Color Doppler and Three-Dimensional Sonographic Imaging in Infertility

2003 ◽  
pp. 112-112
Author(s):  
A Kurjak ◽  
S Kupesic ◽  
D Bjelos
Keyword(s):  
Color Doppler ◽  
Three Dimensional ◽  
Sonographic Imaging

scholarly journals Three-Dimensional Arterial Pulse Signal Acquisition in Time Domain Using Flexible Pressure-Sensor Dense Arrays

Micromachines ◽  
2021 ◽  
Vol 12 (5) ◽  
pp. 569
Author(s):  
Jianzhong Chen ◽  
Ke Sun ◽  
Rong Zheng ◽  
Yi Sun ◽  
Heng Yang ◽  
...  
Keyword(s):  
Radial Artery ◽  
Pressure Sensor ◽  
Pulse Width ◽  
Printed Circuit Boards ◽  
Color Doppler ◽  
Three Dimensional ◽  
Pressure Sensors ◽  
Sensor Arrays ◽  
Signal Acquisition ◽  
Dynamic Pulse

In this study, we developed a radial artery pulse acquisition system based on finger-worn dense pressure sensor arrays to enable three-dimensional pulse signals acquisition. The finger-worn dense pressure-sensor arrays were fabricated by packaging 18 ultra-small MEMS pressure sensors (0.4 mm × 0.4 mm × 0.2 mm each) with a pitch of 0.65 mm on flexible printed circuit boards. Pulse signals are measured and recorded simultaneously when traditional Chinese medicine practitioners wear the arrays on the fingers while palpating the radial pulse. Given that the pitches are much smaller than the diameter of the human radial artery, three-dimensional pulse envelope images can be measured with the system, as can the width and the dynamic width of the pulse signals. Furthermore, the array has an effective span of 11.6 mm—3–5 times the diameter of the radial artery—which enables easy and accurate positioning of the sensor array on the radial artery. This study also outlines proposed methods for measuring the pulse width and dynamic pulse width. The dynamic pulse widths of three volunteers were measured, and the dynamic pulse width measurements were consistent with those obtained by color Doppler ultrasound. The pulse wave velocity can also be measured with the system by measuring the pulse transit time between the pulse signals at the brachial and radial arteries using the finger-worn sensor arrays.

Three-dimensional Color Doppler Sonography and Uterine Artery Arteriography of Fibroids

2002 ◽  
Vol 21 (2) ◽  
pp. 129-133 ◽  
Author(s):  
C. Joseph Muniz ◽  
Arthur C. Fleischer ◽  
Edwin F. Donnelly ◽  
Murray J. Mazer
Keyword(s):  
Uterine Artery ◽  
Doppler Sonography ◽  
Color Doppler ◽  
Three Dimensional ◽  
Color Doppler Sonography

scholarly journals Three-Dimensional Reconstruction of the Color Doppler–Imaged Vena Contracta for Quantifying Aortic Regurgitation

Circulation ◽  
1999 ◽  
Vol 99 (12) ◽  
pp. 1611-1617 ◽  
Author(s):  
Yoshiki Mori ◽  
Takahiro Shiota ◽  
Michael Jones ◽  
Suthep Wanitkun ◽  
Timothy Irvine ◽  
...  
Keyword(s):  
Aortic Regurgitation ◽  
Color Doppler ◽  
Three Dimensional ◽  
Three Dimensional Reconstruction ◽  
Vena Contracta ◽  
Dimensional Reconstruction

Abstract TP136: Four-dimensionally Guided Three-dimensional Color-doppler Ultrasonography Quantifies Carotid Artery Stenoses With Equally High Reproducibility and Accuracy Compared to Catheter Angiography

Stroke ◽  
2016 ◽  
Vol 47 (suppl_1) ◽  
Author(s):  
Roland Richard Macharzina ◽  
Sascha Kocher ◽  
Steven R Messé ◽  
Fabian Hoffmann ◽  
Thomas Rutkowski ◽  
...  
Keyword(s):  
Carotid Artery ◽  
Doppler Ultrasonography ◽  
Binary Classification ◽  
Color Doppler ◽  
Pearson Correlation ◽  
Three Dimensional ◽  
Catheter Angiography ◽  
High Reproducibility ◽  
Stenosis Quantification ◽  
Stenosis Detection

Introduction: Clinical stratification in patients with ICAS largely depends on symptomatic status and stenosis grading. The purpose was to analyze the agreement and binary accuracy for the degree of internal carotid artery stenoses (ICAS) as determined by four-dimensional (4D) real-time guided three-dimensional color-Doppler (3DC) ultrasonography (4D/3DC-US) compared to catheter angiography (CA). Hypothesis: We hypothesized that 4D/3DC-US is non inferior to CA in grading ICAS in selected patients. Methods: Screening with 4D/3DC-US was performed in 93 patients (122 ICAS) admitted to our vascular center.Main exclusion criteria were insufficient image quality, previous revascularization and contraindications to CA. Eighty patients were prospectively examined in optimal planes with 4D-US assisted static 3DC-US color-Doppler (10MHz) followed by blinded multiplanar off-line rendering to determine %-NASCET stenosis. Multiplane selective CA of the same ICAS were quantified with dedicated software in a blinded fashion. Results: Quantitative CA of 103 stenoses with a mean degree of 65 ± 17% were compared to 4D/3DC-US resulting in a Pearson correlation coefficient of 0.89 and a standard deviation of differences (SDD) of 8.1% at a bias of +1.7%. Binary 50, 60 and 70%-stenosis detection with 3DC-US revealed an accuracy of 96, 89, 85%, a sensitivity of 97, 92, 87% and a specificity of 92, 83 and 84%. Interobserver SDD for CA of 52 stenoses (7.2%) did not differ from SDD between 3DC-US and CA (P = 0.274). Conclusions: 4D/3DC-US allowed good metric stenosis quantification and accurate binary classification with high reproducibility in a selected cohort.

scholarly journals Prenatal Sonographic Image of Sirenomelia with Anencephaly and Craniorachischisis Totalis

2018 ◽  
Vol 2018 ◽  
pp. 1-5
Author(s):  
Takako Sugiura ◽  
Yuka Sato ◽  
Naoyuki Nakanami ◽  
Kiyomi Tsukimori
Keyword(s):  
Ultrasound Examination ◽  
Color Doppler ◽  
Three Dimensional ◽  
Final Diagnosis ◽  
Color Doppler Ultrasound ◽  
Lower Limbs ◽  
Ultrasound Images ◽  
Two Dimensional ◽  
Prenatal Counselling ◽  
Medical Termination

Sirenomelia is a rare congenital malformation characterized by varying degrees of fusion of the lower extremities. It is commonly associated with severe urogenital and gastrointestinal malformations; however, the association of sirenomelia with anencephaly and rachischisis totalis is extremely rare. To our knowledge, the prenatal sonographic images of this association have not been previously published. Here, we present prenatal sonographic images of this association, detected during the 17th week of gestation through combined two-dimensional, four-dimensional, and color Doppler ultrasound. Two-dimensional ultrasound images showed anencephaly, spina bifida, and possible fusion of the lower limbs. Three-dimensional HDlive rendering images confirmed the final diagnosis of sirenomelia with anencephaly and rachischisis totalis. The patient opted to undergo medical termination of pregnancy and delivered a fetus with fused lower limbs, anencephaly, and rachischisis totalis confirming the in utero imaging findings. Awareness of these rare associations will help avoid misdiagnoses and facilitate prenatal counselling. This case highlights the importance of a thorough ultrasound examination.

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