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Published in: Acta Neuropathologica Communications 1/2024

Open Access 01-12-2024 | Meningioma | Research

Enhancing mitosis quantification and detection in meningiomas with computational digital pathology

Authors: Hongyan Gu, Chunxu Yang, Issa Al-kharouf, Shino Magaki, Nelli Lakis, Christopher Kazu Williams, Sallam Mohammad Alrosan, Ellie Kate Onstott, Wenzhong Yan, Negar Khanlou, Inma Cobos, Xinhai Robert Zhang, Neda Zarrin-Khameh, Harry V. Vinters, Xiang Anthony Chen, Mohammad Haeri

Published in: Acta Neuropathologica Communications | Issue 1/2024

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Abstract

Mitosis is a critical criterion for meningioma grading. However, pathologists’ assessment of mitoses is subject to significant inter-observer variation due to challenges in locating mitosis hotspots and accurately detecting mitotic figures. To address this issue, we leverage digital pathology and propose a computational strategy to enhance pathologists’ mitosis assessment. The strategy has two components: (1) A depth-first search algorithm that quantifies the mathematically maximum mitotic count in 10 consecutive high-power fields, which can enhance the preciseness, especially in cases with borderline mitotic count. (2) Implementing a collaborative sphere to group a set of pathologists to detect mitoses under each high-power field, which can mitigate subjective random errors in mitosis detection originating from individual detection errors. By depth-first search algorithm (1) , we analyzed 19 meningioma slides and discovered that the proposed algorithm upgraded two borderline cases verified at consensus conferences. This improvement is attributed to the algorithm’s ability to quantify the mitotic count more comprehensively compared to other conventional methods of counting mitoses. In implementing a collaborative sphere (2) , we evaluated the correctness of mitosis detection from grouped pathologists and/or pathology residents, where each member of the group annotated a set of 48 high-power field images for mitotic figures independently. We report that groups with sizes of three can achieve an average precision of 0.897 and sensitivity of 0.699 in mitosis detection, which is higher than an average pathologist in this study (precision: 0.750, sensitivity: 0.667). The proposed computational strategy can be integrated with artificial intelligence workflow, which envisions the future of achieving a rapid and robust mitosis assessment by interactive assisting algorithms that can ultimately benefit patient management.
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Footnotes
1
This work defines an HPF as a square. All HPFs mentioned in this work had sizes of \(0.16mm^2\), as defined in the 2021 WHO CNS 5 Blue Book [2]. Therefore, the edge of an HPF was 0.4mm, or 1,600 pixels (\(0.25\mu m\)/pixel for 400\(\times\) scans).
 
3
The top-2 is defined by the F1 score, which is the geometry mean of precision and sensitivity.
 
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Metadata
Title
Enhancing mitosis quantification and detection in meningiomas with computational digital pathology
Authors
Hongyan Gu
Chunxu Yang
Issa Al-kharouf
Shino Magaki
Nelli Lakis
Christopher Kazu Williams
Sallam Mohammad Alrosan
Ellie Kate Onstott
Wenzhong Yan
Negar Khanlou
Inma Cobos
Xinhai Robert Zhang
Neda Zarrin-Khameh
Harry V. Vinters
Xiang Anthony Chen
Mohammad Haeri
Publication date
01-12-2024
Publisher
BioMed Central
Published in
Acta Neuropathologica Communications / Issue 1/2024
Electronic ISSN: 2051-5960
DOI
https://doi.org/10.1186/s40478-023-01707-6

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