Rubens Spin-Neto

Movement characteristics in young patients and the impact on CBCT image quality

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OBJECTIVE: To assess patient movement characteristics in children and young adults and the impact on CBCT image quality.

METHODS: During 33 CBCT examinations, the patient (age average 14 years; range 9-25) had moved, identified by video observation (Movement group, MG). The CBCT datasets were matched with those of 33 non-moving patients according to age, diagnostic task, examined region, field-of-view, and voxel resolution (Non-movement group, N-MG). Three observers scored the videos MG regarding motional state second-by-second (moving/non-moving), and movement characteristics: duration (seconds), complexity (uniplanar or multiplanar), and distance (<3/≥3≤10/>10mm). The observers blindly assessed axial sections of the 66 examinations individually, categorizing image quality (appropriate/acceptable/inappropriate). Next, the observers blindly assessed axial sections of the matched-pairs images simultaneously, deciding which image in the pair had the higher image quality, or if it was impossible to decide. The relationship between image quality and movement/movement characteristics was evaluated.

RESULTS: When the 66 CBCT images were evaluated individually, no relationship between image quality and movement was found. However, based on the matched-pairs assessment, accumulated number (≤2 vs. ≥3, p=0.039), duration (≤5s vs. ≥6s, p=0.024), and complexity (uniplanar vs. multiplanar, p=0.046) of movements had an impact on image quality; the more severe the movement, the more often the image quality was assessed lower in the MG.

CONCLUSIONS: Axial CBCT images of young moving patients did not always present lower quality than images originating from non-moving patients. Image quality was however significantly lower in the moving patients when movement occurred several times, had a long duration, or was multiplanar.

OriginalsprogEngelsk
TidsskriftDentomaxillofacial Radiology
Sider (fra-til)20150426
Antal sider7
ISSN0250-832X
DOI
StatusUdgivet - 26 feb. 2016

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