NDLI: Three-dimensional digital sonomicrometry: comparison with biplane radiography

Content Provider	IEEE Xplore Digital Library
Author	Meoli, D. Mazhari, R. Dione, D. Omens, J. McCulloch, A. Sinusas, A.
Copyright Year	1998
Description	Author affiliation: Dept. of Med., Yale Univ., New Haven, CT, USA (Meoli, D.)
Abstract	Describes a three-dimensional (3D) digital sonomicrometry approach for locating and tracking 3D objects. A commercial digital sonomicrometry system was employed to measure scalar distances between omnidirectional sonomicrometers. 3D coordinates were then derived using the statistical technique of multidimensional scaling (MDS). 3D digital sonomicrometry was directly compared with biplane radiography of the ultrasound crystals for estimation of 3D distances in static phantoms and in vivo using an experimental canine preparation. An excellent correlation (r=0.992) was seen when comparing intercrystal distances derived from biplane radiography and sonomicrometry 3D coordinate data in the gelphantom. A Bland-Altman analysis shows that the average difference in coordinate determined distance between these two different methodologies was only 0.6310.46 mm, over a range of inter-crystal distances of 3.14 to 17.28 mm. In the in vivo canine preparation, the correlation between the sonomicrometry derived and biplane derived distances was also excellent (r=0.992) with a slope of 1.05 and an intercept of 0.06. The Bland-Altman analysis shows that the average difference in coordinate determined distance between these two different methodologies was only 0.78/spl plusmn/0.74 mm, over a range of inter-crystal distances of 2.90 to 27.66 mm. The authors have demonstrated the feasibility of accurately measuring scalar distances using 3D digital sonomicrometry. Digital sonomicrometry combines high spatial and temporal resolution with availability and portability to accurately measure distances in a closely packed array of implanted piezoelectric crystals.
Starting Page	64
Ending Page	67
File Size	447757
Page Count	4
File Format	PDF
ISBN	0780345444
DOI	10.1109/NEBC.1998.664878
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1998-04-10
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Radiography In vivo Coordinate measuring machines Ultrasonic variables measurement Multidimensional systems Ultrasonic imaging Crystals Imaging phantoms Spatial resolution Availability
Content Type	Text
Resource Type	Article

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