Feasibility of imaging superficial palmar arch using micro-ultrasound, 7T and 3T magnetic resonance imaging

Table 1 Imaging protocol for both 3T and 7T magnetic resonance imaging

Parameter	7T T2 SPACE	3T T2 SPACE	7T TOF	3T TOF
TE	101	77	2.81	3.23
TR	1500	1600	60	21
Slice thickness	625.00 μm	630.00 μm	160.00 mm	1.00 mm
Pixel size	0.600/0.600	0.625/0.625	0.3125/0.3125	0.234/0.234
Number of averages	2	4	1	1
Field of view	136 × 160	100 × 160	160 × 160	107 × 120

Table 2 Data from 3 subjective analyses of image quality with average and standard deviation

Subject	B mode	3T	7T
1	3.00	3.33	3.00
2	3.00	2.00	Not available
3	3.00	4.33	4.67
4	4.00	2.00	4.33
Average	3.25	2.92	4.00
Standard deviation	0.50	1.13	0.882

Table 3 RM one-way ANOVA and Tukey’s multiple comparisons test

Vessel wall measurements	P value
Lumen area	0.3152
Wall area	0.0628
Total vessel area	0.0573
Normalized wall index	0.0362a
Wall thickness	0.0519

^aP < 0.05, significant.