Fast and accurate vision-based stereo reconstruction and motion estimation for image-guided liver surgery
| Autor: | Andrew D. Speers, Burton Ma, William R. Jarnagin, Sharifa Himidan, Amber L. Simpson, Richard P. Wildes |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
phantoms
image matching stereo image processing image reconstruction computerised tomography tumours motion estimation liver image registration medical image processing surgery cancer image texture time series accurate vision-based stereo reconstruction image-guided liver surgery ablation adjacent complex vasculature end-to-end solution coarse-to-fine stereo approach liver imaging three-dimensional boundary recovery robust 3D motion estimator adaptive CTF matching approach liver phantom precise quantitative evaluation liver resection fast vision-based stereo reconstruction oncologic outcome low texture regions adaptive windows volumetric computed tomography scan Medical technology R855-855.5 |
| Zdroj: | Healthcare Technology Letters (2018) |
| Druh dokumentu: | article |
| ISSN: | 2053-3713 |
| DOI: | 10.1049/htl.2018.5071 |
| Popis: | Image-guided liver surgery aims to enhance the precision of resection and ablation by providing fast localisation of tumours and adjacent complex vasculature to improve oncologic outcome. This Letter presents a novel end-to-end solution for fast stereo reconstruction and motion estimation that demonstrates high accuracy with phantom and clinical data. The authors’ computationally efficient coarse-to-fine (CTF) stereo approach facilitates liver imaging by accounting for low texture regions, enabling precise three-dimensional (3D) boundary recovery through the use of adaptive windows and utilising a robust 3D motion estimator to reject spurious data. To the best of their knowledge, theirs is the only adaptive CTF matching approach to reconstruction and motion estimation that registers time series of reconstructions to a single key frame for registration to a volumetric computed tomography scan. The system is evaluated empirically in controlled laboratory experiments with a liver phantom and motorised stages for precise quantitative evaluation. Additional evaluation is provided through testing with patient data during liver resection. |
| Databáze: | Directory of Open Access Journals |
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