Could MRI replace CT for sharper cancer radiation planning?

NCT ID NCT04545957

What the study statuses mean

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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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jul 20, 2026 · Last updated Jul 21, 2026 · Updated 1 time

Summary

This study investigates whether using magnetic resonance imaging (MRI) instead of standard CT scans to plan radiation therapy can improve treatment accuracy and reduce side effects. It enrolls adults with prostate, liver, or head and neck cancers who need radiation. Researchers will assess how often MRI-based planning is feasible and whether it leads to better quality of life and disease control.

What this could mean

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

Active substance
MRI simulator and radiation therapy
What this could lead to
If successful, this approach could make radiation therapy more precise, potentially reducing side effects and improving quality of life for people with certain cancers.
What could go wrong
This is an early-phase feasibility study, so it is not designed to prove effectiveness. The benefits seen may not apply to all patients or cancer types.

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 86 people

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

Started

Oct 2020

Expected to finish

Oct 2030

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: * Participants must have a confirmed malignancy requiring radiation therapy. * Age: 18 years or older * ECOG performance status ≤2 (Karnofsky ≥60%, see Appendix A) * Ability to understand and the willingness to sign a written informed consent document. * Disease-specific eligibility criteria will be specified in the appropriate subprotocol. Exclusion Criteria: * For MRI involving contrast, history of allergic reactions attributed to gadolinium based IV contrast. Note: If patient will not receive contrast, this is not applicable * Participants who cannot undergo an MRI * Disease-specific exclusion criteria will be specified in the appropriate subprotocol

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

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

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

  • Brigham and Women Hospital

    RECRUITING

    Boston, Massachusetts, 02115, United States

  • Dana Farber Cancer Institute

    RECRUITING

    Boston, Massachusetts, 02215, United States

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