Stephan Orzada1,2, Stefan Maderwald1,2, Sophia L. Gricke2, Nina Parohl2, Susanne C. Ladd1,2, Mark E. Ladd1,2, Harald H. Quick1,3
1Erwin L. Hahn Institute for Magnetic Resonance Imaging, Essen, NRW, Germany; 2Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Essen, NRW, Germany; 3Institute of Medical Physics, Friedrich-Alexander-University Erlangen-Nurnberg, Erlangen, Germany
MRI of rodents is an ever growing application when translatory imaging research from mouse to man is envisioned. In this study, two different multi-channel transmit/receive radiofrequency coil arrays have been designed for high-resolution rodent imaging on a 7T whole-body human MRI system. Both arrays have been evaluated in comparative phantom experiments and in vivo high-resolution MRI in rats. Both coil setups provided high signal-to-noise-ratio in rodents. While the 8-channel loop radiofrequency array with its larger inner diameter provided better overall signal homogeneity, the 8-channel novel stripline radiofrequency array design provided overall higher signal-to-noise-ratio and better parallel imaging acceleration performance.