The Influence of Hyperoxygenation on Fetal Brain Vascularity Measured Using 3D Power Doppler Ultrasound and the Index “Fractional Moving Blood Volume”

2021 ◽  
pp. 1-9
Author(s):  
Evitta Issa ◽  
Gordon Niall Stevenson ◽  
Ana Elizabeth Gomes De Melo Tavares Ferreira ◽  
Melissa Han Yiin Chang ◽  
Jennifer Alphonse ◽  
...  
Keyword(s):  
Blood Volume ◽  
Doppler Ultrasound ◽  
Power Doppler ◽  
Fetal Brain ◽  
Threshold Effect ◽  
Power Doppler Ultrasound ◽  
Third Trimester ◽  
3D Power Doppler ◽  
Significant Difference ◽  
Before And After

<b><i>Introduction:</i></b> Maternal hyperoxygenation effects on fetal cerebral hemodynamics are largely unknown. This study aimed to determine efficacy and reliability of a validated power Doppler ultrasound (US) index, fractional moving blood volume (FMBV), at measuring fetal cerebral vasculature changes during maternal hyperoxia. <b><i>Methods:</i></b> The fetal cerebral effects of 10 min of hyperoxygenation at 2 flow rates (52%/60% FiO<sub>2</sub>) were evaluated in women in their third trimester of pregnancy. 2D-US and 3D-US in a transverse plane were performed before, during, and following maternal hyperoxygenation with FMBV estimation performed offline. <b><i>Results:</i></b> Forty-five cases provided data for analysis. Mean intraobserver ICCs were 0.89 (3D-FMBV) and 0.84 (2D-FMBV). A significant difference in vascularity before and during and before and after 60% hyperoxia was observed (<i>p</i> &#x3c; 0.05), whereas no significant differences were found at 52% hyperoxia (<i>p</i> &#x3e; 0.05). Significant differences in vascularity were found between 2D-FMBV and 3D-FMBV (<i>p</i> &#x3c; 0.01). <b><i>Conclusion:</i></b> Measurement of fetal cerebral vascularity by 3D-FMBV and 2D-FMBV was highly reproducible. The differing cerebral vascular changes seen with 60% but not 52% FiO<sub>2</sub> suggest a possible “threshold effect” that may have influenced prior studies. Further studies are needed to assess cerebral effects of maternal hyperoxygenation on compromised fetuses.

Study of the Vascularity of Uterine Septum Using Three Dimensional Power Doppler Ultrasound

QJM ◽  
2020 ◽  
Vol 113 (Supplement_1) ◽  
Author(s):  
M I M Amer ◽  
N E Hassan ◽  
M E Ahmed ◽  
H M M Elnaggar
Keyword(s):  
Doppler Ultrasound ◽  
Power Doppler ◽  
Adhesion Formation ◽  
Recurrent Abortion ◽  
Power Doppler Ultrasound ◽  
Septate Uterus ◽  
3D Power Doppler ◽  
Uterine Anomalies ◽  
Significant Difference ◽  
Uterine Septum

Abstract Background Uterine anomalies are a relatively common congenital abnormality, with uterine septum being the most common. This is even truer in patients with recurrent pregnancy loss, in whom rates of uterine abnormalities may approach 15% to 27%. Historically, the uterine septum has been approached via laparotomy through either a Tompkins or Jones procedure. These successful, but highly morbid, procedures require laparotomy with significant hospital stays, subsequent cesarean delivery, and have carried a high risk of adhesion formation. More recently, this surgery has been supplanted by hysteroscopy or other minimally invasive methodologies. Objective To assess the relation between the vascularity of uterine septum and obstetric performance with Transvaginal 3D Power Doppler Ultrasound. Patients and Methods Early Cancer Detection Unit and Ultrasound and Fetal special care Unit in Ain Shams University Maternity Hospital (ASUMH). Recruitment took place between May 2017 and November 2018. Cross-sectional study. The study included 30 cases of women with uterine septum. Intervention: Transvaginal 3D power Doppler ultrasound was done to all cases with septal volume and vascularity assessment using VOCAL system and Histogram facility. The study included 30 patients with septate uterus, twelve of them suffered from 1ry infertility while the other eighteen suffered from recurrent abortion. Results There was statistical significant difference between the two groups regarding vascularity (VI, FI, and VFI) of septum (P &lt; 0.05). Conclusion The vascularity of septate uterus is variable. The power Doppler indices shows that septate uterus in cases with recurrent abortion is highly vascular while in cases with 1ry infertility shows low vascularity. Highly vascular septum may be a site of implantation which may be a cause of recurrent abortion thus; excision of the septum may help prevent recurrent abortion, while low vascular septum may prevent implantation which may be a cause of infertility thus; incision of the septum may help in treatment of infertility. Correlation with histopathologic features of septum may be required to decide the best management of the septum.

