHub Packages
 
 Note: two containers are present under GitHub Packages: