Dynamic microangiography of the gastrointestinal mucosa using magnifying Blue Light Imaging

With the emergence of image-enhanced endoscopy (IEE), it is no longer difficult to visualize the microvasculature in the gastrointestinal (GI) tract [1] [2]. Magnifying Blue Light Imaging (BLI; Fujifilm, Tokyo, Japan) provides enhanced images of superficial vessels in the GI tract as hemoglobin absorbs light with a narrow wavelength. A substantial number of studies using Blue Light Imaging have been conducted, but none of them have focused on its advantage in visualizing the dynamic microvascular architecture with the microcirculation of red blood cells.