TY - JOUR
T1 - 3D reconstruction of the ribs from lateral and frontal X-rays in comparison to 3D CT-scan reconstruction
AU - Mitton, David
AU - Zhao, Kristin
AU - Bertrand, Samuel
AU - Zhao, Chunfeng
AU - Laporte, Sébastien
AU - Yang, Chao
AU - An, Kai Nan
AU - Skalli, Wafa
PY - 2008
Y1 - 2008
N2 - Subject-specific three-dimensional (3D) reconstructions of the ribs can be obtained from biplanar X-rays. The goal of this study was to evaluate the accuracy and the inter-observer reproducibility of this technique in comparison to CT-scan reconstructions. CT scans and biplanar X-rays were obtained from 50 ribs (from three cadaveric rib cages). Three experienced experimenters reconstructed each rib from biplanar X-rays. Morphometric parameters were then computed from the rib midlines. Differences were computed between parameters obtained from the 3D reconstructions based on biplanar X-rays and from CT scans. The accuracy was computed as the mean of this difference for the 50 ribs from all three experimenters. The inter-observer variability was assessed using the coefficient of variation (CV) between the three observers. The CT-scan reconstructions were considered to be the gold standard in spite of their limitations for rib reconstructions. According to the different linear parameters, the accuracy of the reconstructions was found to be between -6 mm (-2%) and 3 mm, (4%). The accuracy of the current method was close to that of CT-scan reconstructions. The inter-observer variability was between 3% and 6%. Frontal and lateral X-rays are commonly obtained clinically, so 3D reconstructions can be used without increased radiation exposure to the patient.
AB - Subject-specific three-dimensional (3D) reconstructions of the ribs can be obtained from biplanar X-rays. The goal of this study was to evaluate the accuracy and the inter-observer reproducibility of this technique in comparison to CT-scan reconstructions. CT scans and biplanar X-rays were obtained from 50 ribs (from three cadaveric rib cages). Three experienced experimenters reconstructed each rib from biplanar X-rays. Morphometric parameters were then computed from the rib midlines. Differences were computed between parameters obtained from the 3D reconstructions based on biplanar X-rays and from CT scans. The accuracy was computed as the mean of this difference for the 50 ribs from all three experimenters. The inter-observer variability was assessed using the coefficient of variation (CV) between the three observers. The CT-scan reconstructions were considered to be the gold standard in spite of their limitations for rib reconstructions. According to the different linear parameters, the accuracy of the reconstructions was found to be between -6 mm (-2%) and 3 mm, (4%). The accuracy of the current method was close to that of CT-scan reconstructions. The inter-observer variability was between 3% and 6%. Frontal and lateral X-rays are commonly obtained clinically, so 3D reconstructions can be used without increased radiation exposure to the patient.
UR - http://www.scopus.com/inward/record.url?scp=38749115746&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=38749115746&partnerID=8YFLogxK
U2 - 10.1016/j.jbiomech.2007.09.034
DO - 10.1016/j.jbiomech.2007.09.034
M3 - Article
C2 - 17981286
AN - SCOPUS:38749115746
VL - 41
SP - 706
EP - 710
JO - Journal of Biomechanics
JF - Journal of Biomechanics
SN - 0021-9290
IS - 3
ER -