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Ureteral Obstruction clinical trials

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NCT ID: NCT06412900 Not yet recruiting - Urolithiasis Clinical Trials

Radiomics and Image Segmentation of Urinary Stones by Artificial Intelligence

RISUS_AI
Start date: May 15, 2024
Phase:
Study type: Observational [Patient Registry]

Kidney stone disease causes significant morbidity, and stones obstructing the ureter can have serious consequences. Imaging diagnostics with computed tomography (CT) are crucial for diagnosis, treatment selection, and follow-up. Segmentation of CT images can provide objective data on stone burden and signs of obstruction. Artificial intelligence (AI) can automate such segmentation but can also be used for the diagnosis of stone disease and obstruction. In this project, the aim is to investigate if: Manual segmentation of CT scans can provide more accurate information about kidney stone disease compared to conventional interpretation. AI segmentation yields valid results compared to manual segmentation. AI can detect ureteral stones and obstruction or predict spontaneous passage.

NCT ID: NCT06110299 Not yet recruiting - Clinical trials for Ureteral Obstruction

Room Air a Safe Alternative to Dye Injection in Ureterography

Start date: October 29, 2023
Phase: N/A
Study type: Interventional

The procedure began in the Thirties .Retrograde pyelography is an essential step in most endoscopic procedure. This procedure is used as an investigation, with different indication in the past and the present, to delineate the ureter and pelvicalyceal system either before or after the operation, for example to detect any complication as a perforation and the need for stent placement. The procedure has an alternative, less invasive, the IVP. Multiple articles explored the use of air in the puncture of PCNL and to identify the posterior calyx, but to our knowledge there is no articles addressed the idea of air injection in the ureter. The greatest fear is air embolism or non-visualization of the ureter. The availability and cost of contrast material may be a problem, most urologist face

NCT ID: NCT05992363 Not yet recruiting - Renal Failure Clinical Trials

Tandem Polyurethane Stents Compared to Single Silicone Stent for Malignant Ureteral Obstruction

TSTENT
Start date: October 2023
Phase: Phase 3
Study type: Interventional

Malignant ureteral obstruction (MUO) is an extrinsic ureteral obstruction caused by malignant diseases. This study aim to compare tandem 6 Fr Percuflex™ stents and single large-caliber 8Fr silicone stent in patients with MUO. The primary endpoint is stent failure rate. The secondary endpoints are patient comfort, quality of life and overall survival.

NCT ID: NCT05265936 Not yet recruiting - Kidney Stone Clinical Trials

Is it Safe to Advance a Guidewire Through a Previously Placed Double j Stent?

Start date: March 2022
Phase: N/A
Study type: Interventional

In this prospective randomized controlled study, it is aimed to investigate the effects of guidewire advanced through a previously placed double j stent on postoperative complications, operation time and efficacy.