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Published on: October 24, 2019
Lossy compression in diagnostic virtual 3-dimensional microscopy--where is the limit?
Thomas Kalinski1, Ralf Zwönitzer, Florian Grabellus
1Department of Pathology, Otto-von-Guericke-University, D-39120 Magdeburg, Germany. kalinski@med.ovgu.de
Human Pathology
|March 10, 2009
Summary
High compression ratios (up to 200:1) are acceptable for virtual 3D microscopy in diagnostic pathology. This data compression technique maintains diagnostic accuracy for virtual slides, even with Helicobacter pylori gastritis.
Area of Science:
- Digital Pathology
- Medical Imaging
- Computational Pathology
Background:
- Virtual slides and 3D microscopy generate large datasets requiring efficient data compression.
- Lossy compression methods like JPEG2000 can introduce artifacts, potentially impacting diagnostic quality above 20:1 compression ratios.
Purpose of the Study:
- To evaluate the diagnostic acceptability of higher data compression ratios in virtual 3D microscopy for gastric biopsy specimens.
- To determine if compression ratios exceeding 20:1 impact diagnostic accuracy in pathology.
Main Methods:
- Virtual 3D slides of gastric biopsies (with/without H. pylori gastritis) were created at compression ratios of 20:1, 40:1, 50:1, 75:1, and 200:1.
- Three pathologists performed a blinded diagnosis of the virtual slides using the updated Sydney classification.
Main Results:
- No significant differences in diagnostic accuracy were observed across all tested compression ratios, up to 200:1.
- Virtual 3D slides remained diagnostically reliable even at high levels of data compression.
Conclusions:
- Data compression ratios significantly higher than commonly used are suitable for virtual microscopy applications.
- High compression ratios can be safely employed in diagnostic pathology without compromising diagnostic integrity.
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