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Abstract #2479

Automatic Quantitative Identification of Disproportionately Enlarged Subarachnoid-Space Hydrocephalus in iNPH Using Deep Learning Models

SHIGEKI YAMADA1,2, Hirotaka Ito3, Hironori Matsumasa3, Satoshi Ii4, Tomohiro Otani5, Motoki Tanikawa1, Chifumi Iseki6,7, Yoshiyuki Watanabe8, Shigeo Wada5, Marie Oshima2, and Mitsuhito Mase1
1Neurosurgery, Nagoya City University Graduate School of Medical Science, Nagoya, Japan, 2Interfaculty Initiative in Information Studies/Institute of Industrial Science, The University of Tokyo, Tokyo, Japan, 3Medical System Research & Development Center, FUJIFILM Corporation, Tokyo, Japan, 4Faculty of System Design, Tokyo Metropolitan University, Tokyo, Japan, 5Mechanical Science and Bioengineering, Graduate School of Engineering Science, Osaka University, Osaka, Japan, 6Behavioral Neurology and Cognitive Neuroscience, Tohoku University Graduate School of Medicine, Sendai, Japan, 7Neurology and Clinical Neuroscience, Yamagata University School of Medicine, Yamagata, Japan, 8Radiology, Shiga University of Medical Science, Otsu, Japan

Synopsis

Keywords: Diagnosis/Prediction, Machine Learning/Artificial Intelligence, 3D MRI

Motivation: Automated detection for disproportionately enlarged subarachnoid-space hydrocephalus (DESH) using 3D MRIs.

Goal(s): We developed robust deep learning models for accurate DESH detection by automatically segmenting regions.

Approach: Utilized 3D U-Net for segmentation and multimodal convolutional neural network for classification. Achieved high accuracy, with mean Dice scores ranging 0.60 – 0.84 and softmax probability scores exceeding 0.95. All of the area under the curves exceeded 0.97.

Results: Successfully developed the highly accurate deep learning models in automatically segmentation of ventricles and regional subarachnoid spaces and in the detecting DESH, ventricular dilatation, tightened sulci in the high convexities, and Sylvian fissure dilatation.

Impact: Combining a 3D U-Net model and a multi-modal convolutional neural network model, disproportionately enlarged subarachnoid-space hydrocephalus (DESH) for idiopathic normal pressure hydrocephalus (iNPH) was automatically detected with automatically segmented regions from 3D T1- and T2-weighted MRIs.

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Keywords