Two-dimensional (2D), three-dimensional static (3D) and real-time (4D) contrast enhanced voiding urosonography (ceVUS) versus voiding cystourethrography (VCUG) in children with vesicoureteral reflux.

2016 ◽  
Vol 85 (6) ◽  
pp. 1238-1245 ◽  
Author(s):  
Magdalena Maria Woźniak ◽  
Andrzej Paweł Wieczorek ◽  
Agata Pawelec ◽  
Agnieszka Brodzisz ◽  
Maria Małgorzata Zajączkowska ◽  
...  
Keyword(s):  
Real Time ◽  
Vesicoureteral Reflux ◽  
Three Dimensional ◽  
Voiding Cystourethrography ◽  
Two Dimensional ◽  
Voiding Urosonography ◽  
Contrast Enhanced

Simultaneous voiding cystourethrography and voiding urosonography: Diagnostic comparison for vesicoureteral reflux

2003 ◽  
Vol 44 (3) ◽  
pp. 265-268
Author(s):  
M. Uhl ◽  
J. Kromeier ◽  
L.-B. Zimmerhackl ◽  
K. Darge
Keyword(s):  
Contrast Medium ◽  
Vesicoureteral Reflux ◽  
Contralateral Side ◽  
Voiding Cystourethrography ◽  
Voiding Urosonography ◽  
Predictive Values ◽  
Contrast Enhanced ◽  
Radiographic Contrast Medium ◽  
The Us ◽  
Radiographic Contrast

Purpose: To compare the diagnostic accuracy of contrast-enhanced voiding urosonography (VUS) and voiding cystourethrography (VCUG) during simultaneous performance of both examinations. Material and Methods: A total of 24 children, 16 girls and 8 boys, with a mean age of 3.5 years referred for reflux examination were recruited for the study. After transurethral bladder catheterization, radiographic contrast medium, followed directly by the US contrast medium, were administered. Fluoroscopic VCUG and VUS were carried out concurrently in the same patient. When 1 kidney was scanned by ultrasound, fluoroscopy was performed on the contralateral side. Results: In 19 of the 47 kidney-ureter-units (KUU) vesicoureteral reflux (VUR) was detected. In 16 units the reflux was detected by both VCUG and VUS. In 3 KUUs the reflux was detected only at VCUG. All 3 cases were grade 1. Taking the VCUG as the reference standard, VUS had 84% sensitivity, 100% specificity, 100% and 90% positive and negative predictive values, respectively. Conclusion: A dependable comparison could be achieved by performing VCUG and VUS at the same time and under the same conditions. It reconfirmed that VUS is reliable in the exclusion or verification of reflux.

CALCULATION OF THE DEPENDENCE OF THE DISTANCE TO THE LOCATED OBJECT FROM THE CORNER POSITION OF THE VEHICLE LINE

2018 ◽  
pp. 14-18
Author(s):  
V. V. Artyushenko ◽  
A. V. Nikulin
Keyword(s):  
Real Time ◽  
Statistical Physics ◽  
Angular Position ◽  
Three Dimensional ◽  
Line Of Sight ◽  
Two Dimensional ◽  
Radar Station ◽  
Flight Mode ◽  
Vector Algebra ◽  
Analytical Expressions

To simulate echoes from the earth’s surface in the low flight mode, it is necessary to reproduce reliably the delayed reflected sounding signal of the radar in real time. For this, it is necessary to be able to calculate accurately and quickly the dependence of the distance to the object being measured from the angular position of the line of sight of the radar station. Obviously, the simplest expressions for calculating the range can be obtained for a segment or a plane. In the text of the article, analytical expressions for the calculation of range for two-dimensional and three-dimensional cases are obtained. Methods of statistical physics, vector algebra, and the theory of the radar of extended objects were used. Since the calculation of the dependence of the range of the object to the target from the angular position of the line of sight is carried out on the analytical expressions found in the paper, the result obtained is accurate, and due to the relative simplicity of the expressions obtained, the calculation does not require much time.

Comparison of Real Time Two-Dimensional with Live/Real Time Three-Dimensional Transesophageal Echocardiography in the Evaluation of Mitral Valve Prolapse and Chordae Rupture

2008 ◽  
Vol 25 (10) ◽  
pp. 1131-1137 ◽  
Author(s):  
Jayaprakash Manda ◽  
Saritha Kumari Kesanolla ◽  
Ming Chon Hsuing ◽  
Navin C. Nanda ◽  
Elsayed Abo-Salem ◽  
...  
Keyword(s):  
Mitral Valve ◽  
Transesophageal Echocardiography ◽  
Real Time ◽  
Mitral Valve Prolapse ◽  
Three Dimensional ◽  
Two Dimensional
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