2007 IEEE International Conference on Image Processing - San Antonio, Texas, U.S.A. - September 16-19, 2007

Technical Program

Paper Detail

Paper:TA-L5.3
Session:Biomedical Imaging II: MRI and Segmentation
Time:Tuesday, September 18, 10:30 - 10:50
Presentation: Lecture
Title: ROBUST SPATIAL PHASE UNWRAPPING FOR ON-LINE MR-TEMPERATURE MONITORING
Authors: Baudouin Denis de Senneville; Laboratory for Molecular and Functional Imaging 
 Gregory Maclair; LaBRI 
 Mario Ries; Laboratory for Molecular and Functional Imaging 
 Pascal Desbarats; LaBRI 
 Bruno Quesson; Laboratory for Molecular and Functional Imaging 
 Chrit Moonen; Laboratory for Molecular and Functional Imaging 
Abstract: Magnetic Resonance (MR) systems can be used to monitor temperature changes in and around a treated region during an hyperthermic ablation procedure. Dynamic temperature monitoring allows on-line prediction of cellular destruction during the intervention. MRI systems associate each volume unit with a complex number. Phase component is 2.pi-periodic (it is a function of the wrapped phase) and accounts for noise sources present in MR imaging. Robust spatial phase unwrapping is a necessary prerequisite for several applications. This study proposes a spatial phase unwrapping algorithm for MR images, allowing a real-time implementation for on-line temperature monitoring.



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