Quadrupolar jump-and-return pulse sequence for fluid-suppressed sodium MRI of the knee joint at 7T.

This preliminary work demonstrated that the QJR pulse sequence produces contrast for knee cartilage while suppressing the fluid signal from the artery. The knee cartilage contrast and quality of fluid suppression obtained from the QJR sequence were comparable to those of the IR sequence. Magn Reson Med 80:641-647, 2018. © 2017 International Society for Magnetic Resonance in Medicine.