Tracking of fetal breathing movements by pulsed Doppler ultrasound
نویسندگان
چکیده
منابع مشابه
Ultrasound measurements of fetal breathing movements in the rat.
The goal of this study was to determine when fetal breathing movements (FBMs) commence in the rat and to characterize age-dependent changes of FBMs in utero. These data provide a frame of reference for parallel in vitro studies of the cellular, synaptic, and network properties of the perinatal rat respiratory system. Ultrasound recordings were made from unanesthetized Sprague-Dawley rats from e...
متن کاملUltrasound bioeffects in rats: quantification of cellular damage in the fetal liver after pulsed Doppler imaging.
OBJECTIVE To determine whether pulsed Doppler examination of the ductus venosus in rat fetuses could damage exposed tissue. METHODS On gestational day 18, the livers of a mean of approximately five fetuses per mother (n = 5.14, SD = 1.6), in a cohort of 35 pregnant female rats, were exposed individually to pulsed Doppler and these were considered the 'exposed group'. The remaining fetuses in ...
متن کاملAutomated Detection of Fetal Movements in Doppler Ultrasound Signals versus Maternal Perception
Analysis of movement activity is important since it enables detection of nonreactive fetal heart rate recordings. The aim of the study was to develop an algorithm for automated detection of the fetal movement activity (actogram), based on analysis of the Doppler ultrasound signal, and to evaluate a reliability of the actogram as a source of information about the fetal movements. Bandpass filter...
متن کاملUltrasound Frontiers: 3D Doppler, Automatic Fetal Biometry, Handheld Ultrasound
Ultrasound frontiers are infinitive and some recent developments are discussed in this review. The author aims to provide the reader with the definition of 3D Doppler and its potential clinical applications. It also describes automatic fetal biometry and discusses clinical potentials of handheld ultrasound. The rapid development of these new sonographic techniques will continue to enlarge the s...
متن کاملA new photogrammetric method to measure fetal breathing movements.
OBJECTIVE In most recent studies, fetal respiratory movements have been measured with real-time and Doppler echography. We describe an alternative approach using photogrammetry that provides more objective measurements. METHODS Respiratory movements were studied in 28 women with uncomplicated pregnancies of 30-38 weeks' gestation. Fetal echographic images were recorded on videotape and digiti...
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ژورنال
عنوان ژورنال: Ultrasound in Obstetrics and Gynecology
سال: 1991
ISSN: 0960-7692
DOI: 10.1046/j.1469-0705.1991.01030202.x