Virtual 3D microscopy using multiplane whole slide images in diagnostic pathology.

Area of Science:

• Pathology
• Digital Pathology
• Microscopy

Background:

• Accurate diagnosis of Helicobacter pylori gastritis is crucial in pathology.
• Virtual microscopy requires advanced techniques to replicate focusing capabilities.

Purpose of the Study:

• To evaluate the diagnostic accuracy of virtual 3D microscopy for Helicobacter pylori gastritis.
• To determine the impact of multiple focus planes on virtual slide diagnostic performance.

Main Methods:

• Preparation of virtual 3D slides with 5 and 9 focus planes from 144 gastric biopsy specimens.
• Blinded diagnosis by 3 pathologists using conventional, single-plane virtual, and 3D virtual microscopy.
• Comparison of diagnostic accuracy against conventional microscopy using the updated Sydney classification.

Main Results:

• A positive correlation was observed between the number of focus planes and diagnostic accuracy.
• Virtual 3D microscopy with 9 focus planes achieved sensitivity and specificity of at least 0.95.
• Performance of 3D virtual microscopy was comparable to conventional microscopy.

Conclusions:

• Virtual 3D microscopy is suitable for the primary diagnosis of H. pylori gastritis.
• The developed virtual 3D microscopy method is equivalent to conventional microscopy for this application.