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Table 4 Presence of motion artefacts related to FOV, acquisition time, and anatomical area

From: Effect of patient anxiety on image motion artefacts in CBCT

MA FOV* (cm) Acquisition timeβ (sec) Anatomical areaπ
5 × 5 5 × 8 Double 5 × 5 Double 5 × 8 Triple 5 × 5 Triple 5 × 8 Mean SD Jaws TMJ
+ (n = 2) 15.4% (n = 1) 4.3% (n = 0) 0.0% (n = 2) 6.5% (n = 0) 0% (n = 1) 5.9% 20.274 10.055 (n = 6) 7.5% (n = 0) 0%
- (n = 11) 84.6% (n = 22) 95.7% (n = 4) 100% (n = 29) 93.5% (n = 12) 100% (n = 16) 94.1% 23.739 9.963 (n = 74) 92.5% (n = 20) 100%
  95% confidence intervals Lower −5.427  
Upper 11.707
  1. Bootstrap Sampling Method = Simple, Bootstrap number of samples = 1000, 95% confidence intervals
  2. * χ2 = 3.124, p = 0.673 > 0.05, βMann-Whitney U = 223, p = 0.392 > 0.05, π Fisher’s p value = 0.597 > 0.05
  3. MA motion artefact, + present, − absent, FOV field of view, Double two horizontal stitched volumes, Triple three horizontal stitched volumes, n noun, SD standard deviation, TMJ temporomandibular joint