Table 1:

Image-quality scores for scoring method 1 (visualization of 6 bony anatomic structures) and scoring method 2 (subjective impression of the overall quality of the study) for each imaging technique, with left and right sides combineda

Standard CTConebeam CTDifference
Score 1b
    Reader 111 ± 2.8 (3–12)10.5 ± 3.4 (3–12)0.5c
    Reader 211 ± 2.9 (3–12)10.25 ± 3.5 (3–12)0.75d
    Difference00.250.5c
Score 2e
    Reader 15 ± 0.45 (4–5)4 ± 0.7 (4–5)1d
    Reader 25 ± 0.22 (3–5)4 ± 0.54 (3–5)1d
    Difference000

  • ↵a Data are median values ± SD (range).

  • ↵b Score 1: 0- to 12-point scale.

  • ↵c P < .01.

  • ↵d P < .001.

  • ↵e Score 2: 1- to 5-point scale.