scholarly journals Applications of Advanced Ultrasound Technology in Obstetrics

Diagnostics ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1217
Author(s):  
Kwok-Yin Leung
Keyword(s):  
Fetal Heart ◽  
New Techniques ◽  
Advanced Technologies ◽  
4D Ultrasound ◽  
Diagnostic Capability ◽  
Analysis Workflow ◽  
Ultrasound Technology ◽  
Obstetric Ultrasonography ◽  
New Guidelines ◽  
High Resolution Ultrasonography

Over the years, there have been several improvements in ultrasound technologies including high-resolution ultrasonography, linear transducer, radiant flow, three-/four-dimensional (3D/4D) ultrasound, speckle tracking of the fetal heart, and artificial intelligence. The aims of this review are to evaluate the use of these advanced technologies in obstetrics in the midst of new guidelines on and new techniques of obstetric ultrasonography. In particular, whether these technologies can improve the diagnostic capability, functional analysis, workflow, and ergonomics of obstetric ultrasound examinations will be discussed.

Uprated 501F Gas Turbine, 501FA

1994 ◽  
Author(s):  
S. Aoki ◽  
Y. Tsukuda ◽  
E. Akita ◽  
M. Terazaki ◽  
L. D. McIaurin ◽  
...  
Keyword(s):  
Gas Turbine ◽  
Operating Experience ◽  
Test Results ◽  
New Techniques ◽  
Reliability Improvement ◽  
Engineering Approach ◽  
Advanced Technologies ◽  
Cooling Air

This paper introduces the engineering approach taken in developing the 501FA gas turbine, which is an uprated version of the existing 501F 150MW class gas turbine. The concepts and procedures which were utilized to uprate this gas turbine are also presented. To achieve better performance, new techniques were incorporated which reflected test results and operating experience. No advanced technologies were introduced. Instead, well experienced techniques are adopted so as not to deteriorate reliability. Improvement of the performance was mainly achieved mainly due to the reduction of cooling air. Tip clearances were also optimized based on shop test and field results.

scholarly journals Application of KANET in Special Cases: Part I

2013 ◽  
Vol 7 (2) ◽  
pp. 200-207
Author(s):  
Aris Antsaklis ◽  
Panagiotis Antsaklis ◽  
Nicolaos Papantoniou
Keyword(s):  
Nervous System ◽  
Neurological Impairment ◽  
Detailed Examination ◽  
Fetal Outcome ◽  
Fetal Life ◽  
Perinatal Medicine ◽  
4D Ultrasound ◽  
Special Cases ◽  
Ultrasound Findings ◽  
Ultrasound Technology

ABSTRACT The detection of neurological impairment during fetal life has been a great challenge in perinatal medicine for many years. Evolution of ultrasound technology has allowed a more detailed examination of the fetal nervous system and earlier detection of central nervous system (CNS) abnormalities. However, overdiagnosis of CNS malformations or variations can be quite confusing from time to time, as we cannot always be sure how these may affect the fetus and as a result we cannot always advise adequately the parents of the affected fetuses about the prognosis. Defining normal and abnormal fetal neurological function in utero in order to better predict which fetuses are at risk for adverse neurological outcome could assist with the evaluation of the fetal outcome. Four-dimensional (4D) ultrasound has been used for the assessment of normal neurobehavioral development and has identified characteristics of the fetus that could predict neurological developmental dysfunction. Kurjak antenatal neurodevelopmental test (KANET) is a method that has been shown to offer great advantages for the assessment of fetal neurobehavior, and the findings of KANET have been verified in many studies with postnatal assessments. We present a series of cases where KANET could better improve the evaluation of the prognosis that was made based on ultrasound findings. How to cite this article Antsaklis P, Antsaklis A, Papantoniou N, Kurjak A. Application of KANET in Special Cases: Part I. Donald School J Ultrasound Obstet Gynecol 2013;7(2):200-207.

scholarly journals HDliveFlow in the Assessment of Fetal Circulation

2015 ◽  
Vol 9 (4) ◽  
pp. 462-470 ◽  
Author(s):  
Suraphan Sajapala
Keyword(s):  
Blood Flow ◽  
Congenital Heart ◽  
Fetal Heart ◽  
Power Doppler ◽  
Future Research ◽  
Anatomical Landmarks ◽  
Fetal Circulation ◽  
4D Ultrasound ◽  
Placental Blood ◽  
Placental Blood Flow

