MR-arterioportography: A new technical approach for detection of liver lesions

Table 1 MR-arterioportography standard protocol

Scans	Plane	TE	TR	Flip angle
Unenhanced
T2-weighted TRUFI	Coronal	1.9	3.8	71°
T2-weighted TRUFI	Transversal	1.88	3.76	71°
T1-weighted VIBE	Transversal	2.02	4.78	10°
Enhanced
T1-weighted FLASH FS CE	Transversal	4.76	123	70°
T1-weighted VIBE dynamic1	Transversal	2.02	4.78	10°

¹Dynamic scans were started immediately following application of 10 mL Gd-DTPA. MRI: Magnetic resonance imaging.

Table 2 Magnetic resonance imaging standard protocol

Scans	Plane	TE	TR	Flip angle
Unenhanced
T1-weighted VIBE	Transversal	1.59	4.37	10°
T2-star-weighted FLASH 2D	Transversal	10.00	169.00	90°
T2-weighted TSE FS	Transversal	105.00	2740.00	170°
T1-weighted FLASH opp	Transversal	2.71	100.00	70°
T1-weighted FLASH in	Transversal	4.76	87.00	60°
T2-weighted HASTE	Transversal	85.00	1000.00	150°
T2-weighted TRUFI	Coronal	1.83	3.65	71°
T1-weighted VIBE	Transversal	1.55	4.81	10°
Enhanced
T1-weighted VIBE dynamic1	Transversal	1.55	4.81	10°
T1-weighted FLASH FS	Transversal	4.76	123.00	70°
T1-weighted FLASH FS	Coronal	4.76	94.00	70°
T2-star-weighted FLASH 22	Transversal	10.00	69.00	90°
T2-weighted TSH FS2	Transversal	105.00	2740.00	170°

¹Dynamic scans were started immediately following application of Gd-DTPA (0.2 mmol/kg);

²Following application of 1.4 mL Resovist.

Table 3 Number of lesions detected in MR-arterioportography and magnetic resonance imaging

Patient	Age (yr)	MR-APnumber of lesions∑102/103		Double-enhanced MRI number of lesions∑60/56
		Reader 1	Reader 2	Reader 1	Reader 2
1	62	9	9	5	4
2	47	7	8	2	2
3	70	4	5	2	2
4	74	7	8	4	3
5	51	3	3	3	3
6	76	1	2	1	1
7	70	6	6	9	8
81	63	-	-	(7)	(7)
9	70	4	4	2	2
10	63	9	8	2	2
11	51	9	8	6	5
12	63	10	11	3	2
13	57	6	6	2	2
14	67	5	4	4	5
15	51	4	3	3	2
16	53	0	0	1	1
17	51	2	2	2	2
18	54	5	6	3	3
19	57	9	8	4	4
20	73	2	2	3	3

¹Patient No. 8 was excluded from the evaluation for diffuse infiltration of virtually all liver segments. P = 0.0024 (relation of the number of lesions detected in MR-AP and MRI). MR-AP: MR-arterioportography; MRI: Magnetic resonance imaging.