Gravity assistance enables liver stiffness measurements to detect liver fibrosis under congestive circumstances

Table 1 Patients’ characteristics

Background
Sex (F:M)	142:156
Age	62.31	years old	49.6-71.42
BMI	22.91	kg/m2	20.8-25.52
Liver diseases
Alcoholic liver disease	28
HBV	38
HCV	40
Nonalcoholic fatty liver diseases	56
Hepatocellular carcinoma	12
Other chronic liver dysfunction	69
Miscellaneous	55	Total	298
Shear wave elastography
2dSWE (supine)	1.52 (6.93)1	m/sec (kPa)	1.43-1.672
			(6.13-8.37)
2dSWE (left decubitus)	1.57 (7.39)1	m/sec (kPa)	1.46-1.742
			(6.39-9.08)
			Wilcoxon matched-pairs signed rank test, P < 0.0001
%CVRsup	9.73	%	5.74
%CVRsup ≤ Δ2dSWE%	81 (27.2%)

¹Median.

²Interquartile range.

³Average.

⁴Standard deviation. F: Female; M: Male; BMI: Body mass index; 2dSWE: Two-dimensional shear wave elastography; %CVRsup: Robust coefficient of variation on supine position in percentage against the median value; Δ2dSWE%: The difference of 2dSWEs between supine and left decubitus positions in percentage against the median value.

Table 2 Summary of shear wave elastography

	Shear wave elastography
Group (n)	Supine
	Median		Inter quartile range
Normal-to-Hard (37)	1.35 (5.47)	m/sec (kPa)	1.30 (5.07)-1.38 (5.71)
Hard-to-Hard (27)	1.56 (7.30)	m/sec (kPa)	1.47 (6.48)-1.64 (8.07)
Hard-to-Soft (17)	1.62 (7.87)	m/sec (kPa)	1.57 (7.39)-1.84 (10.16)
	Left decubitus
	Median		Inter quartile range
Normal-to-Hard (37)	1.53 (7.02)	m/sec (kPa)	1.46 (6.39)-1.63 (7.97)
Hard-to-Hard (27)	1.79 (9.61)	m/sec (kPa)	1.68 (8.47)-1.99 (11.88)
Hard-to-Soft (17)	1.52 (6.93)	m/sec (kPa)	1.33 (5.31)-1.64 (8.07)