Intraobserver and interobserver reproducibility in linear measurements on axial images obtained by cone-beam computed tomography
Imaging Science in Dentistry
;
: 11-15, 2017.
Article
in English
| WPRIM
| ID: wpr-81394
ABSTRACT
PURPOSE:
This study was performed to investigate the intra- and inter-observer variability in linear measurements with axial images obtained by PreXion (PreXion Inc., San Mateo, USA) and i-CAT (Imaging Sciences International, Xoran Technologies Inc., Hatfield, USA) CBCT scanners, with different voxel sizes. MATERIALS ANDMETHODS:
A cylindrical object made from nylon with radiopaque markers (phantom) was scanned by i-CAT and PreXion 3D devices. For each axial image, measurements were taken twice in the horizontal (distance A-B) and vertical (distance C-D) directions, randomly, with a one-week interval between measurements, by four oral radiologists with five years or more experience in the use of these measuring tools.RESULTS:
All of the obtained linear measurements had lower values than those of the phantom. The statistical analysis showed high intra- and inter-observer reliability (p=0.297). Compared to the real measurements, the measurements obtained using the i-CAT device and PreXion tomography, on average, revealed absolute errors ranging from 0.22 to 0.59 mm and from 0.23 to 0.63 mm, respectively.CONCLUSION:
It can be concluded that both scanners are accurate, although the linear measurements are underestimations, with no significant differences between the evaluators.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Observer Variation
/
Reproducibility of Results
/
Cone-Beam Computed Tomography
/
Dimensional Measurement Accuracy
/
Nylons
Language:
English
Journal:
Imaging Science in Dentistry
Year:
2017
Type:
Article
Similar
MEDLINE
...
LILACS
LIS