Red Dichromatic Imaging
RDI™ Technology – The Power to See Deeper
One of several new technologies available with the EVIS X1™ endoscopy system, Red Dichromatic Imaging (RDI™) technology is designed to improve the visibility of bleeding points within the mucosa and to enhance the visibility of deep blood vessels compared to white light.1
Gastrointestinal bleeding is a serious challenge, involving considerable mortality of 2-10% and high management costs,2 and prevention of complications is critical. RDI technology supports identification of these bleeding points, as well as quick and easy hemostasis.1 It is also designed to identify deep blood vessels, which is helpful to an endoscopist working in the submucosal space during an endoscopic submucosal dissection (ESD) or an endoscopic mucosal dissection (EMR); they can establish clear visualization of these deep vessels prior to making an incision.1 Therefore, RDI technology may help to reduce stress and procedure time for emergency bleeding and endoscopic resection.1
How It Works
RDI technology works by applying the same principle of NBI™ (Narrow Band Imaging™) technology. However, rather than selecting short wavelengths of light (Blue and Green) to view surface patterns and blood vessels, RDI technology uses Green, Amber and Red. These longer wavelengths of light penetrate more deeply into human mucosal tissue and support visualization of bleeding points and deep blood vessels.1
The following video shows Prof. Dr. Jürgen Pohl using an EVIS X1 GIF-1100 gastroscope during an upper GI procedure with RDI technology.