Iodized oil uptake assessment with cone-beam CT in chemoembolization of small hepatocellular carcinomas

Table 1 Degree of iodized oil uptake by the tumors

Degree	Spot image	Cone-beam CT
Excellent	11	16
Good	8	7
Poor	3	3
Total	22	26

Discordance between the two modalities-5 nodules [over-: 9% (2/22), underestimated: 14% (3/22) in spot image]. CT: Computed tomography.

Table 2 Degree of iodized oil uptake by the tumors according to size

Size	Degree of iodized oil uptake in spot image			Degree of iodized oil uptake in cone-beam CT
	Excellent	Good	Poor	Excellent	Good	Poor
≤ 1	5	3	1	7	4
≤ 2	6	4	2	8	2	3
≤ 3		1		1	1
Total	11	8	3	16	7	3

Discordance in degree of iodized oil uptake occurred in nodules less than 2 cm (3 nodules less than 1 cm).

Table 3 Enhancement patterns and iodized oil uptake in three nodules without typical enhancement patterns of HCCs on MDCT and MRI

Nodule	Modality	Phase		Degree of iodized oil uptake
		EA	Delayed	Spot image	Cone-beam CT
1	CT	Subtle E	Washout	Poor	Poor
21	CT	No E	No E	Poor	Excellent
3	MRI	Subtle E	Washout	Invisible	Good

¹Same patient in Figure 2. EA: Early arterial phase; Delayed: Delayed phase; Subtle E: Subtle enhancement; No E: No enhancement. HCC: Hepatocellular carcinoma; MDCT: Multi-detector row helical computed tomography; MRI: Magnetic resonance imaging.