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Proceedings Paper

On the nature of data collection for soft-tissue image-to-physical organ registration: a noise characterization study
Author(s): Jarrod A. Collins; Jon S. Heiselman; Jared A. Weis; Logan W. Clements; Amber L. Simpson; William R. Jarnagin; Michael I. Miga
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Paper Abstract

In image-guided liver surgery (IGLS), sparse representations of the anterior organ surface may be collected intraoperatively to drive image-to-physical space registration. Soft tissue deformation represents a significant source of error for IGLS techniques. This work investigates the impact of surface data quality on current surface based IGLS registration methods. In this work, we characterize the robustness of our IGLS registration methods to noise in organ surface digitization. We study this within a novel human-to-phantom data framework that allows a rapid evaluation of clinically realistic data and noise patterns on a fully characterized hepatic deformation phantom. Additionally, we implement a surface data resampling strategy that is designed to decrease the impact of differences in surface acquisition. For this analysis, n=5 cases of clinical intraoperative data consisting of organ surface and salient feature digitizations from open liver resection were collected and analyzed within our human-to-phantom validation framework. As expected, results indicate that increasing levels of noise in surface acquisition cause registration fidelity to deteriorate. With respect to rigid registration using the raw and resampled data at clinically realistic levels of noise (i.e. a magnitude of 1.5 mm), resampling improved TRE by 21%. In terms of nonrigid registration, registrations using resampled data outperformed the raw data result by 14% at clinically realistic levels and were less susceptible to noise across the range of noise investigated. These results demonstrate the types of analyses our novel human-to-phantom validation framework can provide and indicate the considerable benefits of resampling strategies.

Paper Details

Date Published: 3 March 2017
PDF: 12 pages
Proc. SPIE 10135, Medical Imaging 2017: Image-Guided Procedures, Robotic Interventions, and Modeling, 101351Y (3 March 2017); doi: 10.1117/12.2255844
Show Author Affiliations
Jarrod A. Collins, Vanderbilt Univ. (United States)
Jon S. Heiselman, Vanderbilt Univ. (United States)
Jared A. Weis, Vanderbilt Univ. (United States)
Logan W. Clements, Vanderbilt Univ. (United States)
Amber L. Simpson, Memorial Sloan-Kettering Cancer Ctr. (United States)
William R. Jarnagin, Memorial Sloan-Kettering Cancer Ctr. (United States)
Michael I. Miga, Vanderbilt Univ. (United States)
Vanderbilt Univ. Medical Ctr. (United States)
Vanderbilt Institute in Surgery and Engineering (United States)

Published in SPIE Proceedings Vol. 10135:
Medical Imaging 2017: Image-Guided Procedures, Robotic Interventions, and Modeling
Robert J. Webster III; Baowei Fei, Editor(s)

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