Abstract #0292
High-Speed, High-Resolution Whole-Head Sparse Contrast-Enhanced MR Angiography
Aurelien F Stalder 1 , Harald H Quick 2,3 , Michael O Zenge 4 , Peter Schmitt 1 , Qiu Wang 5 , Marc Schlamann 6 , Stefan Maderwald 2 , Mariappan Nadar 5 , and Michaela Schmidt 1
1
Siemens Healthcare, Erlangen, Germany,
2
Erwin
L. Hahn Institute for MR Imaging, University of
Duisburg-Essen, Germany,
3
High
Field and Hybrid MR Imaging, University Hospital Essen,
Germany,
4
Siemens
Healthcare, NY, United States,
5
Imaging
and Computer Vision, Siemens Corporate Technology, NJ,
United States,
6
Department
of Diagnostic and Interventional Radiology and
Neuroradiology, University Hospital Essen, Germany
Asymptotic incoherence and sparsity that can be obtained
with large matrix sizes have been shown to play a key
role in sparse data sampling. Based on this, a sequence
and reconstruction prototype for high-resolution CEMRA
was implemented on a standard clinical scanner. Whole
head CEMRA with isotropic 0.7 mm resolution in just 10 s
acquisition time was performed in 10 patients. The shown
excellent image quality with 30-fold undersampling
demonstrates the potential of sparse CEMRA for faster
acquisition and/or resolution enhancement and confirms
the sparse sampling theory indicating the potential of
sparse MRI for high-resolution imaging.
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