Fig 1.

Patient 8 with atypical vascular proliferation of the vocal cord.

A, Contrast-enhanced neck CT scan shows a mass in the left true vocal cord. ROIs 9 and 11–13 are in the lesion, and ROI 10 is in the contralateral vocal cord.

B, CTP functional map shows a relatively low blood flow of 26–32 mL/100 g/min in the lesion in the left vocal cord. Right vocal cord has blood flow of 26 mL/100 g/min. Scale from red to blue corresponds to decreasing flow.

C, CTP functional map shows that the lesion has a relatively long MTT of 6.9–11.6 seconds. Scale from red to blue corresponds to increasing MTT.