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Journal Article
Research Support, U.S. Gov't, P.H.S.
Metabolic imaging of human extremity musculoskeletal tumors by PET.
Journal of Nuclear Medicine 1988 Februrary
The measurement of glucose utilization rate (GUR) by positron emission tomography (PET) using 18F-2-fluoro-2-deoxy-D-glucose (FDG) is a valuable method to assess the grade of malignancy of brain tumors. We have designed a feasibility trial to determine whether PET could be used to image and predict the grade of malignancy of human extremity musculoskeletal tumors. Five patients with extremity tumors (four soft-tissue tumors and one osteogenic tumor) were studied. Peak and mean apparent GURs were determined in the tumor region. All tumors were subsequently resected and graded in a standard fashion using the NCI grading system. Peak apparent GURs ranged from 3.3 mg/100 g/min to 15.2 mg/100 g/min, with the highest values found in the high grade tumors. Although the number of patients studied was small, a good correspondence was shown between GURs and histopathologic grading. Our results indicate that PET can be used to image and evaluate the metabolic activity of human musculoskeletal tumors.
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