2015 Summer Project Week:USReconstruction

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  Projects List

Key Investigators

• Frank Preiswerk
• Laurent Chauvin
• Andras Lasso
• Tamas Ungi
• Adam Rankin (observer)
• Robert Owen, BK

Project Description

Objective

• This project will investigate the use of a single-element ultrasound transducer for 2D image reconstruction from navigated 2D ultrasound images.
• Technology: invariant feature extraction, descriptor representation.
• Application domains: registration, respiratory motion compensation
• Image domains: Ultrasound.
• Clinical use case scenarios: Establishment of a 4D motion atlas from 2D ultrasound data.

Approach, Plan

• Discussion and documentation
• Algorithms: fast KNN methods, binning.
• Mathematical formalisms: Correlation, similarity measures.

Progress

• Learned how to perform volume reconstruction from tracked 2D ultrasound in plus
• Implemented a binning algorithm for the USrd signal using Principal Component Analysis (PCA)
• Had very insightful discussions with the PLUS developers including the idea of potentially updating older, depreciated functionality in PLUS for gated acquisitions (originally developed for ECG-based gating).

References

Hybrid Utrasound and MRI Acquisitions for High-Speed Imaging of Respiratory Organ Motion
F. Preiswerk, M. Toews, W.S. Hoge, J.G. Chiou, L.P. Panych, W.M. Wells III, B. Madore.
Medical Image Computing and Computer Assisted Intervention (MICCAI), 2015.
PDF © Springer, 2015.

Scanner-less High-Speed MR-Imaging of Repetitive Organ Motion for Image-Guided Therapy
F. Preiswerk, M. Toews, W.S. Hoge, J.G. Chiou, W.M. Wells III, B. Madore.
Medical Image Computing and Computer Assisted Intervention (MICCAI), 2015.
PDF © Springer, 2015.

Detecting Rapid Organ Motion using a Hybrid MR-Ultrasound Setup and Bayesian Data Processing.
M. Toews, C.S. Mei, R. Chu, W. S. Hoge, L. P. Panych, B. Madore
Proceedings of the International Society for Magnetic Resonance in Medicine (ISMRM), 2014, pp. 7309
PDF © ISMRM, 2014.

Boosting MR Temporal Resolution using Rapid Ultrasound Measurements, for Motion-Tracking Purposes.
M. Toews, C.S. Mei, R. Chu, W. S. Hoge, B. M. Schwartz, L. P. Panych, B. Madore
Proceedings of the International Society for Magnetic Resonance in Medicine (ISMRM), 2013, pp. 478. Oral Presentation
PDF © ISMRM, 2013.