Skip to main content

Table 1 Distribution of CT-guided periradicular injections in conventional and low-dose mode with radiation dose comparisons

From: Radiation dose reduction in CT-guided periradicular injections in lumbar spine: Feasibility of a new institutional protocol for improved patient safety

Nerve root

Mode

N

DLP (mGycm2) mean dose

DLPSD

M-Wu-test

Dose reduction %

L 2

Conventional m.

4

78.00

22.21

  
 

Low-dose mode

4

13.91

1.78

p = 0.0304

- 82.17%

L 3

Conventional m.

11

90.09

42.67

  
 

Low-dose mode

4

12.37

2.54

p = 0.0050

- 86.27%

L 4

Conventional m.

10

86.60

22.43

  
 

Low-dose mode

11

13.30

2.62

p < 0.001

- 84,64%

L 5

Conventional m.

16

103.19

34.70

  
 

Low-dose mode

22

14.36

2.68

p < 0.001

- 86.08%

S 1

Conventional m.

9

100.22

33.07

  
 

Low-dose mode

9

14.03

2.10

p < 0.001

- 85.67%

Total L 1 - S 1

Conventional m.

50

94.44

33.34

  
 

Low-dose mode

50

13.87

2.48

p < 0.001

- 85.31%

  1. Abbreviations: DLP = dose length product (mGycm2), SD = standard deviation, N = amount, M-W = Mann–Whitney (U-) test.