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Cutting radiation in CT scans: a new test of Ultra-Low-Dose imaging

NCT ID NCT05840003

Diagnosis Sponsor: Centre Hospitalier Universitaire de Nīmes 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
Running, but no longer taking on new participants.
Completed This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Aug 14, 2026 · Last updated Aug 14, 2026

Summary

This trial tests whether an ultra-low-dose CT scan, using a new image reconstruction algorithm, can produce images good enough for diagnosing lung, abdominal-pelvic, and bone lesions, compared to a standard-dose CT scan. About 116 adults will receive both scans as part of their usual care. The goal is to see if the ultra-low-dose images are of sufficient quality to be used routinely, potentially reducing radiation exposure without compromising diagnostic accuracy.

What this could mean

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

Active substance
Ultra-Low-Dose thoraco-abdominopelvic computed tomography (CT) scan using the Precise Image reconstruction algorithm
What this could lead to
If ultra-low-dose CT scans prove as good as standard scans, patients could undergo imaging with far less radiation exposure, reducing long-term risks.
What could go wrong
The trial is relatively small and early, and image quality may not be sufficient for all diagnoses. There is also a risk that the ultra-low-dose scans miss subtle lesions.

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.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

116 people

The number who actually took part.

Started

Sep 2023

Finished

Sep 2024

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.

Ages

18 years and older

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: * Patient having given free and informed consent. * Patient who has signed the consent form. * Patient affiliated to or beneficiary of a health insurance plan. * Patient with a BMI \< 35 kg/m2 Exclusion Criteria: * Patient participating in research involving human subjects defined as Category 1. * Patient in an exclusion period as determined by another study. * Patient under court protection, guardianship or trusteeship. * Patient unable to give consent. * Patient for whom it is impossible to give informed information. * Pregnant patient. * Patient with a BMI ≥ 35 kg/m2

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Conditions

The condition(s) this trial relates to.

bone disorder disease lung disorder

As listed by the trial registrant

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

Abdomen disease Bone diseases Imaging, diagnostic Lung diseases Pelvis disease

Contacts and locations

Locations

  • CHU

    Nîmes, 30029, France

More trials for these conditions

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