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Localization of Accessory Pathways in Wolff-Parkinson-White Syndrome by Phase Imaging

Peter Rakovec, Igor Kranjec, J Fettich, V. Fidler, D. Punger ccaron ar, A. Janežič, M. Porenta, B. Varl

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Abstract

Phase image analysis of blood pool scintigrams was performed in 6 patients with Wolff-Parkinson-White (WPW) syndrome to determine the relationship of phase changes and abnormalities of atrioventricular conduction. The site of preexcitation was located by invasive endocardial mapping. The phase advance generally correlated with the electrophysiologically determined location of the accessory pathway. Factors which increase or decrease the amount of preexcitation also increased or decreased the advance of mean phase angles. Phase imaging is a useful noninvasive means for tentative location of accessory pathways in WPW syndrome.

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What this paper is about

Phase image analysis of blood pool scintigrams was performed in 6 patients with Wolff-Parkinson-White (WPW) syndrome to determine the relationship of phase changes and abnormalities of atrioventricular conduction. The site of preexcitation was located by invasive endocardial mapping. The phase advance generally correlated with the electrophysiologically determined location of the accessory pathway. Factors which increase or decrease the amount of preexcitation also increased or decreased the advance of mean phase angles. Phase imaging is a useful noninvasive means for tentative location of accessory pathways in WPW syndrome.

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Available abstract

Phase image analysis of blood pool scintigrams was performed in 6 patients with Wolff-Parkinson-White (WPW) syndrome to determine the relationship of phase changes and abnormalities of atrioventricular conduction. The site of preexcitation was located by invasive endocardial mapping. The phase advance generally correlated with the electrophysiologically determined location of the accessory pathway. Factors which increase or decrease the amount of preexcitation also increased or decreased the advance of mean phase angles. Phase imaging is a useful noninvasive means for tentative location of accessory pathways in WPW syndrome.

Key concepts: Accessory pathway, WPW SYNDROME, Medicine, Phase imaging, Cardiology, Internal medicine, Phase (matter), Anatomy

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