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Abstract #2054

ROI-focused Non-Rigid Groupwise Registration approach for Motion Correction in ASL Renal Blood Flow Imaging

Anne Oyarzun1, Rebeca Echeverria-Chasco2,3, Paloma L. Martin Moreno4, Nuria Garcia-Fernandez4, Gorka Bastarrika2,3, María A. Fernández-Seara1,3, and Arantxa Villanueva1,3,5
1Electrical, Electronics and Communications Engineering Department, Universidad Pública de Navarra, Pamplona, Spain, 2Radiology, Clínica Universidad de Navarra, Pamplona, Spain, 3IdiSNA, Instituto de Investigación Sanitaria de Navarra, Pamplona, Spain, 4Nephrology, Clínica Universidad de Navarra, Pamplona, Spain, 5ISC, Instituto de Smart Cities, Pamplona, Spain


Motion correction methods are a prerequisite in multiple-image registration tasks. We implemented a non-rigid groupwise registration method and ROI-focused non-rigid groupwise registration method for renal pCASL images. We evaluated the temporal signal variation in the renal cortex after motion correction using both methods. Motion correction technique shows statistically significant improvement on the tSNR and ROI-focused method performs statistically better.

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