Repetition of examination due to motion artifacts in horizontal cone beam CT: Comparison among three different kinds of head support

Repetition Rate of Scanning Due to Motion Artefacts in Cone-Beam Computed Tomography: a Retrospective Study

“…In the present study, the amount of repeated scans due to motion artefact was 1.96% in 6364 patients. This finding is not consistent with the majority of the studies mentioned above [17][18][19]. The differences in the amount of repeated scans can be attributed to several reasons.…”

“…Previous studies have shown a range of motion artefact prevalence in CBCT imaging, from 4.5 to 48.2% [ 18 , 19 ]. The variability in reported prevalence rates of motion artefacts in CBCT images can be explained by differences in assessment methods, patient demographics, CBCT devices, and imaging protocols.…”

“…Spin-Neto et al [ 17 ] showed that 0.4% of 248 CBCT examinations needed to be redone due to severe motion artefact. In the study reported by Nardi et al [ 18 ] the amount of repeated CBCT examinations was 5.4% in 750 patients. According to the current guidelines of the European Commission Directorate for Energy ( ), it is recommended that no more than 5% of CBCT images require a retake [ 1 ].…”

“…Donaldson et al [ 19 ] reported that patients under 16 years old and over 65 years old had an increased incidence of motion artefacts. Nardi et al [ 18 ] classified the patients into 3 different groups as under 18 years old, 19 to 65 years old, and over 65 years old and they found the highest rate of images requiring repetition due to motion artefact in over 65-year-old patients. In our study, the patients were grouped into eight categories according to age: 1) < 10-year-olds, 2) 10 to 19-year-olds, 3) 20 to 29-year-olds, 4) 30 to 39-year-olds, 5) 40 to 49-year-olds, 6) 50 to 59-year-olds, 7) 60 to 69-year-olds, and 8) > 70 year-olds.…”