Sensorless Reconstruction of Unconstrained Freehand 3D Ultrasound Data
نویسندگان
چکیده
منابع مشابه
Sensorless reconstruction of unconstrained freehand 3D ultrasound data.
Freehand 3D ultrasound can be acquired without a position sensor by finding the separations of pairs of frames using information in the images themselves. Previous work has not considered how to reconstruct entirely freehand data, which can exhibit irregularly spaced frames, intersecting frames, nonmonotonic out-of-plane probe motion and significant in-plane motion. This paper presents reconstr...
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Freehand 3D ultrasound can be acquired without a position sensor by using image-based positioning methods. In-plane motion can be tracked using image registration between nearby images. Elevational probe motion can be determined from the decorrelation between images. However, a freehand scan involves rotational as well as translational motion, and this affects the decorrelation. If this effect ...
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Freehand 3D ultrasound can be acquired without a position sensor by finding the separations of pairs of frames using information in the images themselves. However, small biases in the offset estimates lead to large scale drift in the final reconstruction. In comparison, position sensors have good large scale accuracy, but are inconvenient to use. In this paper, we present methods that combine e...
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Freehand 3D ultrasound can be acquired without a position sensor by deducing the elevational probe motion from the interframe speckle decorrelation. However, a freehand scan involves lateral and axial, as well as elevational, probe motion. The lateral sampling is determined by the A-line separation and is relatively sparse: lateral motion tracking therefore requires subsample interpolation. In ...
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The reconstruction of 3D ultrasound (US) images from mechanically registered, but otherwise irregularly positioned, B-scan slices is of great interest in image guided therapy procedures. Conventional 3D ultrasound algorithms have low computational complexity, but the reconstructed volume suffers from severe speckle contamination. Furthermore, the current method cannot reconstruct uniform high-r...
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ژورنال
عنوان ژورنال: Ultrasound in Medicine & Biology
سال: 2007
ISSN: 0301-5629
DOI: 10.1016/j.ultrasmedbio.2006.09.015