Jl. Alcazar et C. Laparte, IN-VIVO VALIDATION OF THE TIME-DOMAIN VELOCITY-MEASUREMENT TECHNIQUE OF BLOOD-FLOW IN HUMAN FETUSES, Ultrasound in medicine & biology, 24(1), 1998, pp. 9-13
Citations number
18
Categorie Soggetti
Radiology,Nuclear Medicine & Medical Imaging",Acoustics
Time domain ultrasonography is an alternative to Doppler analysis of b
lood flow direction and velocity, The time domain technique uses timin
g information between successive echo pulses to measure flow velocitie
s directly through a color display map, This study was undertaken to v
alidate this technique for measuring peak systolic velocity compared t
o the pulsed-wave Doppler method in human fetuses. Twenty normally dev
eloping fetuses were included in the study, The fetal abdominal aorta
and the umbilical artery were studied in 12 and eight cases, respectiv
ely, We first estimated how velocity using time domain ultrasonography
and inmediately after pulsed Doppler was used. The intraclass correla
tion coefficient was used to assess the agreement between measurements
, A close correlation was found (intraclass correlation coefficient =
0.96), Our results show that time domain ultrasonography seems to be a
valid technique for imaging fetal vessels and for measuring blood how
velocity. (C) 1998 World Federation for Ultrasound in Medicine & Biol
ogy.