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New scan could spot hidden thyroid cancer better

NCT ID NCT05575440

Diagnosis Sponsor: Mayo Clinic 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Jul 30, 2026 · Updated 2 times

Summary

This study is testing a new type of PET/CT scan (18F-TFB) to see if it can find thyroid cancer that has come back or spread better than the current standard scan. About 24 adults with papillary or follicular thyroid cancer will get both scans to compare results. The goal is to improve how doctors detect and manage thyroid cancer.

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 24 people

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

Started

Apr 2022

Expected to finish

May 2028

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

Subjects have biopsy-proven papillary or follicular thyroid cancer and is clinically indicated for 123I-single-photon emission computerized tomography (I-SPECT)/CT total body iodine (TBI) scan

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: * Subject has biopsy-proven papillary or follicular thyroid cancer * Subject is clinically indicated for 123I-SPECT/CT total body iodine (TBI) scan * Subject agrees to undergo 18F-TFB PET/CT scan following TBI scan * Karnofsky performance status of \>= 50 (or Eastern Cooperative Oncology Group \[ECOG\]/World Health Organization \[WHO\] equivalent) * Subject is able to be scanned - able to lie still on SPECT/CT and PET/CT scanner table for up to 65 minutes (min) * Age 18 or older * Ability to understand a written informed consent document, and the willingness to sign it * Subject is not pregnant Exclusion Criteria: * Contrast-enhanced CT within 4 last weeks * Amiodarone within last 4 months * Ingested iodine, kelp tablets, Lugols iodine, or potassium iodide (SSKI) within 2 weeks * Unable to lie flat, still or tolerate a PET scan * Applied betadine, iodoform, or quick tanning products to skin within last two weeks * If using medication withdrawal for stimulation, then exclude if thyroid stimulating hormone (TSH) level \< 25 * Taken anti-thyroid medication within 1 week * Subject is breastfeeding * Positive pregnancy test

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Conditions

The condition(s) this trial relates to.

differentiated thyroid carcinoma Thyroid Cancer, Papillary thyroid gland follicular carcinoma thyroid gland papillary carcinoma

As listed by the trial registrant

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

Differentiated thyroid gland carcinoma Thyroid gland follicular carcinoma Thyroid gland papillary carcinoma

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

  • Mayo Clinic in Rochester

    RECRUITING

    Rochester, Minnesota, 55905, United States

    Contact Email: •••••@•••••

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