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FIG 2. Patient 3 with surgically treated acinic cell cancer of the parotid gland.
A, Rater 1. Contrast-enhanced neck CT scan shows a mass in the suboccipital subcutaneous fat (arrow) that was a suspected metastatic lymph node. Histology showed fat necrosis and chronic inflammation. ROIs are placed on the lesion (1) and on the masseter (3) and paraspinal (5) muscles.
B, Rater 2. CTP functional map shows relatively low blood flow of 24.9 mL/100 g/min in the lesion (arrow, ROI 1) and shows ROIs in the masseter (4) and paraspinal (8 and 9) muscles. Scale from red to blue corresponds to decreasing flow.
C, Rater 2. CTP functional map shows that the lesion (arrow, ROI 1) has a relatively long MTT of 10.5 seconds and shows ROIs in the masseter (4) and paraspinal (8 and 9) muscles. Scale from red to blue corresponds to increasing MTT.
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