Meeting Banner
Abstract #0711

Examining the Accuracy of Dual Echo B0 Map for Field Inhomogeneity Correction with the Application of gagCEST in Articular Cartilage at 3T

Wenbo Wei1, Guang Jia1, David C. Flanigan2, Christopher C. Kaeding2, Jinyuan Zhou3, Steffen Sammet1, Peter Arjan Wassenaar1, Michael V. Knopp1

1Wright Center of Innovation in Biomedical Imaging & Department of Radiology, The Ohio State University, Columbus, OH, USA; 2Department of Orthopedics, The Ohio State University, Columbus, OH, USA; 3Department of Radiology, Johns Hopkins University, Baltimore, MD, USA

With a better B0 map acquisition in gagCEST imaging, an entire CEST spectrum is not necessary and total scan time can be reduced. In this study, B0 inhomogeneity correction using the dual echo B0 map with different δTEs was performed to compare to the minimum point correction in gagCEST imaging of clinical knee patients. It shows that with proper δTE B0 maps we are able to make reliable B0 inhomogeneity corrections to CEST spectra which enables gagCEST to be more feasible for clinical use.