scholarly journals Automatic detection of complete and measurable cardiac cycles in antenatal pulsed-wave Doppler signals

2020 ◽  
Vol 190 ◽  
pp. 105336 ◽  
Author(s):  
Eleonora Sulas ◽  
Monica Urru ◽  
Roberto Tumbarello ◽  
Luigi Raffo ◽  
Danilo Pani
Keyword(s):  
Automatic Detection ◽  
Doppler Signals ◽  
Pulsed Wave Doppler

scholarly journals Fetal Dual Doppler Echocardiography

2014 ◽  
Vol 8 (4) ◽  
pp. 376-381
Author(s):  
Takashi Kaji ◽  
Kazuhisa Maeda ◽  
Atsuko Hichijo ◽  
Yohei Takahashi ◽  
Soichiro Nakayama ◽  
...  
Keyword(s):  
Doppler Echocardiography ◽  
Cardiac Rhythm ◽  
Simultaneous Recording ◽  
Image Resolution ◽  
Descending Aorta ◽  
Doppler Signals ◽  
Precise Diagnosis ◽  
Pulsed Wave Doppler ◽  
A New Technique ◽  
Fetal Position

ABSTRACT Dual Doppler echocardiography is a recently developed technique performed using an instrument with two separate sample gates, allowing simultaneous recording of signals from two locations. We describe the use of dual Doppler echocardiography to assess fetal cardiac rhythm. Fetal arrhythmias are common and encountered in 1 to 2% pregnancies. They often resolve spontaneously and do not require treatment, but sometimes lead to severe morbidity and mortality. Fetal arrhythmias are responsive to fetal therapy and require appropriate management through accurate diagnosis. Pulsed wave Doppler and M-mode echocardiography are widely used to assess fetal cardiac rhythm. Both methods have advantages and limitations, which are influenced by fetal position, image resolution, and the complexity of the arrhythmia. We developed a new technique that records pulsed wave Doppler signals in the hepatic vein (HV) and the descending aorta (DAo) simultaneously using dual Doppler. This method is less influenced by fetal position and the complexity of the arrhythmia, and the images have better resolution than those acquired using conventional Doppler methods in most cases. Although, electrical parameters, such as the QT interval cannot be evaluated, dual Doppler recording of flows in HV and DAo is an efficient and effective method for assessing fetal cardiac rhythms, allowing precise diagnosis of cardiac arrhythmias. How to cite this article Kaji T, Maeda K, Hichijo A, Takahashi Y, Nakayama S, Irahara M. Fetal Dual Doppler Echocardiography. Donald School J Ultrasound Obstet Gynecol 2014; 8(4):376-381.

Fetal breathing classification from fetal heart rate Doppler signals

1998 ◽  
Vol 5 (1) ◽  
pp. 168A-168A
Author(s):  
J WILSON ◽  
C LOWERY ◽  
P MURPHY ◽  
W RUSSELL ◽  
R WALLS
Keyword(s):  
Heart Rate ◽  
Fetal Heart Rate ◽  
Fetal Heart ◽  
Doppler Signals ◽  
Fetal Breathing

The automatic detection of unattended social category information from unfamiliar faces

2014 ◽  
Author(s):  
Douglas Martin ◽  
Rachel Swainson ◽  
Gillian Slessor ◽  
Jacqui Hutchison ◽  
Diana Marosi
Keyword(s):  
Automatic Detection ◽  
Social Category ◽  
Category Information ◽  
Unfamiliar Faces
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