Find in Library
Search millions of books, articles, and more
Indexed Open Access Databases
Learning deep abdominal CT registration through adaptive loss weighting and synthetic data generation.
oleh: Javier Pérez de Frutos, André Pedersen, Egidijus Pelanis, David Bouget, Shanmugapriya Survarachakan, Thomas Langø, Ole-Jakob Elle, Frank Lindseth
| Format: | Article |
|---|---|
| Diterbitkan: | Public Library of Science (PLoS) 2023-01-01 |
Deskripsi
<h4>Purpose</h4>This study aims to explore training strategies to improve convolutional neural network-based image-to-image deformable registration for abdominal imaging.<h4>Methods</h4>Different training strategies, loss functions, and transfer learning schemes were considered. Furthermore, an augmentation layer which generates artificial training image pairs on-the-fly was proposed, in addition to a loss layer that enables dynamic loss weighting.<h4>Results</h4>Guiding registration using segmentations in the training step proved beneficial for deep-learning-based image registration. Finetuning the pretrained model from the brain MRI dataset to the abdominal CT dataset further improved performance on the latter application, removing the need for a large dataset to yield satisfactory performance. Dynamic loss weighting also marginally improved performance, all without impacting inference runtime.<h4>Conclusion</h4>Using simple concepts, we improved the performance of a commonly used deep image registration architecture, VoxelMorph. In future work, our framework, DDMR, should be validated on different datasets to further assess its value.