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Table 3 Statistical results of radiation dose between EOS and standard digital radiography

From: Radiation dose of digital radiography (DR) versus micro-dose x-ray (EOS) on patients with adolescent idiopathic scoliosis: 2016 SOSORT- IRSSD “John Sevastic Award” Winner in Imaging Research

 

EOS (n = 99)

Digital Radiography (n = 33)

Ratio (DR/EOS)

p-value

Entrance Skin Dose (μGy)

- Sternal Notcha

25.0 (4.8)

140.9 (49.6)

5.6

<0.001*

- Nipple Linea

26.0 (4.7)

521.4 (216.4)

20.1

<0.001*

- Symphysis Pubisa

27.2 (5.1)

724.9 (295.7)

26.7

<0.001*

Effective Dose (μSv)

2.6 (0.5)

67.5 (23.3)

26.0

<0.001*

Organ Dose (μGy)

- Thyroid

0.80 (0.3)

12.3 (4.0)

15.5

<0.001*

- Lung

5.3 (1.0)

108.5 (39.7)

20.5

<0.001*

- Reproductive Organ

2.0 (1.0)

68.0 (34.6)

34.5

<0.001*

DAP (mGycm2)

39.8 (7.2)

609.5 (263.6)

15.3

<0.001*

  1. * indicates statistically significant difference at 0.05 level
  2. a entrance skin doses were obtained at dorsal sites (the back of each volunteer) at the level of corresponding anterior structures