Evaluation of high temporal resolution magnetic resonance imaging of the liver with gadoxetate disodium in combination with compressed sensing and parallel imaging under single breath-holding using a 1.5-T magnetic resonance system

Egyptian Journal of Radiology and Nuclear Medicine

Table 4 Visual scores and number of optimal arterial phases

Evaluating items	6-s scan group	10-s scan group	P-value
Outline of the liver
Pre-contrast	2.01 ± 0.81	2.28 ± 0.72*	0.025^a
Arterial	2.10 ± 0.78	2.30 ± 0.62*	0.039^a
Portal venous	2.43 ± 0.72	2.64 ± 0.56	0.174^a
Hepatobiliary	3.04 ± 0.74	3.22 ± 0.76	0.287^a
IRHV
Pre-contrast	1.57 ± 0.67	1.88 ± 0.65*	0.035^a
Hepatobiliary	2.09 ± 0.93	2.39 ± 0.79	0.141^a
RPV	2.11 ± 0.75	2.28 ± 0.83	0.316^a
RHA	2.25 ± 1.01	2.10 ± 0.90	0.545^a
Optimal arterial phase	29/51 (56.9)	12/25 (48.0)	0.731^b
Overall image quality	1.76 ± 0.66	2.22 ± 0.81*	0.006^a

Data are presented as means ± 1 standard deviation, except for the optimal arterial phase, which shows the number of patients scored 3 (“Optimal” arterial phase) by both two radiologists
The numbers in parentheses are the percentage of the optimal arterial phase
IRHV, inferior right hepatic vein; RPV, right portal vein; RHA, right hepatic artery
^aMann–Whitney U test
^bChi-square test
*Significant difference (P < 0.05) between two scan protocols