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Abstract #4230

Optimized refocusing-flip-angle-train design for small peripheral nerve imaging with 3D TSE

Barbara Cervantes 1 , Jan S. Bauer 2 , Hendrik Kooijman 3 , Marcus Settles 1 , Axel Haase 4 , Ernst J. Rummeny 1 , Klaus Wrtler 1 , and Dimitrios C. Karampinos 1

1 Diagnostic and Interventional Radiology, Technische Universitt Mnchen, Munich, Germany, 2 Neuroradiology, Technische Universitt Mnchen, Munich, Germany, 3 Philips Healthcare, Hamburg, Germany, 4 Zentralinstitut fr Medizintechnik, Technische Universitt Mnchen, Garching, Germany

3D TSE imaging has been emerging for high-resolution MR neurography. 3D TSE refocusing-flip-angle-train design traditionally considers only the signal of a target tissue. Peripheral-nerve branches can have diameters down to a couple of millimeters and can therefore be affected not only by their own signal behavior but also by that of the surrounding tissue. The present work proposes flip-angle schemes that consider the interface between fine nerve structures and the enveloping tissue. The optimized flip-angle design is compared to cases considering only the signal behavior of nerve (standard approach) and is demonstrated in vivo in the lumbar plexus.

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