- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02822365
Pocket Phantom Tool in Improving Accuracy of Quantitative PET/CT Imaging of Patients With Solid Tumors
Calibrated Methods for Quantitative PET/CT Imaging Phase II
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
PRIMARY OBJECTIVES:
I. Optimize the pocket phantom source design and the bias estimation algorithm: determine the tolerances and variations in the source sphere geometry and radioactive filing process; evaluate the need for higher-activity sources in the presence of increased attenuation (i.e. thicker patients); optimize CT contrast levels for source boundary detection and localization from CT images; evaluate the robustness for use with different scanner parameters (e.g. CT slice thicknesses); modify bias estimation algorithm as needed to take into account changes.
II. Develop automated and robust ID pocket phantom processing and web-based software as a service (SAS) analysis tools: automate initial identification of approximate location of the pocket phantom; add automated DICOM analysis for web-based SAS analysis tools for imaging sites.
III. Conduct phantom studies at multiple imaging centers to evaluate the performance with different imaging protocols, scanners, and reconstruction methods. Also test at multiple time points over 6-9 months to assess longitudinal stability.
IV. Conduct a comparative study with patients (at University of Washington [UW]) at multiple time points over 6-12 months to evaluate the performance of the pocket phantom in oncology patient imaging compared with current clinical practice.
OUTLINE:
Patients undergo a PET/CT scan as part of their standard clinical care. While still positioned for the clinical scan, patients undergo additional research PET/CT scans in a smaller region over 10 minutes with the pocket phantom placed nearby and a low-dose single bed position CT scan for attenuation correction (CTAC).
Study Type
Enrollment (Actual)
Contacts and Locations
Study Locations
-
-
Washington
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Seattle, Washington, United States, 98109
- Fred Hutch/University of Washington Cancer Consortium
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusion Criteria:
- Patient receiving clinically indicated PET/CT scan
- Patient has a known solid tumor
- Patient provides consent
- Patient can tolerate additional time in scanner (i.e. not claustrophobic)
Exclusion Criteria:
- Patient is pregnant
- Patient cannot or does not provide consent
Study Plan
How is the study designed?
Design Details
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
---|---|
Diagnostic (PET/CT)
Patients undergo a PET/CT scan as part of their standard clinical care.
While still positioned for the clinical scan, patients undergo additional research PET/CT scans in a smaller region over 10 minutes with the pocket phantom placed nearby and a low-dose single bed position CTAC.
|
Undergo PET/CT scan as clinically indicated (Note: CT is for attenuation correction and not for diagnostic purposes).
Other Names:
Undergo limited field of view PET scan with the Pocket Phantom placed nearby to assist in scanner calibration.
No additional PET tracer will be used.
Other Names:
Undergo PET/CT scan as clinically indicated.
Other Names:
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Difference in measured versus known quantitative values of the pocket phantom
Time Frame: At day 1 (All data will be collected during the clinically scheduled appointment. Analysis will follow typical image reconstruction times.)
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Compare measured activity of the pocket phantom (as measured by a PET/CT scanner) to the known values of the pocket phantom (as calculated based on half-life activity of known source) to determine accuracy and precision of scanner calibration.
This will be used to validate quantitative clinical measurements, like SUV (standardized uptake values), of known solid tumors.
|
At day 1 (All data will be collected during the clinically scheduled appointment. Analysis will follow typical image reconstruction times.)
|
Collaborators and Investigators
Sponsor
Collaborators
Investigators
- Principal Investigator: Paul Kinahan, Fred Hutch/University of Washington Cancer Consortium
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Other Study ID Numbers
- 9592 (Other Identifier: Fred Hutch/University of Washington Cancer Consortium)
- P30CA015704 (U.S. NIH Grant/Contract)
- NCI-2016-00747 (Registry Identifier: CTRP (Clinical Trial Reporting Program))
- R42CA167907 (U.S. NIH Grant/Contract)
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