Abstract #2839

Influence of the k-t Principal Component Analysis acceleration factor on the accuracy of flow measurement in 4D PC-MRI

Gwenaël Pagé¹, Jérémie Bettoni², Anne-Virginie Salsac³, and Olivier Balédent^1,4

¹BioFlow Image, University of Picardie Jules Verne, Amiens, France, ²Maxillo-facial surgery, University Hospital of Amiens, Amiens, FL, France, Metropolitan, ³Biomechanics & Bioengineering Laboratory, Université de Technologie de Compiègne, Compiègne, France, Metropolitan, ⁴Department of image processing, University Hospital of Amiens, Amiens, France, Metropolitan

The main purpose of this phantom study is to assess the influence of k-t Principal Component Analysis reconstruction technique on the 4D PC-MRI velocity measurements through millimetrics vessels. 4D PC-MRI sequence is repeated 4 times with a k-t PCA acceleration factor set at 0, 2, 4 and 8. Flow curves are reconstructed and their mean flow and amplitude are compared. Results shows it is possible to reduce the acquisition time and still maintain a good mean flow measurement accuracy. However, the k-t PCA acceleration factor causes loss of information, resulting in a decrease of the amplitude of the flow curve.

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