Table 2:

Summary of Hounsfield units by phase and lesion type using 2 categories—recurrence and benign (includes both normal and diseased thyroid)

Phase/Group	No.	Mean	SD	Min	Max	P Value
Precontrast
Benign thyroid	58	98.55	19.79	54	138	<.001
Recurrence	29	37.09	17.91	10.8	93	<.001
Arterial
Benign thyroid	58	209.59	42.06	131	331	<.001
Recurrence	29	99.98	37.67	39.7	174	<.001
Venous
Benign thyroid	58	176.38	36.47	96	263	<.001
Recurrence	29	90.61	31.69	28.2	156	<.001
Delayed
Benign thyroid	58	158.19	31.19	94	238	<.001
Recurrence	29	87.83	28.6	24.2	155	<.001