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FIG 4. Patient 13 with recurrent laryngeal squamous cell cancer previously treated with radiation.
A, Contrast-enhanced neck CT scan shows thickening and diffuse enhancement of supralaryngeal structures. ROIs 1 and 2 are placed bilaterally in the abnormality. Both sampled sites were positive for recurrence on histology. ROI 4 is in the left sternocleidomastoid muscle.
B, CTP functional map reveals areas of increased perfusion with blood flows of 67 and 77 mL/100 g/min. Scale from red to blue corresponds to decreasing flow.
C, CTP functional map shows short MTTs of 2.5 and 3.4 seconds in the abnormality. Scale from red to blue corresponds to decreasing MTT.
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