Deep Learning in Multimodal Medical Image Analysis

Various imaging modalities (CT, MRI, PET, etc.) encompass abundant information which is different and complementary to each other. It is reasonable to combine images from multiple modalities to make a more accurate assessment. Multimodal medical imaging has shown notable achievements in improving clinical accuracy. Deep learning has achieved great success in image recognition, and also shown huge potential for multimodal medical imaging analysis. This paper gives a review of deep learning in multimodal medical imaging analysis, aiming to provide a starting point for people interested in this field, and highlight gaps and challenges of this topic. Based on the introduction of basic ideas of deep learning and medical imaging, the state-of-the-art multimodal medical image analysis is given, with emphasis on the fusion technique and feature extraction deep models. Multimodal medical image applications, especially cross-modality related, are also summarized.