Carsten Oliver Schirra1, Philip G. Batchelor1, Reza Razavi1, Sebastian Kozerke1,2, Tobias Schaeffter1
1Division of Imaging Sciences, Kings College London, London, Greater London, United Kingdom; 2Institute for Biomedical Engineering, University and ETH Zurich, Zurich, Switzerland
Conventional MR imaging methods result in prohibitively long measurement times hampering 3D catheter imaging in real-time. Despite progress in applying spare signal sampling theorems to catheter imaging, undersampling factors remain limited. In the present work a model-based reconstruction technique is proposed which determines the parameters describing the catheter shape directly in undersampled k-space data exploiting the limited degrees of freedom necessary. A parameterized model of a catheter is fitted by minimizing the l2-norm. It is demonstrated that the catheter shape can be reconstructed from highly undersampled data indicating the potential of the method for 3D real-time imaging of catheter devices.