Three-dimensional power Doppler indices at 18–22 weeks’ gestation for prediction of fetal growth restriction or pregnancy-induced hypertension

Abstract

3D power Doppler placental vascular indices at 18-22 weeks could not be used to predict high-risk pregnancies that develop FGR or PIH in a low-risk population.

Placental Pulsatility: Quantitative Assessment of Placental Bed Vasculature by 2‐Dimensional Doppler Cine Imaging

“…Previous research aimed at developing a more direct evaluation of placental vascularity relied heavily on 3D power Doppler analysis to quantify the vascular signal within the placenta. Although this approach has been partially validated in phantom and animal studies, the associations with pregnancy outcomes have been inconsistent . In addition, the technical limitations in obtaining accurate and valid 3D power Doppler acquisitions, particularly relating to standardization of machine settings and interpatient comparisons, have substantially impaired the utility of the 3D power Doppler indices .…”

“…Although this approach has been partially validated in phantom and animal studies, 30-33 the associations with pregnancy outcomes have been inconsistent. [13][14][15][16][17][18] In addition, the technical limitations in obtaining accurate and valid 3D power Doppler acquisitions, particularly relating to standardization of machine settings and interpatient comparisons, have substantially impaired the utility of the 3D power Doppler indices. [19][20][21][22][23][24] Although the use of subnoise gain may help adjust for interpatient differences in attenuation, 22,23 the lack of an internal Doppler reference point makes it difficult to accurately compare data across patients.…”

“…However, this approach remains indirect, and the clinical utility has been questioned . Three‐dimensional (3D) power Doppler analysis has been studied to quantify the vascular signal within the placenta; however, the associations with pregnancy outcomes have been inconsistent . In addition, the technical difficulties in accurate and valid 3D power Doppler acquisition, particularly relating to standardization of machine settings, also impair the validity of the 3D power Doppler indices .…”

“…11,12 Three-dimensional (3D) power Doppler analysis has been studied to quantify the vascular signal within the placenta; however, the associations with pregnancy outcomes have been inconsistent. [13][14][15][16][17][18] In addition, the technical difficulties in accurate and valid 3D power Doppler acquisition, particularly relating to standardization of machine settings, also impair the validity of the 3D power Doppler indices. [19][20][21][22][23][24][25] Finally, 3D power Doppler imaging fails to consider the pulsatile nature of the placental vascular bed.…”

Diagnostic value of 3D power Doppler ultrasound in the characterization of thyroid nodules

“…Three-dimensional US is more accurate than two-dimensional examination in the evaluation of anatomical structures and assessment of disease and provides data that can be subjected to repeated evaluation [8,9]. Three-dimensional power Doppler US is able to quantify vascularity within organs, tissues and, tumors [10,11]. From the data obtained with 3D PDUS, vascular indices can be calculated using the Virtual Organ Computer-aided Analysis (VOCAL) software, and tissue vascularization can be shown with numerical values using these indices.…”