Doppler ultrasound and subjective assessment of fetal activity.

Doppler ultrasound assessment of fetal anaemia in an alloimmunised pregnancy

Introduction While the use of elevated middle cerebral artery peak systolic velocity (MCA PSV) in assessing fetal anaemia is well known, its occurrence is uncommon due to the current practice of giving prophylactic doses of ultrafiltered Rh (D) immunoglobulin (anti-D) in Rh (D) negative women. In mothers who do not receive prophylaxis with Rh immunoglobulin, the overall risk of immunisation for...

Multidimensional Ultrasound Doppler Signal Analysis for Fetal Activity Monitoring.

Fetal activity parameters such as movements, heart rate and the related parameters are essential indicators of fetal wellbeing, and no device provides simultaneous access to and sufficient estimation of all of these parameters to evaluate fetal health. This work was aimed at collecting these parameters to automatically separate healthy from compromised fetuses. To achieve this goal, we first de...

Ultrasound 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...

Template-based Quality Assessment of the Doppler Ultrasound Signal for Fetal Monitoring

One dimensional Doppler Ultrasound (DUS) is a low cost method for fetal auscultation. However, accuracy of any metrics derived from the DUS signals depends on their quality, which relies heavily on operator skills. In low resource settings, where skill levels are sparse, it is important for the device to provide real time signal quality feedback to allow the re-recording of data. Retrospectivel...

Doppler ultrasound studies of human fetal blood flow.