Table 1.

Dual‐input computed tomography perfusion parameters measured in patients with lung cancer

	Perfusion parameters
	Pulmonary flow (mL/min/100 mL)	Bronchial flow (mL/min/100 mL)	Pulmonary index (%)
Masses (n = 37)
Observer 1, first	45.07 ± 27.39	83.73 ± 31.69	35.34 ± 12.20
Observer 2	49.34 ± 35.29	84.69 ± 33.78	35.58 ± 12.00
Observer 1, second	46.65 ± 30.49	82.89 ± 33.77	36.11 ± 12.79
Nodules (n = 51)
Observer 1, first	60.80 ± 37.27	68.98 ± 38.36	48.58 ± 21.31
Observer 2	63.00 ± 33.96	67.22 ± 41.85	50.91 ± 21.58
Observer 1, second	61.33 ± 37.69	67.88 ± 39.95	49.39 ± 21.36
Tumors without inner‐air density (n = 68)
Observer 1, first	51.10 ± 32.55	78.80 ± 36.26	40.47 ± 17.50
Observer 2	54.83 ± 35.07	79.61 ± 38.46	41.55 ± 17.92
Observer 1, second	52.11 ± 34.11	78.56 ± 38.03	41.17 ± 17.87
Tumors with inner‐air density (n = 20)
Observer 1, first	61.70 ± 35.00	60.61 ± 34.94	52.16 ± 22.51
Observer 2	63.07 ± 33.60	56.81 ± 38.83	54.21 ± 22.30
Observer 1, second	66.90 ± 38.40	57.45 ± 35.65	54.53 ± 22.08