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A Comparison of MRI Perfusion and FDG PET/CT to Distinguish Between Radiation Injury and Tumor Progression

Enhancing Brain Lesions After Radiation Therapy: A Comparison of MRI Perfusion and FDG PET/CT to Distinguish Between Radiation Injury and Tumor Progression

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01604512
Enrollment
148
Registered
2012-05-23
Start date
2012-05-31
Completion date
2023-12-29
Last updated
2025-04-08

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Brain Cancer

Keywords

Brain tumor, MRI Perfusion, FDG PET/CT, 12-067

Brief summary

This study will examine if MRI perfusion and PET/CT can tell growing tumor and radiation injury apart. MRI perfusion looks at the blood vessels in the tumor. PET/CT looks if the tumor cells are actively growing. The investigators will do these two tests and see which one is better. Patients will remain on study until the completion of either the MRI perfusion or PET/CT that are within 12 weeks of each other. After one of these scans, the patient will have no active interventions and will be off study. Optional: Restriction Spectrum Imaging (RSI) Sequence RSI sequence is an advanced way of looking at your brain. The scan allows doctors to see how water is moving within brain tumors or within brain cells. The extra sequence takes additional 4-5 minutes in the scanner. The RSI sequence is optional. The patient will only be asked to participate if the doctor believes that it will be helpful. Off study: Patients will remain on study until the completion of either the MRI perfusion or PET/CT that are within 12 weeks of each other. After one of these scans, the patient will have no active interventions and will be off study. Patients will obtain a standard of care brain MRI scan about every 2-3 months. These MRI scans will be used to track disease progression.

Interventions

DIAGNOSTIC_TESTMRI perfusion and PET/CT scans

The MRI perfusion and PET/CT scans will be obtained within 12 weeks of each other. These scans are part of the standard of care for patients with brain tumors and uncertain tumor response or progression after treatment. Although every effort will be made to perform both MRI perfusion and PET/CT on the same day or during the same week, some patients may experience longer intervals between scans due to scheduling conflicts. The disease in question (radiation injury vs. tumor progression) may change slightly during this interval (e.g., the lesion may grow or shrink slightly), but no large changes are expected between the two scans. The patients may continue existing treatments in the interval between scans (e.g., steroids, chemotherapy), but the two scans must be performed before any change or new treatment occurs. Fusion images of MRI and PET/CT will not be reviewed by the neuroradiologist interpreting the MRI perfusion nor the nuclear medicine radiologist interpreting the PET/CT.

Sponsors

Memorial Sloan Kettering Cancer Center
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
DIAGNOSTIC
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Pathological or clinical/radiological diagnosis of aneoplasm , either primary (e.g., malignant glioma) or secondary (metastasis from systemic malignancy) with a history of brain radiation therapy * Completed fractionated radiation therapy (to 60 Gy for high grade gliomas) or stereotactic radiosurgery or hypofractionated radiation therapy (e.g. for brain metastases, anaplastic meningiomas), without or with concurrent chemotherapy * New or increased enhancing brain lesion(s) OR nonenhancing brain lesion(s) if receiving anti-angiogenic therapy, which is considered indeterminate for tumor progression vs. radiation injury by the neuroradiologist or clinician * Patient and/or guardian is able to provide written informed consent prior to study registration * Age ≥ 18 years old

Exclusion criteria

* Claustrophobia * Known allergic reaction to Gd-DTPA * Any contraindication to gadolinium intravenous contrast as per standard Department of Radiology contrast guidelines * Any contraindication to MRI (e.g., pacemaker, aneurysm clip, tissue expander). * Pregnant or nursing female * Unable to cooperate for MRI and/or PET/CT

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants Who Received PET/CT and MRI Perfusion Studies2 yearsTo assess the utility of PET/CT and MRI perfusion studies in predicting whether worsening enhancing brain lesions seen after radiation therapy represent radiation injury or tumor progression. This study will examine the role of these two imaging techniques in predicting diagnosis and treatment planning.

Secondary

MeasureTime frameDescription
Median Time Between Radiation Therapy and Detection of Indeterminate Lesionup to 99 monthsMedian time between Radiation Therapy and detection of indeterminate lesion

Countries

United States

Participant flow

Participants by arm

ArmCount
Pts With a Brain Tumor
The study will prospectively enroll patients who have increasing size and/or enhancement of brain lesion(s) after brain radiation therapy for a neoplasm (either primary or metastatic), where. it is unclear if a lesion represents radiation injury or progressive tumor. At the discretion of PI the RSI sequence may be repeated at SOC FDG or other radiotracer imaging carried out while the patient is still on study, if deemed clinically necessary.
148
Total148

Withdrawals & dropouts

PeriodReasonFG000
Overall StudyNot treated4
Overall StudyWithdrawal by Subject3

Baseline characteristics

CharacteristicPts With a Brain Tumor
Age, Continuous56 years
Ethnicity (NIH/OMB)
Hispanic or Latino
5 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
74 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
69 Participants
Race (NIH/OMB)
American Indian or Alaska Native
1 Participants
Race (NIH/OMB)
Asian
8 Participants
Race (NIH/OMB)
Black or African American
8 Participants
Race (NIH/OMB)
More than one race
0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
7 Participants
Race (NIH/OMB)
White
124 Participants
Region of Enrollment
United States
148 Participants
Sex: Female, Male
Female
79 Participants
Sex: Female, Male
Male
69 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
18 / 148
other
Total, other adverse events
0 / 148
serious
Total, serious adverse events
6 / 148

Outcome results

Primary

Number of Participants Who Received PET/CT and MRI Perfusion Studies

To assess the utility of PET/CT and MRI perfusion studies in predicting whether worsening enhancing brain lesions seen after radiation therapy represent radiation injury or tumor progression. This study will examine the role of these two imaging techniques in predicting diagnosis and treatment planning.

Time frame: 2 years

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
Pts With a Brain TumorNumber of Participants Who Received PET/CT and MRI Perfusion StudiesParticipants who received PET/CT and MRI perfusion studies53 Participants
Pts With a Brain TumorNumber of Participants Who Received PET/CT and MRI Perfusion StudiesParticipants who did not receive PET/CT and MRI perfusion studies95 Participants
Secondary

Median Time Between Radiation Therapy and Detection of Indeterminate Lesion

Median time between Radiation Therapy and detection of indeterminate lesion

Time frame: up to 99 months

ArmMeasureValue (MEDIAN)
Pts With a Brain TumorMedian Time Between Radiation Therapy and Detection of Indeterminate Lesion9 months

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026