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CHAPTER 6 Diagnostic Imaging in Oncology 119
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• Fig. 6.10 A transverse Short-T1 Inversion Recovery (STIR) image (A) and T1 postcontrast image with fat
suppression (B) shows the delineation of a peripheral nerve sheath tumor.
• Fig. 6.11 Bone phase scintigraphy of the pelvic limbs (top images), thoracic limbs and head (middle
images), and thorax (bottom images) show multifocal areas of increased radiopharmaceutical uptake (hot
spots) in the ribs and scapula, consistent with bone metastasis (arrows). The primary bone tumor is in the
proximal tibia (arrowhead).
However, F-18 FDG is the most commonly used PET radiophar- ultrasound; and, because of the metabolic component, can detect
maceutical in human and veterinary medicine for detecting and metastatic lesions before they would be detected with routine
staging cancer and evaluating response to treatment. Performing imaging, including CT alone (Fig. 6.13).
whole-body PET/CT provides additional information compared Other PET agents have been investigated in veterinary medi-
with traditional staging with thoracic radiographs and abdominal cine. Labeling F-18 with sodium fluoride (NaF) results in a
