Navifocus WR is the promising intravascular ultrasound for navigating the guidewire into true lumen during the coronary intervention for chronic total occlusion.

@article{Okamura2014NavifocusWI,
  title={Navifocus WR is the promising intravascular ultrasound for navigating the guidewire into true lumen during the coronary intervention for chronic total occlusion.},
  author={Atsunori Okamura and Katsuomi Iwakura and Motoo Date and Hiroyuki Nagai and Akinori Sumiyoshi and Kenshi Fujii},
  journal={Cardiovascular intervention and therapeutics},
  year={2014},
  volume={29 2},
  pages={181-6}
}
We describe an initial clinical chronic total occlusion (CTO) case in which CTO-specific intravascular ultrasound (IVUS): Navifocus WR was useful for navigating the second guidewire into the true lumen under the IVUS observation from the subintimal space.