Distance Estimation for 3D Freehand Ultrasound-Scans with Visualization System

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Wei, Hsi-Cheng Don




Some primary concerns with freehand 3D ultrasound are time-consuming calibration operations, overall accuracy, and computation time during the 3D reconstruction process. A procedure was developed to reduce the calibration time to only 10 seconds by planning the path of the probe. A decrease in marginal error may improve the overall accuracy by searching axial and lateral distances with a maximum correlation coefficient, and was based on constructing an adaptive decorrelation curve from images containing Rayleigh and coherent scatters. Marginal errors were reduced in the range of 3% to 11% when the distance estimation was between 0.15mm and 0.375mm in in-vitro studies. To save computation time within the 3D reconstruction, a low-resolution 3D reconstruction algorithm is proposed so that verification can be completed prior to computing a high-resolution reconstruction.


Biophysics - Medical




Carleton University

Thesis Degree Name: 

Master of Applied Science: 

Thesis Degree Level: 


Thesis Degree Discipline: 

Biomedical Engineering

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Theses and Dissertations

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