The long-term interests of Dr. Janowski include minimally invasive methods of delivery of therapeutic agents, including stem cells, to the central nervous system, with a special emphasis on intra-arterial route. He pioneered utilization of molecular imaging including CEST MRI to the field of intra-arterial targeting, and currently is pursuing frontiers of other imaging modalities to further improve the precision and predictability of intra-arterial neurointerventions.