Evaluation of factors influencing arterial Doppler waveforms in an in vitro flow phantom.

ABSTRACT:

Purpose

The aim of this study was to investigate factors that influence arterial Doppler waveforms in an in vitro phantom to provide a more accurate and comprehensive explanation of the Doppler signal.

Methods

A flow model was created using a pulsatile artificial heart, rubber or polyethylene tubes, a water tank, and a glass tube. Spectral Doppler tracings were obtained in multiple combinations of compliance, resistance, and pulse rate. Peak systolic velocity, minimum diastolic velocity, resistive index (RI), pulsatility index, early systolic acceleration time, and acceleration index were measured. On the basis of these measurements, the influences of the variables on the Doppler waveforms were analyzed.

Results

With increasing distal resistance, the RI increas

SUBMITTER: Sung CK 

PROVIDER: S-EPMC5207360 | biostudies-literature | 2017 Jan

REPOSITORIES: biostudies-literature