Related Experiment Video
Updated: Feb 2, 2026

Real-Time Void Spot Assay
Published on: February 10, 2023
Urology Mythbusters: should hydronephrosis grade be used to decide which newborns should undergo voiding
Michael P Kurtz1, Caleb P Nelson1
1Boston Children's Hospital and Harvard Medical School, Boston MA United States.
Abstract:
In this episode of Mythbusters the premise that among infants with prenatally identified urinary tract dilation (UTD), voiding cystourethrogram (VCUG) should be performed in those with higher grade UTD but not in those with lower grade UTD is critically examined. It is concluded that severity of dilation is not strongly associated with risk of vesicoureteral reflux or other anomalies diagnosed by VCUG. Therefore, using hydronephrosis grade to decide which infants with UTD should undergo VCUG is not evidence based.
More Related Videos
Related Concept Videos
Total Voids in Concrete
Graded Potential
Graded potentials fall into two categories: depolarizing and hyperpolarizing. Depolarizing graded potentials typically occur when sodium (Na+) or...
Urologic Endoscopic Procedure: Cystoscopic Examination
Design Example: Deciding Thickness of Lubricating Fluid in a Shaft
To calculate the required thickness of the lubricant layer, the tangential velocity at the shaft's surface must first be determined. This velocity is calculated by converting the rotational speed to angular velocity...
Types of Aggregate Grading
Well-graded aggregates include a complete range of necessary size fractions that fit together to create a dense matrix with minimal voids, represented by a smooth, continuous gradation curve. This type of grading ensures good...
Imaging Studies VI: Voiding Cystourethrography and Cystography

