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Erschienen in:
2016 | OriginalPaper | Buchkapitel
4D Phase-Contrast Magnetic Resonance CardioAngiography (4D PC-MRCA) Creation from 4D Flow MRI
verfasst von : Mariana Bustamante, Vikas Gupta, Carl-Johan Carlhäll, Tino Ebbers
Erschienen in: Medical Image Computing and Computer-Assisted Intervention - MICCAI 2016
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Abstract
MR angiography (MRA) and phase-contrast MRA (PC-MRA) generation methods that facilitate blood flow assessment in the heart and thoracic vessels typically lead to the compression of data from all the timeframes of a cardiac cycle into one 2D or 3D image. This process, however, results in information loss from individual timeframes. We propose a new method for PC-MRA data generation from 4D flow MRI, which uses registration between the timeframes of the 4D acquisition to create a “four-dimensional PC-MR CardioAngiography (4D PC-MRCA)” that retains vascular and cardiac blood flow information over the entire cardiac cycle.
When evaluated on 10 4D flow MRI datasets, 4D PC-MRCA outperformed 3D PC-MRA, especially when cardiac or vessel motion was present. Consequently, the proposed method improves the existing PC-MRA generation techniques by effectively utilizing spatial as well as temporal blood flow information on both the heart and thoracic vasculature from 4D flow MR images.