Time-SLIP bSSFP cine images during breath holding. The Time-SLIP pulse was applied perpendicular to the sagittal plane to encompass the red dotted rectangle. In the prepontine region, only a small amount of cephalad and caudad CSF movements were observed in the mid sagittal view. The color scale was used as an arbitrary signal intensity to highlight CSF movement. With breath holding, the small to and fro CSF movement is produced by cardiac pulsations.