ISSN:
1619-7089
Keywords:
Ejection fraction
;
Fourier analysis
;
Second-derivative techniques
;
Edge detection
;
Ventriculography
Source:
Springer Online Journal Archives 1860-2000
Topics:
Medicine
Notes:
Summary In order to measure ejection fractions (EFs) from nuclear ventriculograms, we devised a semi-automated edge-detection technique based on a combination of inverse Fourier analysis and second-derivative techniques. Initial clinical studies showed that, for the left ventricle, our method gives EF values statistically identical with those obtained using a conventional isocontour technique. For the right ventricle, however, the values obtained using the two methods were somewhat more at variance. Despite requiring a longer processing time, the results obtained with our method are reproducible because less operator intervention is necessary.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00364731