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3D-CT vs Ellipsoid for JJ Stent Prediction Before ESWL

NCT07337954 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 56

Last updated 2026-01-13

No results posted yet for this study

Summary

This prospective single-center study compares 3D-CT volumetry versus traditional ellipsoid formula to determine critical stone burden predicting JJ stent necessity before ESWL for 1-2 cm renal stones. Fifty-six patients with single radio-opaque renal stones will receive up to two ESWL sessions using Dornier lithotripter without initial stenting. Stone characteristics will be assessed via NCCT: linear dimensions (ellipsoid formula), 3D volume (voxel-based segmentation), Hounsfield units, and skin-to-stone distance. Patients will be stratified by ESWL outcomes to compare volume measurements between clearance success and stent-requiring groups..

Conditions

  • Urolithiasis
  • Shock Wave Lithotripsy
  • Ureteral Stents

Interventions

DEVICE

Extracorporeal shock wave lithotripter

ESWL delivered at 70-80 shocks/min, max 2500 shocks/session, voltage ramped to 90 kV. Stone localization via fluoroscopy.

Sponsors & Collaborators

  • Ain Shams University

    lead OTHER

Study Design

Allocation
NA
Purpose
DIAGNOSTIC
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Max Age
65 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2024-01-01
Primary Completion
2024-06-30
Completion
2024-06-30

Countries

  • Egypt

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07337954 on ClinicalTrials.gov