Update README.md

Updating description and dependencies

README.md

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-# dynamic_lung_water
-Dynamic Lung Water analysis for the publication "Dynamic lung water magnetic resonance imaging during exercise stress".
+# Dynamic lung water magnetic resonance imaging during exercise stress
+This code is for the manuscript (in sub): Seemann, F., et al. Dynamic lung water magnetic resonance imaging during exercise stress
+
+## This repository contains 
+- Matlab pipeline code for inline reconstruction and analysis
+- Python processing for lung segmentation for analysis
+- Image registration package
+
+# NHLBI TOOLBOX GADGETRON Installation
+Repository with gadgetron image reconstruction code: https://github.com/NHLBI-MR/selfgated_noncartesian_reconstruction.git
+
+% GADGETRON MATLAB
+- Install application through matlab
+- https://www.mathworks.com/matlabcentral/fileexchange/72715-gadgetron
+- Make directory "+nhlbi" inside the +gadgetron class
+
+# Requires python packages 
+- numpy
+- matplotlib
+- torch
+- torchvision
+- scipy
+
+pip install numpy matplotlib torch torchvision scipy
+the trained neural network is named best_lung_seg_model.pkl and is saved in the python folder