Ureteral Dilation
Ureteral Dilation - Related Videos
14:05
A Murine Model of Irreversible and Reversible Unilateral Ureteric Obstruction
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Cited by 47 •
2014
The murine model of irreversible unilateral ureteric obstruction (UUO) is presented together with the model of reversible UUO in which the ureteric obstruction is relieved by anastomosis of the severed ureter into the bladder. These models enable the study of renal inflammation and scarring as well as tissue remodeling.
01:30
Cardiomyopathy II: Dilated Cardiomyopathy
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2025
Dilated cardiomyopathy, or DCM, is a progressive myocardial disorder characterized by ventricular chamber dilation and contractile dysfunction.EtiologyVarious factors can cause DCM, including hypertension and heavy alcohol intake, which contribute to the weakening and enlargement of the heart muscle. Viral infections, such as Coxsackievirus B, adenoviruses, and influenza, can lead to DCM by causing inflammation and damage to heart tissue. Certain chemotherapeutic agents, including daunorubicin,...
02:19
Unilateral Ureteral Obstruction Murine Model: A Surgical Procedure to Obstruct the Urinary Flow from a Kidney in Mouse Models
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2023
This video demonstrates the procedure to generate a unilateral ureteral obstruction mouse model. The procedure involves cutting one of the ureters of the mouse to obstruct urine flow.
06:35
Ultrasound Assessment of Endothelial Function: A Technical Guideline of the Flow-mediated Dilation Test
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Cited by 56 •
2016
The flow mediated dilation (FMD) test is the most commonly utilized, non-invasive, ultrasound assessment of endothelial function in humans. Although the FMD test has been related with the prediction of future cardiovascular disease and events, it is a physiological assessment with many inherent confounding factors that need to be considered.
07:45
Quantifying Intermembrane Distances with Serial Image Dilations
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Cited by 12 •
2018
The purpose of this algorithm is to continuously measure the distance between two 2-dimensional edges using serial image dilations and pathfinding. This algorithm can be applied to a variety of fields such as cardiac structural biology, vascular biology, and civil engineering.
FAQs
When urine cannot pass normally through the ureter, fluid accumulates upstream of the impaired segment. This increases pressure within the ureter and may transmit pressure toward the kidney. The degree of concern therefore depends not only on the visible widening, but also on whether disrupted drainage is affecting the upper urinary tract and kidney function.
A stone, narrowed ureter, mass, or functional blockage can interfere with urine passage. These causes represent different types of drainage problems, so identifying the specific source is important for choosing management. Imaging helps clinicians determine where the flow is disrupted and whether treatment should target an underlying lesion or restore drainage temporarily.
The ureter is part of the urine drainage pathway from the kidney to the bladder. If flow remains impaired, pressure can extend upstream toward the kidney rather than remaining confined to the widened ureter. For this reason, clinical evaluation considers both the site of dilation and its possible effect on kidney function.
Ultrasound, computed tomography, and other imaging methods can demonstrate the widened ureter and help identify the location of impaired drainage. The selected study provides anatomical information that supports evaluation of stones, narrowing, masses, or other causes. Imaging findings are then interpreted in relation to the possible effect on the kidney.
Detection is only the first step. Clinicians seek to determine whether one or both ureters are involved, where urine flow is impeded, what condition is responsible, and whether kidney function may be affected. This information connects the imaging finding to a management plan rather than treating the dilation as an isolated abnormality.
A stent or catheter may be used to temporarily restore urine drainage when the underlying problem has not yet been corrected or when immediate decompression is needed. This approach addresses the flow disturbance rather than necessarily removing its cause. Definitive management may instead focus on the stone, narrowing, mass, or functional blockage responsible for the obstruction.