  Dynamic MRI is a technique of acquiring a series of images continuously to
follow the physiological changes over time. However, such fast imaging results
in low resolution images. In this work, abdominal deformation model computed
from dynamic low resolution images have been applied to high resolution image,
acquired previously, to generate dynamic high resolution MRI. Dynamic low
resolution images were simulated into different breathing phases (inhale and
exhale). Then, the image registration between breathing time points was
performed using the B-spline SyN deformable model and using cross-correlation
as a similarity metric. The deformation model between different breathing
phases were estimated from highly undersampled data. This deformation model was
then applied to the high resolution images to obtain high resolution images of
different breathing phases. The results indicated that the deformation model
could be computed from relatively very low resolution images.

Image and Video Processing;Computer Vision and Pattern Recognition