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Free keywords:
myocardium, segmentation, cardiac function, real-time cardiac MRI
Abstract:
The recent development of a real-time magnetic resonance
imaging (MRI) technique with 20 to 30 ms temporal resolution
allows for imaging multiple consecutive heart cycles,
without the need for breath holding or ECG synchronization.
Manual analysis of the resulting image series is no longer feasible
because of their length.We propose a region-based algorithm
for automatically segmenting the myocardium in consecutive
heart cycles based on local context and prior knowledge.
The method was evaluated on ten real-time MRI series
and compared to segmentations by two observers, with
promising results.We show that our approach enables a multicycle
analysis of the heart function robust to breathing and
arrhythmia.
