Chinese Journal of Magnetic Resonance ›› 2023, Vol. 40 ›› Issue (3): 293-306.doi: 10.11938/cjmr20223045

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Fusing Attention Mechanism with Mask RCNN for Recognition of Acoustic Neuroma and Meningioma in Cerebellopontine Angle

HU Xiaoyang1,2,LIU Ying1,*(),CHEN Shu2,DONG Binbin3   

  1. 1. School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
    2. Department of Radiotherapy, Shanghai Gamma Hospital, Shanghai 200235, China
    3. Depart of Radiology, Shanghai Gamma Hospital, Shanghai 200235, China
  • Received:2022-12-15 Published:2023-09-05 Online:2023-03-21
  • Contact: *Tel: 18602168660, E-mail: ling2431@163.com.

Abstract:

To investigate the performance of Mask RCNN (region-based convolutional neural network) using T1WI-enhanced images and fusing with attention mechanism in recognizing acoustic neuroma and meningioma in cerebellopontine angle area, this paper retrospectively collected 116 cases of meningioma and 427 cases of acoustic neuroma confirmed by pathology or clinical diagnosis. 872 images of meningioma and 2 467 images of acoustic neuroma were adopted after image screening. These images were divided into the training set, validation set, and test set in a ratio of approximately 7:1.5:1.5. After preprocessing the images, we employed five models, namely Mask RCNN model with Resnet50, Resnet101, VGG19 as the backbone network, and Mask RCNN models Resnet101-CBAM and VGG19-CBAM fusing with the convolution attention mechanism, for the detection and lesion segmentation of acoustic neuromas and meningioma in cerebellopontine angle area. The model performance was evaluated with mean average precision (mAP) and mean average recall (mAR). The results in the test set showed that the convolution attention mechanism could improve model performance. VGG19-CBAM model outperformed other models with mAP of 0.932 in classification and 0.930 in segmentation. This indicates that Mask RCNN fusing with attention mechanism has a better performance in recognizing acoustic neuroma and meningioma in cerebellopontine angle area, and hence can improve clinical efficiency by providing a reference for the diagnosis and target area segmentation.

Key words: Mask RCNN, CBAM, acoustic neuroma, meningioma, magnetic resonance image

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