Objective Endoscopic Analysis with Linked Color Imaging regarding Gastric Mucosal Atrophy: A Pilot Study

Area of Science:

• Gastroenterology
• Endoscopic Imaging
• Medical Diagnostics

Background:

• Atrophic gastritis poses diagnostic challenges in endoscopy.
• Distinguishing the border of mucosal atrophy is crucial for accurate assessment.
• Existing imaging techniques may have limitations in visualizing subtle mucosal changes.

Purpose of the Study:

• To evaluate the efficacy of Linked Color Imaging (LCI) in distinguishing the border of endoscopic mucosal atrophy.
• To compare the performance of LCI against White Light Imaging (WLI) for visualizing atrophic gastritis.

Main Methods:

• Thirty patients with atrophic gastritis underwent endoscopy with simultaneous LCI and WLI.
• Color values of atrophic and non-atrophic mucosa were quantified using the CIE 1976 (L*, a*, b*) color space.
• Color differences at the atrophic border were compared between LCI and WLI, analyzing results based on Helicobacter pylori infection status.

Main Results:

• LCI demonstrated a significantly higher color difference at the atrophic border compared to WLI (LCI: 14.79±6.68 vs. WLI: 11.06±5.44, P < 0.00001).
• LCI proved effective in both Helicobacter pylori-infected (P = 0.00003) and eradicated (P = 0.00002) patient groups.
• The enhanced visualization of mucosal color differences was consistent across different patient subgroups.

Conclusions:

• Linked Color Imaging (LCI) provides clear endoscopic visualization of the atrophic border in gastritis.
• LCI's effectiveness is independent of Helicobacter pylori infection status.
• LCI represents an advancement in endoscopic imaging for diagnosing and assessing atrophic gastritis.