NDLI: High speed dynamic 3-D surface imaging via stereotactic radiography

Content Provider	IEEE Xplore Digital Library
Author	Thornton, M.M. Vesely, I.
Copyright Year	1995
Description	Author affiliation: John P. Robarts Res. Inst., London, Ont., Canada (Thornton, M.M.)
Abstract	Conventional medical imaging modalities are incapable of imaging objects moving at the speeds of opening and closing heart valves. Such an imaging system would require an acquisition time of 1 msec or less to eliminate image distortion. A novel imaging system which couples an electronically gated CCD (charge coupled device) camera and an XRII (X-ray image intensifier) is used to image the motion of small lead markers on the surface of aortic valve cusps. Two independent (non-coplanar) views are acquired and used to reconstruct the 3-D position of the markers throughout the cardiac cycle. The surface geometry is then reconstructed into a tensor product surface by fitting B-spline meshes to the lead marker positions. The aim of this study is to obtain 3-D geometric information which describes the deformations experienced by the aortic cusp throughout the cardiac cycle.
Starting Page	451
Ending Page	452
File Size	309499
Page Count	2
File Format	PDF
ISBN	0780324757
DOI	10.1109/IEMBS.1995.575195
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1995-09-20
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Radiography Surface fitting Optical imaging Surface reconstruction Charge-coupled image sensors Image reconstruction Biomedical imaging Heart valves Charge coupled devices X-ray imaging
Content Type	Text
Resource Type	Article

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