Freehand three-dimensional Doppler demonstration of monochorionic vascular anastomoses in vivo: a preliminary report

Welsh, A.W., Taylor, M.J.O., Cosgrove, D. and Fisk, N.M. (2001) Freehand three-dimensional Doppler demonstration of monochorionic vascular anastomoses in vivo: a preliminary report. Ultrasound in Obstetrics and Gynecology, 18 4: 317-324. doi:10.1046/j.0960-7692.2001.00552.x


Author Welsh, A.W.
Taylor, M.J.O.
Cosgrove, D.
Fisk, N.M.
Title Freehand three-dimensional Doppler demonstration of monochorionic vascular anastomoses in vivo: a preliminary report
Journal name Ultrasound in Obstetrics and Gynecology   Check publisher's open access policy
ISSN 0960-7692
1469-0705
Publication date 2001-10-01
Sub-type Article (original research)
DOI 10.1046/j.0960-7692.2001.00552.x
Open Access Status Not Open Access
Volume 18
Issue 4
Start page 317
End page 324
Total pages 8
Place of publication West Sussex, United Kingdom
Publisher John Wiley & Sons
Language eng
Formatted abstract
Objectives:
To demonstrate the three-dimensional vascular anatomy of monochorionic placental anastomoses in vivo, both arterioarterial and arteriovenous.

Design:

Two-dimensional placental mapping techniques were used to locate arterioarterial and arteriovenous anastomoses. A freehand sweep was performed across the anastomotic site, and multiple images were stored to disk, at 17 Hz. These were then segmented to show only color information (vascular flow) using purpose-designed software (CQ analysis) and the files reconstructed into a three-dimensional volume, for multidirectional viewing and movie generation.

Results:

Both arterioarterial and arteriovenous anastomoses could be visualized in detail. Reconstruction of a dual volume of gray-scale and segmented color images allowed recreation of the vascular anatomy within the placental substance, as well as retention of the original directional flow information.

Conclusions:

Detailed anastomotic anatomy can be demonstrated three dimensionally in vivo. Given the increasing evidence implicating various anastomotic configurations in pathological intertwin transfusion, this technique may prove useful in the antenatal assessment and treatment of monochorionic twin pregnancies.
Keyword Doppler ultrasound
Freehand
Image segmentation
Monochorionic placentation
Monochorionic pregnancy
Three-dimensional ultrasound
Twin-twin transfusion syndrome
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ
Additional Notes Article first published online: 12 December 2002.

Document type: Journal Article
Sub-type: Article (original research)
Collection: Faculty of Health and Behavioural Sciences -- Publications
 
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