Enhanced Vascular Features in Porcine Gastrointestinal Endoscopy Using Multispectral Imaging

Area of Science:

• Medical Imaging
• Gastroenterology
• Biophotonics

Background:

• Endoscopic investigation is standard for gastrointestinal tract assessment but has a high miss rate.
• Advanced endoscopic imaging struggles with early cancer detection and polyp identification.
• Spectral imaging, analyzing tissue light interaction, is underexplored for early cancer detection.

Purpose of the Study:

• To develop and assess a multi-spectral light source for endoscopy.
• To evaluate the feasibility of spectral imaging for gastrointestinal tissue analysis.
• To improve early cancer detection and visualization of the GI tract.

Main Methods:

• Developed a multi-spectral light source with 10 narrow-bandwidth LEDs for endoscopy.
• Performed a feasibility study on a porcine upper GI tract model.
• Acquired and processed spectral images from five different tissue sections.

Main Results:

• Certain wavelengths enhanced visualization of vascular structures.
• 420 nm (violet light) demonstrated superior contrast enhancement.
• The line profile histogram gradient showed significant intensity changes between blood vessels and mucosa at 420 nm.

Conclusions:

• Spectral imaging shows potential for improved GI tract visualization during endoscopy.
• This technique may aid in early cancer detection and tissue analysis.
• Violet light (420 nm) is promising for enhancing contrast in spectral endoscopy.