Safety and Usefulness of Fluorescence Imaging Using Methylene Blue as a Fluorophore in a Japanese Population with Hepatobiliary and Pancreatic Diseases: A Phase I Study.

The administration of MB and application of fluorescence imaging using MB can visualize blood vessels and pancreatic neuroendocrine neoplasms. And it also showed the safety of using MB as a fluorophore in Japanese patients without methemoglobinemia.