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Brain scan showdown: which test best spots Alzheimer's?

NCT ID NCT06618872

Diagnosis Sponsor: University Hospital, Geneva 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 27, 2026

Summary

This study looks at whether a newer type of brain scan (Tau-PET) helps doctors diagnose Alzheimer's disease more accurately than the standard scan (Amyloid-PET). About 120 adults aged 50-85 with mild memory or thinking problems will get both scans. Researchers will track how often the scans change the doctor's diagnosis and confidence over time.

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 120 people

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

Started

Dec 2024

Expected to finish

Aug 2027

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

50 to 85 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: * Written Inform Consent to participating. * 50 to 85 years of age * a diagnosis of Mild Cognitive Impairment (MCI=at least one pathological neuropsychological test but no functional impairment based on the Amsterdam IADL score) or mild dementia (both cognitive and functional impairments) * availability of MRI within 6 months before screening * prescription of a diagnostic amyloid PET * Willing and able to comply with the requirements of the study, as judged by the investigator. Exclusion Criteria: * The presence of psychiatric disorders, extensive white matter lesions or other stigmata of vascular dementia. * Visual and auditory acuity inadequate for neuropsychological testing. * Enrolment in previous clinical trials for AD potentially affecting amyloid and/or tau brain load * Enrolment in other trials or studies not compatible with \[18F\]RO948 Imaging study. * Ferromagnetic implants and devices (including implants or devices held in place by sutures, granulation or ingrowth of tissue, fixation devices, or by other means) not eligible for MRI scanning. * Women of childbearing potential must not be pregnant (negative urine β-hCG on the day of imaging) or breast feeding at screening

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Conditions

The condition(s) this trial relates to.

Alzheimer disease dementia Pick disease

As listed by the trial registrant

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

Alzheimer disease Dementia

How to take part

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

  1. The places running it

    2 sites. The list below names each one and where it is.

  2. 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 ↗

  3. 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

  • Centre Medical Universitaire Vaudois

    RECRUITING

    Lausanne, Canton of Vaud, 1211, Switzerland

  • Geneva University Hospital

    RECRUITING

    Geneva, Canton of Geneva, 1205, Switzerland

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