Table 1 Human kidney vascular branching metrics by truncated Strahler generation (means with standard deviation are shown)

From: Mapping the arterial vascular network in an intact human kidney using hierarchical phase-contrast tomography

Truncated Strahler order

No. of segments

Radium (µm)

Length µm × 103

Tortuosity

Length:diameter

Vol. × 108 µm3

Branching angle o

IVD µm × 103

1

5105

45 ± 5

2.6 ± 1.7

1.2 ± 0.20

57.4 ± 36

0.18 ± 0.22

129 ± 28

1.1 ± 0.4

2

3030

56 ± 15

1.8 ± 1.4

1.1 ± 0.16

32.3 ± 26

0.21 ± 0.46

128 ± 29

0.9 ± 0.4

3

1295

95 ± 37

1.8 ± 1.4

1.1 ± 0.14

20.2 ± 18

6.7 ± 10.3

128 ± 29

1.1 ± 0.4

4

516

165 ± 60

2.3 ± 1.9

1.1 ± 0.13

14.6 ± 12

25.5 ± 34.9

135 ± 29

1.4 ± 0.5

5

150

294 ± 110

3.3 ± 2.6

1.1 ± 0.05

12.2 ± 9.4

11.3 ± 17.1

142 ± 25

1.8 ± 0.7

6

69

684 ± 250

4.3 ± 3.1

1.1 ± 0.06

6.5 ± 4.5

84.6 ± 104

149 ± 21

2.9 ± 0.7

7

20

839 ± 251

7.2 ± 4.9

1.1 ± 0.05

8.5 ± 4.8

223 ± 302

148 ± 24

6.1 ± 1.5

8

4

877 ± 188

8.1 ± 4.7

1.1 ± 0.07

9.6 ± 6.3

227 ± 159

141 ± 6

4.7 ± 1.5

9

1

2923

669

1.0

0.2

180

-

-