Subpixel Registration in Renal Perfusion MR Image Sequence

We propose a subpixel registration algorithm to deal with the motion induced by breathing for renal perfusion MR image sequences. Our approach minimizes an energy functional that integrates a motion model and temporal smoothness constraints. We then present a multistage level set method that segments different kidney structures in the registered MR image sequence. Tests with a rat kidney transplantation study show that the algorithm successfully compensates for the breathing motion and extracts the kidneys, cortex, medulla, and pelvis.

• Type: Conference
• Year: 2004
• Where: ISBI
• Authors: Chien Ho, José M. F. Moura, Ying Sun
• Keywords: ISBI 2004, Medical Imaging, Rat Kidney Transplantation, Renal Perfusion Mr, Subpixel Registration Algorithm