In this paper, we present a fully automatic brain tumor segmentation and classification model using a Deep Convolutional Neural Network that includes a multiscale approach. One of the differences of our proposal with respect to previous works is that input images are processed in three spatial scales along different processing pathways. This mechanism is inspired in the inherent operation of the Human Visual System. The proposed neural model can analyze MRI images containing three types of tumors: meningioma, glioma, and pituitary tumor, over sagittal, coronal, and axial views and does not need preprocessing of input images to remove skull or vertebral column parts in advance. The performance of our method on a publicly available MRI image dataset of 3064 slices from 233 patients is compared with previously classical machine learning and deep learning published methods. In the comparison, our method remarkably obtained a tumor classification accuracy of 0.973, higher than the other approaches using the same database.

本文提出了一种完全自动化的使用深度卷积神经网络的脑肿瘤分割和分类模型，包括多尺度方法。与以前的工作相比，我们的提案的一个区别是，输入图像在不同的处理路径上以三个空间尺度进行处理。这个机制受到了人类视觉系统的内在操作的启发。所提出的神经模型可以分析包含三种类型肿瘤的MRI图像：脑膜瘤、胶质瘤和垂体瘤，并且不需要预处理输入图像以提前去除颅骨或椎骨部分。我们的方法在一个包含233名患者3064张切片的公开可用的MRI图像数据集上的性能与以前的经典机器学习和深度学习方法进行了比较。在比较中，我们的方法以0.973的肿瘤分类准确度明显高于使用相同数据库的其他方法。

使用多尺度卷积神经网络的深度学习方法进行脑肿瘤分类和分割