The Role of 18F-FDG PET in Staging and Early Prediction of Response to Therapy of Recurrent Gastrointestinal Stromal Tumors
Isis Gayed, MD1,
Thuan Vu, MD2,
Revathy Iyer, MD2,
Marcella Johnson, MS3,
Homer Macapinlac, MD1,
Nancy Swanston1 and
Donald Podoloff, MD1
1 Department of Nuclear Medicine, M.D. Anderson Cancer Center, University of Texas, Houston, Texas
2 Department of Diagnostic Radiology, M.D. Anderson Cancer Center, University of Texas, Houston, Texas
3 Department of Biostatistics, M.D. Anderson Cancer Center, University of Texas, Houston, Texas

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FIGURE 1. 18F-FDG PET and CT scans of patient with metastatic GIST in abdomen and liver before therapy (A and B); at 12 mo of imatinib mesylate therapy (C and D); and at 13 mo after withdrawal of imatinib mesylate for 1 mo (E and F). Maximum SUV of abdominal mass changed from 10.1 (A) to 1.3 (C) to 4.5 (E), and tumor size in longest dimension changed from 10.9 cm (B) to 11.3 cm (D) to 11.5 cm (F).
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Copyright © 2004 by the Society of Nuclear Medicine.