PET and CT Scans to Evaluate Patients With Stage III or Stage IV Melanoma
Summary
RATIONALE: Diagnostic procedures may improve the ability to detect metastatic melanoma and to determine the extent of disease.
PURPOSE: Phase II trial to evaluate the effectiveness of PET and CT scans to detect metastatic disease in patients who have stage III or stage IV melanoma.
Description
OBJECTIVES: I. Evaluate the sensitivity, specificity, and accuracy of fludeoxyglucose F 18 (FDG) positron emission tomography (PET) imaging in detecting metastatic disease in patients with stage III or IV melanoma considered for operative management based on the currently accepted diagnostic work up including CT imaging. II. Determine how often the clinical management of these patients is altered based on FDG PET imaging findings in addition to CT scan results.
OUTLINE: Patients are required to fast for a minimum of 6 hours prior to positron emission tomography (PET) imaging. Fludeoxyglucose F 18 (FDG) is administered IV over 15 minutes followed 50-60 minutes later by whole body PET imaging. Iodinated contrast dye is administered by IV injection and by mouth followed by CT imaging of the chest, abdomen, and pelvis within 2 weeks of PET imaging. Whole body FDG PET imaging and CT imaging of the chest, abdomen, and pelvis are repeated at 6 months. Initial positive PET or CT imaging results are verified based on surgical and/or biopsy findings or clinical follow-up.
PROJECTED ACCRUAL: A total of 100 patients will be accrued for this study within 2.5 years.
Study Design
Primary Purpose: Diagnostic
Conditions
Melanoma (Skin)
Intervention
iodinated contrast dye, computed tomography, positron emission tomography, fludeoxyglucose F 18
Location
Memorial Sloan-Kettering Cancer Center
New York
New York
United States
10021
Status
Completed
Source
National Cancer Institute (NCI)
Results (where available)
Links
- Source: http://clinicaltrials.gov/show/NCT00004152
- Information obtained from ClinicalTrials.gov on July 15, 2010
Published on BioPortfolio: 2014-08-27T03:58:21-0400
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Medical and Biotech [MESH] Definitions
Positron-emission Tomography
An imaging technique using compounds labelled with short-lived positron-emitting radionuclides (such as carbon-11, nitrogen-13, oxygen-15 and fluorine-18) to measure cell metabolism. It has been useful in study of soft tissues such as CANCER; CARDIOVASCULAR SYSTEM; and brain. SINGLE-PHOTON EMISSION-COMPUTED TOMOGRAPHY is closely related to positron emission tomography, but uses isotopes with longer half-lives and resolution is lower.
Positron Emission Tomography Computed Tomography
An imaging technique that combines a POSITRON-EMISSION TOMOGRAPHY (PET) scanner and a CT X RAY scanner. This establishes a precise anatomic localization in the same session.
Single Photon Emission Computed Tomography Computed Tomography
An imaging technique using a device which combines TOMOGRAPHY, EMISSION-COMPUTED, SINGLE-PHOTON and TOMOGRAPHY, X-RAY COMPUTED in the same session.
Tomography, Emission-computed, Single-photon
A method of computed tomography that uses radionuclides which emit a single photon of a given energy. The camera is rotated 180 or 360 degrees around the patient to capture images at multiple positions along the arc. The computer is then used to reconstruct the transaxial, sagittal, and coronal images from the 3-dimensional distribution of radionuclides in the organ. The advantages of SPECT are that it can be used to observe biochemical and physiological processes as well as size and volume of the organ. The disadvantage is that, unlike positron-emission tomography where the positron-electron annihilation results in the emission of 2 photons at 180 degrees from each other, SPECT requires physical collimation to line up the photons, which results in the loss of many available photons and hence degrades the image.
Tomography, Spiral Computed
Computed tomography where there is continuous X-ray exposure to the patient while being transported in a spiral or helical pattern through the beam of irradiation. This provides improved three-dimensional contrast and spatial resolution compared to conventional computed tomography, where data is obtained and computed from individual sequential exposures.