3D-Power Doppler Ultrasound of Breast Lesions with a Microbubble Contrast Agent

2002 ◽  
Vol 9 (2) ◽  
pp. S384-S385 ◽  
Author(s):  
C.R Krestan ◽  
C Riedl ◽  
M Memarsadeghi ◽  
M Rudas ◽  
G Pfarl ◽  
...  
Keyword(s):  
Contrast Agent ◽  
Doppler Ultrasound ◽  
Power Doppler ◽  
Breast Lesions ◽  
Power Doppler Ultrasound ◽  
Microbubble Contrast Agent ◽  
3D Power Doppler

scholarly journals P43.05: Assessment of benign ovarian masses with the use of 3D and 3D power Doppler ultrasound

2007 ◽  
Vol 30 (4) ◽  
pp. 615-615
Author(s):  
N. Vrachnis ◽  
A. Alamanou ◽  
Z. Iliodromiti ◽  
A. Pavlaki ◽  
D. Botsis ◽  
...  
Keyword(s):  
Doppler Ultrasound ◽  
Power Doppler ◽  
Power Doppler Ultrasound ◽  
3D Power Doppler ◽  
Ovarian Masses

scholarly journals Quantitative analysis of normal fetal brain volume and flow by three-dimensional power Doppler ultrasound

2013 ◽  
Vol 76 (9) ◽  
pp. 504-509 ◽  
Author(s):  
Ju-Chun Hsu ◽  
Yi-Cheng Wu ◽  
Peng-Hui Wang ◽  
Hsing-I Wang ◽  
Chi-Mou Juang ◽  
...  
Keyword(s):  
Quantitative Analysis ◽  
Doppler Ultrasound ◽  
Brain Volume ◽  
Power Doppler ◽  
Three Dimensional ◽  
Fetal Brain ◽  
Power Doppler Ultrasound

scholarly journals Three-Dimensional Power Doppler Analysis of Cerebral Circulation in Normal and Growth-Restricted Fetuses

2009 ◽  
Vol 29 (9) ◽  
pp. 1609-1618 ◽  
Author(s):  
Jose L Bartha ◽  
Eva M Moya ◽  
Blas Hervías-Vivancos
Keyword(s):  
Doppler Ultrasound ◽  
Cerebral Circulation ◽  
Pulsatility Index ◽  
Power Doppler ◽  
Three Dimensional ◽  
Flow Index ◽  
Power Doppler Ultrasound ◽  
3D Power Doppler ◽  
Doppler Indices ◽  
Vascularization Index

The objective of the present study was to evaluate fetal cerebral circulation by using three-dimensional (3D) power Doppler ultrasound in normal and growth-restricted fetuses. A total of 100 normal grown fetuses were compared with other 25 with growth restriction (FGR). Three-dimensional power Doppler ultrasound was used to assess fetal cerebral 3D vascular indices: vascularization index, flow index (FI), and vascularization flow index (VFI). Both FI and VFI correlated positively with gestational age. On average, all the 3D vascular indices were increased in fetuses with FGR. The proportion of fetuses detected as having hemodynamic redistribution was higher when using 3D power Doppler indices than by means of the middle cerebral artery pulsatility index (52% versus 20%, P = 0.002). In conclusion, two of the three indices increased during gestation. All the fetal cerebral 3D vascular indices are increased in fetuses with FGR. In these fetuses, there were more cases suggesting hemodynamic redistribution than expected by conventional Doppler studies.

The use of 3D power doppler ultrasound in the quantification of blood vessels in uterine fibroids: Feasibility and reproducibility

2014 ◽  
Vol 43 (3) ◽  
pp. 171-178 ◽  
Author(s):  
Lotte L. Nieuwenhuis ◽  
Heleen E. Betjes ◽  
Wouter J.K. Hehenkamp ◽  
Martijn W. Heymans ◽  
Hans A.M. Brolmann ◽  
...  
Keyword(s):  
Blood Vessels ◽  
Doppler Ultrasound ◽  
Power Doppler ◽  
Uterine Fibroids ◽  
Power Doppler Ultrasound ◽  
3D Power Doppler
Sign in / Sign up

Export Citation Format

Share Document