ABSTRACT With the appearance of the latest three/four-dimensional (3D/4D) ultrasound machine (HDliveFlow, Voluson E10, GE Healthcare, Zipf, Austria), HDliveFlow with glass-body rendering mode or silhouette mode will facilitate more precise assessments of the fetal heart and peripheral circulation. The resolution of 3D/4D color/power Doppler using the HDlive technique shows a significant improvement compared to conventional 3D/4D color/power Doppler and the fetal heart with great vessels, small peripheral vessels, and placental blood flow can now be clearly recognized. HDliveFlow with glass-body rendering mode or silhouette mode combines the advantages of a spatial view of the great arteries in addition to the visualization of anatomical landmarks, such as the spine or diaphragm. Its use may provide potential advantages in cases of congenital heart anomalies and placental vascularity over the use of conventional 3D/4D color/power Doppler. This novel technique may assist in the evaluation of the fetal cardiovascular system and fetoplacental vascularity, and offer potential advantages relative to conventional 2D color/power Doppler assessments. In this article, we present the latest state-of-the-art HDliveFlow with glass-body rendering mode or silhouette mode of normal and abnormal fetal hearts, placentas, and umbilical cords. We also discuss the present and future applicability of 3D/4D color/ power Doppler to assess the fetal circulation. HDliveFlow with glass-body rendering mode or silhouette mode may become an important modality in future research on fetal cardiac and placental blood flow, and assist in the prenatal diagnosis of fetal congenital heart disease and placental vascular abnormalities. How to cite this article Hata T, AboEllail MAM, Sajapala S, Ito M. HDliveFlow in the Assessment of Fetal Circulation. Donald School J Ultrasound Obstet Gynecol 2015;9(4):462-470.

OP33.03: Fetal heart measurement assessed by 4D ultrasound using STIC combined with inversion mode - preliminary results

2009 ◽  
Vol 34 (S1) ◽  
pp. 168-168
Author(s):  
K. Ceglowska ◽  
A. Cegiel ◽  
K. Czekaj ◽  
K. Wasak ◽  
J. Szymkiewicz-Dangel ◽  
...  
Keyword(s):  
Fetal Heart ◽  
Inversion Mode ◽  
Preliminary Results ◽  
4D Ultrasound

scholarly journals Doppler Ultrasound Technology for Fetal Heart Rate Monitoring: A Review

2020 ◽  
Vol 67 (2) ◽  
pp. 226-238 ◽  
Author(s):  
Paul Hamelmann ◽  
Rik Vullings ◽  
Alexander F. Kolen ◽  
Jan W. M. Bergmans ◽  
Judith O. E. H. van Laar ◽  
...  
Keyword(s):  
Heart Rate ◽  
Doppler Ultrasound ◽  
Fetal Heart Rate ◽  
Fetal Heart ◽  
Heart Rate Monitoring ◽  
Fetal Heart Rate Monitoring ◽  
Ultrasound Technology

scholarly journals Feasibility of 2D/4D ultrasound fetal heart scan during first trimester of pregnancy

2013 ◽  
Vol 23 (suppl_1) ◽  
Author(s):  
ML Cara ◽  
S Tudorache ◽  
DG Iliescu ◽  
I Prejbeanu ◽  
N Cernea
Keyword(s):  
Fetal Heart ◽  
First Trimester ◽  
4D Ultrasound ◽  
First Trimester Of Pregnancy

scholarly journals A denoising and enhancing method framework for 4D ultrasound images of human fetal heart

2021 ◽  
Vol 11 (4) ◽  
pp. 1567-1585
Author(s):  
Bin Liu ◽  
Zhao Xu ◽  
Qifeng Wang ◽  
Xiaolei Niu ◽  
Wei Xuan Chan ◽  
...  
Keyword(s):  
Fetal Heart ◽  
Ultrasound Images ◽  
4D Ultrasound ◽  
Human Fetal Heart

scholarly journals Recent Advances in 3D Assessment of Various Fetal Anomalies

2009 ◽  
Vol 3 (3) ◽  
pp. 1-24 ◽  
Keyword(s):  
Antenatal Diagnosis ◽  
Dynamic Features ◽  
Early Gestation ◽  
Recent Advances ◽  
Fetal Physiology ◽  
4D Ultrasound ◽  
Ultrasound Technology ◽  
Definition Of ◽  
Embryonic Death

Abstract Recent advances of ultrasound technology including 3D/4D sonography have revealed embryonal/fetal morphology, intrauterine vascularity and fetal behavior from early gestation. Modern ‘sonoembryology’ allows the definition of in vivo anatomy including visualization of dynamic features, which cannot be characterized in fixed specimens after embryonic death in embryology. Furthermore, recent highresolutional ultrasound technologies have remarkably approached accurate prenatal diagnoses with vivid and distinct sonographic depiction. Nowadays, the antenatal diagnosis is no longer ‘maybe’ nor ambiguous, owing to progressive 3D/4D ultrasound which have contributed to the field of embryology, fetal physiology and pathology.

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