scholarly journals Intraobserver and interobserver reproducibility of three-dimensional gray-scale and power Doppler ultrasound examinations of the cervix in pregnant women

2005 ◽  
Vol 26 (2) ◽  
pp. 132-137 ◽  
Author(s):  
L. Rovas ◽  
P. Sladkevicius ◽  
E. Strobel ◽  
L. Valentin
Keyword(s):  
Pregnant Women ◽  
Doppler Ultrasound ◽  
Power Doppler ◽  
Three Dimensional ◽  
Power Doppler Ultrasound ◽  
Gray Scale ◽  
Interobserver Reproducibility

scholarly journals Difference between Vascularization Indexes of the Placenta in Severe Pre-eclampsia and Normal Pregnancy by Three-dimensional Power Doppler Ultrasound

2014 ◽  
Vol 8 (4) ◽  
pp. 329-335 ◽  
Author(s):  
Wiku Andonotopo ◽  
Herman Kristanto ◽  
Julian Dewantiningrum ◽  
Besari Adi Pramono
Keyword(s):  
Pregnant Women ◽  
Doppler Ultrasound ◽  
Gestational Age ◽  
Power Doppler ◽  
Three Dimensional ◽  
Normal Pregnancy ◽  
Flow Index ◽  
Control Group ◽  
Power Doppler Ultrasound ◽  
3D Power Doppler

ABSTRACT Aim The object of this study was to analyze the vascularization index of three-dimensional (3D) power Doppler ultrasound (PDUS) of the placenta in severe pre-eclampsia compared with normal pregnancy conditions by vascular biopsy sampling sphere. Subjects and methods This study is a prospective longitudinal observational study on 80 pregnant women which divided into 2 groups: Group I (study group) were 40 pregnant women with severe pre-eclampsia, group II (control group) were 40 pregnant women without disorder. Variables examined in this study were vascular index (VI), flow index (FI) and vascular flow index (VFI) of the 3D-PD placental perfusion. Its correlation to gestational age in normal pregnancy compared with the condition of preeclampsia were obtained by taking multiple biopsy sampling vascular sphere. All pregnant women underwent 3D PD-US examination (single examination only), data volume recorded of the placenta allows for off-line analysis without the presence of the patient, thus allowing the data analysis done anywhere and anytime by observers for the comparative analysis of interobserver reliability. Results The placenta can be visualized perfectly in both of the study group and also the control group. Average Kappa value for the acquisition of placental vascularization index measurements with 3D PD-US was 0.72 (0.61-0.82), 0.73 (0.65-0.82) and 0.71 (0.61-0.81) for VI, FI and VFI in the range of 20 to 38 weeks showed good interobserver reliability. All 3D power Doppler indices had a significant association with gestational age, with VI showed a less significant relationship (r = 0.207, p = 0.0139) and FI has the most significant relationship (r = 0.582, p < 0.001). FI index increased progressively with gestational age, while the VI index values indicate dispersion pattern and reached a plateau from week 30 onwards. Entering week 37th, there was a decrease in the value of the index VI until the end of pregnancy. Meanwhile, VFI index appears to resemble the pattern of a combination of both VI and FI index (r = 0.692, p <0.001). Conclusion All parameters of 3D power Doppler index was lower in the severe pre-eclampsia compared with normal pregnancy. 3D PD-US can be used to assess the vascularization of the placenta and the intensity of intra-placental blood flow. Placental vascular biopsy method is fairly efficient way to perform routine evaluations evolution of placental vascular branch during pregnancy. How to cite this article Andonotopo W, Kristanto H, Dewantiningrum J, Pramono BA. Difference between Vascularization Indexes of the Placenta in Severe Pre-eclampsia and Normal Pregnancy by Three-dimensional Power Doppler Ultrasound. Donald School J Ultrasound Obstet Gynecol 2014;8(4):329-335.

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

Three-dimensional power Doppler ultrasound in the early assessment of response to concurrent chemo-radiotherapy for advanced cervical cancer

2017 ◽  
Vol 58 (9) ◽  
pp. 1147-1154 ◽  
Author(s):  
Yan Xu ◽  
Lijing Zhu ◽  
Tong Ru ◽  
Huanhuan Wang ◽  
Jian He ◽  
...  
Keyword(s):  
Cervical Cancer ◽  
Doppler Ultrasound ◽  
Power Doppler ◽  
Three Dimensional ◽  
Complete Response ◽  
Advanced Cervical Cancer ◽  
Power Doppler Ultrasound ◽  
Cervical Lesions ◽  
Early Assessment ◽  
Prospective Longitudinal

Background Three-dimensional power Doppler ultrasound (3D-PDU) imaging has been widely applied to the differentiation of benign and malignant cervical lesions; however, its potential value for predicting response to chemo-radiotherapy has not been fully explored. Purpose To investigate the feasibility of 3D-PDU imaging in predicting treatment response in patients receiving concurrent chemo-radiotherapy (CCRT) for advanced cervical cancer. Material and Methods Fifty-two patients with advanced cervical cancer who received CCRT underwent 3D-PDU examinations at four timepoints: pre-therapy (baseline), 1 week and 2 weeks during, as well as immediately post CCRT. Final tumor response was determined by change in tumor size using magnetic resonance imaging (MRI). Cervical tumor volumes and vascular indices were calculated and compared with the clinical outcome. Results Of the 52 patients, 32 patients who completed all four examinations were included in the analyses: 21 were classified as complete response (CR) and 11 as partial response (PR). During the treatment, the CR group showed that 3D vascular indices (VI and VFI) significantly increased at 1 week ( P = 0.028, P = 0.017, respectively) then decreased at 2 weeks and obviously decreased at therapy completion (both P < 0.001), whereas tumors significantly decreased in volume at 2 weeks after therapy initiation ( P < 0.05). However, no significant differences in 3D vascular indices values were seen in the PR group during the treatment course (all P > 0.05). Conclusion Prospective longitudinal 3D-PDU imaging may have potentials in monitoring early therapeutic response to CCRT in patients with cervical cancer.

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