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Table 2 Distribution of the lesions integrated into the grading system, number of involved zones (n), and percentages (%) (n = 113, total zone = 678)

From: Efficacy of chest X-ray in the diagnosis of COVID-19 pneumonia: comparison with computed tomography through a simplified scoring system designed for triage

 

Grade 1

Grade 2

Grade 3

Total

CXR

CT

CXR

CT

CXR

CT

CXR

CT

RLZ

26.5% (30)

52.2% (59)

20.4% (23)

17.7% (20)

14.2% (16)

23.9% (27)

61.0% (69)

93.8% (106)

RMZ

23.9% (27)

45.1% (51)

12.4% (14)

24.8% (28)

10.6% (12)

20.4% (23)

46.9% (53)

90.3% (102)

RUZ

8.0% (9)

53.1% (60)

5.3% (6)

15.9% (18)

5.3% (6)

7.1% (8)

18.6% (21)

76.1% (86)

LLZ

24.8% (28)

46.9% (53)

15.9% (18)

20.4% (23)

10.6% (12)

17.7% (20)

51.3% (58)

85.0% (96)

LMZ

13.3% (15)

45.1% (51)

8.0% (9)

23.0% (26)

9.7% (11)

14.2% (16)

31.0% (35)

82.3% (93)

LUZ

4.4% (5)

53.1% (60)

2.7% (3)

10.6% (12)

5.3% (6)

5.3% (6)

12.4% (14)

69.0% (78)

Total

16.8% (114)

49.2% (334)

11.6% (73)

18.7% (127)

9.2% (63)

14.7% (100)

36.9% (250)

82.7% (561)

  1. CXR chest X-ray, CT computed tomography, LLZ left lower zone, LMZ left middle zone, LUZ left upper zone, RLZ right lower zone, RMZ right middle zone, RUZ right upper zone