Quantitative IVUS blood flow using an array catheter

F. A. Lupotti*, F. Mastik, S. G. Carlier, E. I. Céspedes, A. F.W. Van Der Steen

*Corresponding author for this work

Research output: Contribution to journalConference articlePopular

4 Citations (Scopus)

Abstract

In recent years, a new method to measure transverse blood flow, based on the decorrelation of the Radio Frequency (RF) signals has been introduced. In this paper, we studied the decorrelation characteristics of transverse blood flow using an intravascular ultrasound (IVUS) array catheter by means of computer modeling. Blood was modeled first as randomly located point scatterers and second as aggregates moving across the ultrasound beam. Next, spread of flow and flow gradient were simulated. IVUS flow measurements were used to study the influence of the ring-down size on flow measurements. Coronary Flow Reserve (CFR) was computed from this data and from a calibrated Transonic flowmeter. The decorrelation pattern for point scatterers, for aggregates and for non-homogeneous flow is in agreement with theoretical predictions from sound field calculations. Underestimation of flow occurs by the ring-down obscuring but good agreement between IVUS and flowmeter CFR was found.

Original languageEnglish
Pages (from-to)5-8
Number of pages4
JournalComputers in Cardiology
Publication statusPublished - 2001
EventComputer in Cardiology 2001 - Rotterdam, Netherlands
Duration: 23 Sep 200126 Sep 2001

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