In this paper, we propose a method for detecting nodules that cause cancer from three-dimensional (3D) computer tomography (CT) images of the lung field. In the proposed method, a 3D image extracted from the lung field of a CT image is input to a model constructed by a 3D convolutional neural network. Then, when the input small area image is determined to be a nodule, a mark is labelled at the corresponding position in the CT image. In this paper, in order to verify the effectiveness of the

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... l in the proposed method, the classification accuracy is verified using a model constructed with two classes, nodules and non-nodules, and then several CT images were used to detect nodules. As a result, the accuracy rate of the model was 94.44%. However, some false-positives were confirmed by nodules detection.