Comparison of Imaging Characteristics of uEXPLORER and Conventional PET/CT in Patients With Lung Cancer, Lymphoma, and Melanoma
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ClinicalTrials.gov Identifier: NCT04478318 |
Recruitment Status :
Enrolling by invitation
First Posted : July 20, 2020
Last Update Posted : January 9, 2023
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Condition or disease | Intervention/treatment | Phase |
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Lung Neoplasm Lymphoma Melanoma Fluorodeoxyglucose Positron-emission Tomography | Device: uEXPLORER/mCT Device: mCT/uEXPLORER | Not Applicable |
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 180 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | None (Open Label) |
Primary Purpose: | Basic Science |
Official Title: | Quantitative Comparison of Imaging Characteristics of uEXPLORER and Conventional PET/CT in Patients With Lung Cancer, Lymphoma, and Melanoma Undergoing Standard-of-Care FDG-PET/CT for Initial Staging |
Actual Study Start Date : | June 1, 2020 |
Estimated Primary Completion Date : | June 1, 2025 |
Estimated Study Completion Date : | June 1, 2025 |

Arm | Intervention/treatment |
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Experimental: uEXPLORER/mCT
Each patient will undergo a scan on a total-body PET/CT scanner (uEXPLORER) and then undergo an additional scan on a conventional PET/CT scanner (mCT). The first scan will take place 60 minutes after injection with 18F-FDG and the second scan will be 90 minutes after injection with 18F-FDG.
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Device: uEXPLORER/mCT
Participants will undergo a total-body PET/CT scan with the uEXPLORER scanner first, followed by a PET/CT scan with the conventional mCT PET/CT scanner. |
Experimental: mCT/uEXPLORER
Each patient will undergo a scan on a conventional PET/CT scanner (mCT) and then undergo an additional scan on a total-body PET/CT scanner (uEXPLORER) . The first scan will take place 60 minutes after injection with 18F-FDG and the second scan will be 90 minutes after injection with 18F-FDG.
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Device: mCT/uEXPLORER
Participants will undergo a PET/CT scan with the conventional mCT PET/CT scanner, followed by a total-body PET/CT scan with the uEXPLORER scanner |
- Minimum scan duration on a total-body PET/CT scanner for quality [ Time Frame: One imaging visit up to two hours ]To determine the minimum scan duration for 18F-FDG PET/CT scans performed on a total-body PET/CT scanner that results in non-inferior image quality to 18F-FDG PET/CT scans performed on a conventional PET/CT scanner over 20 minutes.
- Minimum scan duration on a total-body PET/CT scanner for tumor recognition [ Time Frame: One imaging visit up to two hours ]To determine the minimum scan duration for 18F-FDG PET/CT scans performed on a total-body PET/CT scanner that results in non-inferior tumor conspicuity to 18F-FDG PET/CT scans performed on a conventional PET/CT scanner over 20 minutes (with an additional 2 minutes of data used for optimization purposes).

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Ages Eligible for Study: | 18 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Ability to understand and willingness to sign an informed consent form.
- Ability to adhere to the study visit schedule and all protocol requirements.
- Men and women ≥18 years of age.
- Diagnosis or suspected diagnosis of lung cancer, melanoma or lymphoma.
- Patients who have been referred for a PET/CT scan.
Exclusion Criteria:
- Pregnant women.
- Claustrophobia.
- Any significant medical condition that in the opinion of the investigator would prevent the subject from participating and/or adhering to study related procedures or interfere with subject safety.

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT04478318
United States, California | |
University of California Davis | |
Sacramento, California, United States, 95817 |
Principal Investigator: | Lorenzo Nardo, MD | UC Davis Department of Radiology |
Responsible Party: | University of California, Davis |
ClinicalTrials.gov Identifier: | NCT04478318 |
Other Study ID Numbers: |
1506448 CCRD039 ( Other Identifier: UC Davis Cancer Center ) |
First Posted: | July 20, 2020 Key Record Dates |
Last Update Posted: | January 9, 2023 |
Last Verified: | January 2023 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
Studies a U.S. FDA-regulated Drug Product: | No |
Studies a U.S. FDA-regulated Device Product: | No |
Product Manufactured in and Exported from the U.S.: | No |
Lymphoma Melanoma Lung Neoplasms Neoplasms by Histologic Type Neoplasms Lymphoproliferative Disorders Lymphatic Diseases Immunoproliferative Disorders Immune System Diseases Neuroendocrine Tumors |
Neuroectodermal Tumors Neoplasms, Germ Cell and Embryonal Neoplasms, Nerve Tissue Nevi and Melanomas Respiratory Tract Neoplasms Thoracic Neoplasms Neoplasms by Site Lung Diseases Respiratory Tract Diseases |