Christophe Chefdhotel,Mathews Jacob,Sajan Goud Lingala,Mariappan S. Nadar,Li Zhang
申请号：
US13273410
公开号：
US08553964B2
申请日:
2011.10.14
申请国别(地区):
US
年份:
2013
代理人:
摘要：
Methods and a system to unify reconstruction and motion estimation steps in first pass cardiac perfusion MRI include a global objective function that meets data consistency, spatial smoothness, motion and contrast dynamics constraints. The global objective decomposed into simpler sub-problems which include low pass filtering of a deformed object, TV shrinkage, analytical Fourier replacement and an l2 minimizing problem. A registration tool based on the local cross-correlation similarity measure and enabled to perform both rigid and flexile deformations, is applied. Registration parameters are tuned by rigid, semi rigid and flexible models at different stages of iterations. A system to perform the methods is also disclosed.
