chang 4d

The 4D-MRI was simulated based on the 4D-XCAT in the following steps: (1) mimic the image acquisition by continuously extracting images of the same axial slice from the 4D-XCAT phantom for more than one breathing cycle; (2) repeat step 1 for all axial slices; (3) calculate the BA for each extracted axial slice and determine the breathing curve . pakdhe 4d