Abstract
The synthesis of medical images is an intensity transformation of a given modality in a way that represents an acquisition with a different modality (in the context of MRI this represents the synthesis of images originating from different MR sequences). Most methods follow a patch-based approach, which is computationally inefficient during synthesis and requires some sort of ‘fusion’ to synthesize a whole image from patch-level results. In this paper, we present a whole image synthesis approach that relies on deep neural networks. Our architecture resembles those of encoder-decoder networks, which aims to synthesize a source MRI modality to an other target MRI modality. The proposed method is computationally fast, it doesn’t require extensive amounts of memory, and produces comparable results to recent patch-based approaches.
V. Sevetlidis and M.V. Giuffrida—Equal contribution.
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Notes
- 1.
There is also the recent exciting unsupervised work by [24], however for ease of introducing the reader to the topic this is not discussed here.
- 2.
Freely available at https://github.com/rasmusbergpalm/DeepLearnToolbox [18]. We modified the current implementation to enable also GPU (CUDA) processing.
- 3.
We use only the CPU and not GPU to permit fair comparison with our MP implementation which does not use GPU.
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Acknowledgement
We thank NVIDIA Inc. for providing us with a Titan X GPU used for our experiments.
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Sevetlidis, V., Giuffrida, M.V., Tsaftaris, S.A. (2016). Whole Image Synthesis Using a Deep Encoder-Decoder Network. In: Tsaftaris, S., Gooya, A., Frangi, A., Prince, J. (eds) Simulation and Synthesis in Medical Imaging. SASHIMI 2016. Lecture Notes in Computer Science(), vol 9968. Springer, Cham. https://doi.org/10.1007/978-3-319-46630-9_13
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