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2007
IEEE

Real-Time Block Flow Tracking of Atrial Septal Defect Motion in 4d Cardiac Ultrasound

9 years 3 months ago
Real-Time Block Flow Tracking of Atrial Septal Defect Motion in 4d Cardiac Ultrasound
Real-time cardiac ultrasound allows monitoring the heart motion during intracardiac beating heart procedures. Our application assists atrial septal defect (ASD) closure techniques using real-time 3D ultrasound guidance. One major image processing challenge is the processing of information at high frame rate. We present an optimized block flow technique, which combines the probability-based velocity computation for an entire block with template matching. We propose adapted similarity constraints both from frame to frame, to conserve energy, and globally, to minimize errors. We show tracking results on eight in-vivo 4D datasets acquired from porcine beating-heart procedures. Computing velocity at the block level with an optimized scheme, our technique tracks ASD motion at 41 frames/s. We analyze the errors of motion estimation and retrieve the cardiac cycle in ungated images.
Marius George Linguraru, Alexandre Kabla, Nikolay
Added 03 Jun 2010
Updated 03 Jun 2010
Type Conference
Year 2007
Where ISBI
Authors Marius George Linguraru, Alexandre Kabla, Nikolay V. Vasilyev, Pedro J. del Nido, Robert D. Howe
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