Table 3.

Contrast index (CI) curve types among various histopathological diagnosis

Histopathological diagnosis	CI curve type
	A	B	C	D	E
Benign
Ameloblastoma (n = 16)	11	1	4	0	0
Odontogenic myxoma (n = 4)	0	0	0	0	4
Adenomatoid odontogenic tumour (n = 3)	0	2	0	0	1
Odontogenic fibroma (n = 2)	0	0	0	2	0
Malignant
Ameloblastic carcinoma (n = 1)	0	1	0	0	0
Primary intraosseous squamous cell carcinoma (n = 1)	1	0	0	0	0

CI₃₀₀, the CI observed at 300 s after contrast medium injection; CI_peak, maximum contrast index (CI_max) × 0.90; T_max, the time when CI_max occurred; T_peak, the time when CI_peak occurred Type A: CI_peak > 2.0, T_peak < 200 s; Type B: CI_peak < 2.0, T_peak > 200 s; Type C: CI₃₀₀ > 2.0, T_max < 600 s; Type D: CI₃₀₀ > 2.0, T_max > 600 s and Type E: CI₃₀₀ < 2.0, T_max > 600 s.