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CT 'Fingerprint' may predict kidney stone smash success in kids

NCT ID NCT07657832

Knowledge-focused Sponsor: Mansoura University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing This study
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looks at whether a measurement called the stone heterogeneity index (SHI), taken from a CT scan, can predict how well shock wave lithotripsy (SWL) breaks up upper urinary tract stones in children aged 1 to 18. Researchers will follow 286 children for three months after their last SWL session to see if SHI is linked to stone-free outcomes. They will also track any leftover stone fragments for one year to understand factors affecting regrowth or the need for further procedures.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

What this could lead to
If the stone heterogeneity index reliably predicts success, doctors could better select children for shock wave therapy, avoiding ineffective treatments.
What could go wrong
This is an observational study, not a treatment trial. The index may not prove accurate enough to change clinical practice, and results may not apply to all stone types.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Participants

About 286 people

The number the study aims to enrol. It can still change while the study runs.

Started

Mar 2025

Expected to finish

Aug 2026

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

The medical records of pediatric patients who underwent SWL at the Urologyy and Nephrology Center from January 2016 toDecember 2024 willl be retrospectively reviewed. Gender, age, history of SWL or stone surgery, and comorbidities will be recorded as patients' characteristics. Stone features on NCCT include the size, location, skin to stone distance (SSD), MSD, and SHI. Hounsfield unit (HU): Multiple regions of interest (ROI), incorporating the stone but not the surrounding soft tissue. This will be done creating single elliptical ROI, a squared 10 × 10-pixel map, or a freehand ROI drawn along the stone edge to take into account abnormal shapes. We will used 3 ROI within the image, either over-lapping or non-overlapping, and taking the mean of the three results or the peak HU. Stone heterogeneity index (SHI): SHI will be designated as the standard deviation of Hounsfield's units in the same specified region of interest.

Ages

1 year to 18 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Age between 1year and 18 years. * Both ureteric stone with size 5 mm-10 mm and renal stone with size 10 mm-20 mm. * Only those patients who had NCCT available for review after at least 3 months from the last session of SWL will be included in the study. Exclusion Criteria: * Patients \>18 years of age. * Subjects suffering from active urinary tract infection. * Multiple renal calculi. * Presence of anatomical renal abnormalities that may affect stone clearance and renal insufficiency.

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Conditions

The condition(s) this trial relates to.

urolithiasis

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Shock wave lithotripsy Stone heterogeneity index

Contacts and locations

Locations

  • Mansoura University

    Al Mansurah, Mansoura, Egypt

More trials for these conditions

Other studies related to the condition(s) this trial covers.