High-Speed Markerless Tissue Motion Tracking Using Volumetric Optical Coherence Tomography Images

Volume
2020-April
Start Page
1979
End Page
1982
Article Number
9098448
Citation
IEEE 17th International Symposium on Biomedical Imaging (ISBI 2020)
Contribution to Conference
IEEE 17th International Symposium on Biomedical Imaging (ISBI 2020)  
Publisher DOI
10.1109/ISBI45749.2020.9098448
Scopus ID
2-s2.0-85084376461
Modern optical coherence tomography (OCT) devices provide volumetric images with micrometer-scale spatial resolution and a temporal resolution beyond video rate. In this work, we analyze an OCT-based prototypical tracking system which processes 831 volumes per second, estimates translational motion, and automatically adjusts the field-of-view, which has a size of few millimeters, to follow a sample even along larger distances. The adjustment is realized by two galvo mirrors and a motorized reference arm, such that no mechanical movement of the scanning setup is necessary. Without requiring a marker or any other knowledge about the sample, we demonstrate that reliable tracking of velocities up to 25 mm s-1 is possible with mean tracking errors in the order of 0.25 mm. Further, we report successful tracking of lateral velocities up to 70 mm s-1 with errors below 0.3 mm.
Subjects
motion compensation
Optical coherence tomography
realtime image processing
tracking systems
volumetric imaging