Convolutional LSTMを用いた乳房画像の視線動向の予測

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  • Prediction of Eye Movement on Mammography with Convolutional LSTM

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<p>It is very difficult for radiologist to correctly detect small calcifications and lesions hidden in dense breast tissue on mammography. There are previous papers that detect lesions of the observer’s eye-tracking information in chest radiography etc. by CNN. Therefore, we investigated in 3ch convLSTM, Autoencoding convLSTM, and U-net convLSTM for deep learning, and aimed to predict the eye-tracking movement in mammography with high accuracy. We obtained gaze-tracking data for four mammography expert radiologists and 15 mammography technologists on 15 abnormal and 15 normal mammographies published by the MIAS. Next, a heat map was created at 4-second intervals, and 3ch convLSTM, Autoencoding convLSTM, and U-net convLSTM was used to predict the heat map image 4 seconds ahead from the temporal two heat map images. In the SSIM in U-net convLSTM, 4-8 seconds to 16-20 seconds was 0.96±0.01. In all 4-8 seconds to 16-20 seconds, the SSIM in U-net convLSTM was higher than this in 3ch convLSTM, Autoencoder convLSTM and there was a statistically significant difference (P<0.05). In the future, it will be necessary to increase the number of cases and further improve the prediction.</p>

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