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New scan could replace radioactive tracers for cancer detection

NCT ID NCT06630845

Diagnosis Sponsor: University of California, San Francisco Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study compares whole body diffusion-weighted MRI (DWI) to standard FDG PET/MRI scans in 30 adults with metastatic cancer. The goal is to see if DWI can spot cancer lesions as well as the PET scan, which uses a radioactive tracer. Participants will undergo both scans, and researchers will measure how many lesions each method finds and how consistent the readings are between doctors.

What this could mean

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

Active substance
Fluorodeoxyglucose F18 (FDG)
What this could lead to
If successful, this could show that whole body DWI is as effective as FDG PET for spotting cancer spread, potentially reducing the need for radioactive tracers in some scans.
What could go wrong
This is a small, early-phase study with only 30 participants, so results may not apply to all cancer types. The comparison is about imaging accuracy, not treatment outcomes.

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

About 30 people

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

Started

Feb 2025

Expected to finish

Oct 2029

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.

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: 1. Age ≥ 18 years. 2. Non FDG PET imaging study scheduled to be performed within 60 days (before or after) of the research PET/MRI. 3. Ability to understand a written informed consent document, and the willingness to sign it. 4. Diagnosis of metastatic cancer. Exclusion Criteria: 1. Unlikely to comply with protocol procedures, restrictions and requirements and judged by the Investigator to be unsuitable for participation. 2. Individuals with contraindications to MRI. This will be determined through review of the UCSF MRI screening form by qualified site personnel

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Conditions

The condition(s) this trial relates to.

metastatic malignant neoplasm Neoplasm Metastasis

As listed by the trial registrant

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

Metastatic cancer

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The study's own enquiry address

    This study publishes an address for enquiries. See it below .

  2. The places running it

    1 site. The list below names each one and where it is.

  3. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  4. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • University of California, San Francisco

    RECRUITING

    San Francisco, California, 94143, United States

    Contact Email: •••••@•••••

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