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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
medicine
Phase mapping from left ventricular radionuclide ventriculograms: Interobserver reliability and accuracy of the programme
Nuclear Medicine Communications, Volume 8, No. 10, Year 1987
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Description
Phase analysis of data from radionuclide ventriculograms is known to provide space-time information on the mechanical emptying of pixels located in the ventricular regions. It could therefore perhaps be useful for detecting abnormal sequences of contraction of the ventricles as well as to localize sites of premature electromechanical action. The phase programme used in this investigation is designed to trace the electromechanical action of the ventricles from colour-coded phase images (first harmonic Fourier transform), not only visually from a cinematic representation, but particularly from a data output of x, y coordinates and phase angles of sites chosen as they empty in the ventricular regions. Six healthy baboons were subjected to conventional radionuclide ventriculography, performed hourly for the duration of 11 h under anaesthesia. The programme was used by two independent observers to map the progression of emptying for each of the thus acquired 66 left ventricular phase images. The interobserver reliability and the accuracy achieved in mapping normal contraction patterns was found to be good. Abnormalities which appeared during the prolonged anaesthesia and which were confirmed with 12 lead electrocardiography were likewise detected consistently. © 1987 Chapman and Hall Ltd.
Authors & Co-Authors
Dormehl, Irene C.
South Africa, Pretoria
University of Pretoria
Burow, Robert D.
United States, Oklahoma City
University of Oklahoma Health Sciences Center
Hugo, Nicolaas
South Africa, Pretoria
University of Pretoria
Maree, Marianna
South Africa, Pretoria
University of Pretoria
van Zandwijk, C.
South Africa, Pretoria
University of Pretoria
van Vuuren, C. J.
South Africa, Pretoria
University of Pretoria
Adam, Willi Ernst
Germany, Ulm
Universitätsklinikum Ulm
Statistics
Citations: 7
Authors: 7
Affiliations: 3
Identifiers
Doi:
10.1097/00006231-198710000-00006
ISSN:
01433636
e-ISSN:
14735628
Research Areas
Maternal And Child Health