TABLE 3:

Perfusion CT parameters of different structures and lesions

ROI	Perfusion Parameters
	Blood Flow (mL/100g/min)	Blood volume (mL/100g)	MTT (sec)	CP (mL/100g/min)
Muscles of mastication	14.7 ± 14.4*	1.5 ± 0.4*	16.1 ± 8.8*	9.0 ± 4.7*
Paraspinous muscles	4.7 ± 2.7*	1.1 ± 0.6*	20.8 ± 6.9*	6.5 ± 5.3*
Sternocleidomastoid muscle	16.4 ± 10.1*	1.4 ± 0.7‡	10.6 ± 5.1*	5.4 ± 4.0*
Thyroid gland	154.5 ± 41.8	14.0 ± 2.0*	6.3 ± 0.6*	29.7 ± 8.8
Salivary glands†	51.7 ± 39.7	4.2 ± 1.9	8.2 ± 4.1‡	37.9 ± 12.6‡
Malignant lesions	94.9 ± 47.9	4.4 ± 2.2	3.3 ± 0.9	23.2 ± 4.6
Benigh lesions	38.5 ± 16.8‡	3.8 ± 1.2	11.8 ± 4.5*	24.3 ± 9.2

Note.—Data are the mean ± standard deviation. CP = capillary permeability surface product.

^*P < .001, malignant lesions vs other structures.

^†Parotid and submandibular glands.

^‡P < .05, malignant lesions vs other structures.