超音波画像の再スライスによるデータ拡張と血管再構成
Reslicing Ultrasound Images for Data Augmentation and Vessel Reconstruction
追跡した2D超音波画像から3Dボリュームを再構成して再スライスすることで、生体内では得にくい視点の画像を生成する弱教師ありデータ拡張手法RESUSを提案し、血管のセマンティックセグメンテーション精度を向上させた。
著者: Cecilia Morales, Jason Yao, Tejas Rane, Robert Edman, Howie Choset, Artur Dubrawski
分類: eess.IV, cs.CV, cs.LG, cs.RO
原文アブストラクト
Robot-guided catheter insertion has the potential to deliver urgent medical care in situations where medical personnel are unavailable. However, this technique requires accurate and reliable segmentation of anatomical landmarks in the body. For the ultrasound imaging modality, obtaining large amounts of training data for a segmentation model is time-consuming and expensive. This paper introduces RESUS (RESlicing of UltraSound Images), a weak supervision data augmentation technique for ultrasound images based on slicing reconstructed 3D volumes from tracked 2D images. This technique allows us to generate views which cannot be easily obtained in vivo due to physical constraints of ultrasound imaging, and use these augmented ultrasound images to train a semantic segmentation model. We demonstrate that RESUS achieves statistically significant improvement over training with non-augmented images and highlight qualitative improvements through vessel reconstruction.
