Semi-automated analysis of doppler images for quantification of changes in mitral inflow pattern during parabolic flight

E. G. Caiani, G. Asquer, E. Meraviglia, S. Cerutti, M. Turiel, O. Bailliart, B. Cholley, A. Capderou, P. Vaida

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

To study changes in left ventricular (LV) mitral inflow induced by gravitational stresses, and evaluate the effects due to different postures, we performed transthoracic Doppler imaging during parabolic flights on 7 normal subjects (mean age □ SD, 46±5 years) in standing upright and resting position. To detect Doppler velocity profiles, a semi-automatically procedure based on local image properties, was applied. Then, LV inflow parameters were automatically computed and their modifications according to different gravity conditions were found: in standing, LV diastolic rapid filling parameters were significantly affected (E-wave peak, cm/s: from 54.7±11.1 at 1G to 85.8±12.1 at 0G; E-wave integral, cm: from 6.6±1.7 at 1G to 13.1±3.2 at 0G; E/A integral ratio, a.u.: from 1.4±7 at 1G to 2.5±8 at 0G), while late diastolic filling parameters were preserved (A-wave peak, cm/s: from 48.8±3.6 at 1G to 55.3±11.3 at 0G). No changes were noted while subjects were in supine resting.

Original languageEnglish
Title of host publicationComputers in Cardiology
EditorsA. Murray
Pages321-324
Number of pages4
Volume31
Publication statusPublished - 2004
EventComputers in Cardiology 2004 - Chicago, IL, United States
Duration: Sep 19 2004Sep 22 2004

Other

OtherComputers in Cardiology 2004
Country/TerritoryUnited States
CityChicago, IL
Period9/19/049/22/04

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine
  • Software

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