Differences in the Properties of the Radial Artery between Cun, Guan, Chi, and Nearby Segments Using Ultrasonographic Imaging: A Pilot Study on Arterial Depth, Diameter, and Blood Flow

Table 2

Artery depth and diameter and blood flow velocities.

Variable	Measurement location mean (SD)
	Cun	Guan	Chi	P1	P2	P3
Left
Artery depth (mm)	3.26 (0.71)	2.74 (0.66)	3.32 (0.85)	3.79 (1.09)	3.90 (1.11)	4.17 (1.26)
Artery diameter (mm)	2.52 (0.36)	2.42 (0.35)	2.52 (0.30)	2.54 (0.32)	2.51 (0.31)	2.51 (0.31)
Maximum blood flow velocity (cm/sec)	41.68 (12.39)	55.34 (14.70)	56.26 (11.82)	54.98 (12.23)	56.36 (12.21)	57.66 (13.57)
Average blood flow velocity (cm/sec)	5.75 (3.25)	9.24 (4.86)	9.51 (4.44)	9.81 (5.24)	9.66 (4.51)	10.14 (5.04)
Right
Artery depth (mm)	3.60 (0.82)	2.74 (0.72)	3.36 (1.14)	3.95 (1.36)	4.32 (1.42)	4.64 (1.41)
Artery diameter (mm)	2.47 (0.39)	2.37 (0.32)	2.46 (0.33)	2.53 (0.41)	2.55 (0.34)	2.55 (0.33)
Maximum blood flow velocity (cm/sec)	35.50 (4.64)	49.28 (11.95)	50.91 (11.55)	51.43 (12.53)	52.85 (13.15)	53.94 (12.13)
Average blood flow velocity (cm/sec)	4.64 (2.99)	7.46 (4.24)	7.98 (4.41)	8.26 (4.44)	8.45 (5.12)	8.39 (4.43)