Table 2 Subjective image quality.

From: Quantitative and qualitative image quality assessment in shoulder examinations with a first-generation photon-counting detector CT

 

UHR-PCD-CT

Non-UHR-PCD-CT

EID-CT

Full-dose

Low-dose

Full-dose

Low-dose

Full-dose

Low-dose

7

52 (54.2%)

14 (14.6%)

2 (2.1%)

0

0

0

6

35 (36.5%)

48 (50.0%)

17 (17.7%)

8 (8.3%)

10 (10.4%)

3 (3.1%)

5

9 (9.4%)

34 (35.4%)

56 (58.3%)

34 (35.4%)

31 (32.3%)

6 (6.3%)

4

0

0

21 (21.9%)

45 (46.9%)

48 (50.0%)

27 (28.1%)

3

0

0

0

9 (9.4%)

7 (7.3%)

47 (49.0%)

2

0

0

0

0

0

13 (13.5%)

1

0

0

0

0

0

0

Median (IQR)

7 (6–7)

6 (5–6)

5 (5–5)

4 (4–5)

4 (4–5)

3 (3–4)

  1. Pooled image quality ratings of six radiologists for PCD- and EID-CT examinations in 16 shoulders of cadaveric specimens (7 = excellent; 6 = very good; 5 = good; 4 = satisfactory; 3 = fair; 2 = poor; 1 = very poor).
  2. EID-CT energy-integrating CT, IQR interquartile range, PCD-CT photon-counting CT, UHR ultra-high resolution.
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