NDLI: Foreshortening display: an on-line method for spatial interpretation and projection assessment of the target coronary segment

Content Provider	IEEE Xplore Digital Library
Author	Wunderlich, W. Fischer, F. Morguet, A.J. Arntz, H.R. Horstkotte, D. Schultheiss, H.P.
Copyright Year	1998
Description	Author affiliation: Freie Univ. Berlin, Germany (Wunderlich, W.)
Abstract	In biplane coronary angiography, the operator frequently does not achieve a projection of the target coronary segment without foreshortening. To support the visual assessment of lesion geometry, the authors developed the Foreshortening Display (FD). With this procedure a triangle consisting of the imaged segmental axis, non-foreshortened axis and foreshortening height is calculated and displayed in each angiographic plane. The validity of FD calculation was examined by a wire grid imaged in common angiographic views. The calculated foreshortening values were compared with the true values. FD values showed an accuracy and precision of 0.05%/spl plusmn/0.62%. Alignment and shape of FD indicate spatial orientation and foreshortening of the target vessel in each angiographic plane. The authors' long-term experience with FD in the analysis of 3022 coronary angiograms showed over 30% foreshortening in 660 cases demonstrating the need for the method.
Starting Page	437
Ending Page	440
File Size	941895
Page Count	4
File Format	PDF
ISBN	0780352009
ISSN	02766547
DOI	10.1109/CIC.1998.731896
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1998-09-13
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Image segmentation X-ray imaging Angiography Image reconstruction Lesions Geometry Image intensifiers Computer displays Hospitals Wire
Content Type	Text
Resource Type	Article

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