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GREENWATER 2.0: Reducing Iodinated Contrast Agents in Hospital Wastewater

NCT07620093 · Status: RECRUITING · Type: OBSERVATIONAL · Enrollment: 416

Last updated 2026-06-24

No results posted yet for this study

Summary

The goal of this observational study is to learn if using a dedicated urine collection device after CT scans can help reduce the amount of iodinated contrast agent released into hospital wastewater in adult outpatients undergoing contrast-enhanced CT scans.

The main questions it aims to answer are:

* Does the dedicated urine collection device improve patient acceptance and compliance with post-contrast urine collection?
* How much iodinated contrast agent can be recovered from urine collected after CT scans?

Participants will:

* Have their planned CT scan with iodinated contrast agent as part of their regular medical care.
* Wait in the radiology department for about 60 minutes after the contrast injection.
* Use a dedicated urine collection device before leaving the hospital.
* Answer short questions about their experience with the device.

This does not change the CT scan, the contrast agent used, or the standard clinical imaging procedure. The only additional procedure is the use of the dedicated urine collection device after the scan.

Conditions

  • Environmental Sustainability in Radiology
  • Iodinated Contrast Agent Recovery

Interventions

DEVICE

Dedicated Urine Collection Device (Toilet)

A dedicated urine collection device installed in the radiology department for use after contrast-enhanced CT scans. Participants will undergo their CT scan according to standard clinical practice, with no change to the imaging protocol, contrast agent selection, or contrast administration. After iodinated contrast injection, participants will be asked to wait approximately 60 minutes and then use the dedicated device before leaving the hospital. The collected urine will be used to assess the potential recovery of iodinated contrast agent residues and the feasibility of this workflow in routine radiology practice.

Sponsors & Collaborators

  • Bracco Imaging S.p.A.

    collaborator INDUSTRY

  • I.R.C.C.S Ospedale Galeazzi-Sant'Ambrogio

    lead OTHER

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2026-03-10
Primary Completion
2026-09-30
Completion
2026-12-31

Countries

  • Italy

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 NCT07620093 on ClinicalTrials.gov