Jaeyeong Park1, Jun-Young Kim2, Hyun Deok Kim3, Young Cheol Kim3, Anna Seo3, Minkyu Je4, Jong Uk Mun5, Bia Kim6, Il Hyung Park7, Shin-Yoon Kim7. 1. Division of Biomedical Science, Kyungpook National University, Daegu, Republic of Korea. 2. Department of Orthopedic Surgery, Kyungpook National University Hospital, 130 Dongeok-ro, Jung-gu, Daegu, 41944, Republic of Korea. dr.junyoung@gmail.com. 3. Institute of Advanced Convergence Technology, Kyungpook National University, Daegu, Republic of Korea. 4. School of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea. 5. Department of Orthopedic Surgery, Changwon Gyeongsang National University Hospital, Changwon, Republic of Korea. 6. Department of Psychology, Pusan National University, Pusan, Republic of Korea. 7. Department of Orthopedic Surgery, Kyungpook National University Hospital, 130 Dongeok-ro, Jung-gu, Daegu, 41944, Republic of Korea.
Abstract
PURPOSE: Radiographic measurements using two-dimensional (2D) plain radiographs or planes from computed tomography (CT) scans have several drawbacks, while measurements using images of three-dimensional (3D) reconstructed bone models can provide more consistent anthropometric information. We compared the consistency of results using measurements based on images of 3D reconstructed bone models (3D measurements) with those using planes from CT scans (measurements using 2D slice images). METHODS: Ninety-six of 561 patients who had undergone deep vein thrombosis-CT between January 2013 and November 2014 were randomly selected. We evaluated measurements using 2D slice images and 3D measurements. The images used for 3D reconstruction of bone models were obtained and measured using [Formula: see text] and [Formula: see text] (Materialize, Leuven, Belgium). RESULTS: The mean acetabular inclination, acetabular anteversion and femoral anteversion values on 2D slice images were 42.01[Formula: see text], 18.64[Formula: see text] and 14.44[Formula: see text], respectively, while those using images of 3D reconstructed bone models were 52.80[Formula: see text], 14.98[Formula: see text] and 17.26[Formula: see text]. Intra-rater reliabilities for acetabular inclination, acetabular anteversion, and femoral anteversion on 2D slice images were 0.55, 0.81, and 0.85, respectively, while those for 3D measurements were 0.98, 0.99, and 0.98. Inter-rater reliabilities for acetabular inclination, acetabular anteversion and femoral anteversion on 2D slice images were 0.48, 0.86, and 0.84, respectively, while those for 3D measurements were 0.97, 0.99, and 0.97. CONCLUSION: The differences between the two measurements are explained by the use of different tools. However, more consistent measurements were possible using the images of 3D reconstructed bone models. Therefore, 3D measurement can be a good alternative to measurement using 2D slice images.
PURPOSE: Radiographic measurements using two-dimensional (2D) plain radiographs or planes from computed tomography (CT) scans have several drawbacks, while measurements using images of three-dimensional (3D) reconstructed bone models can provide more consistent anthropometric information. We compared the consistency of results using measurements based on images of 3D reconstructed bone models (3D measurements) with those using planes from CT scans (measurements using 2D slice images). METHODS: Ninety-six of 561 patients who had undergone deep vein thrombosis-CT between January 2013 and November 2014 were randomly selected. We evaluated measurements using 2D slice images and 3D measurements. The images used for 3D reconstruction of bone models were obtained and measured using [Formula: see text] and [Formula: see text] (Materialize, Leuven, Belgium). RESULTS: The mean acetabular inclination, acetabular anteversion and femoral anteversion values on 2D slice images were 42.01[Formula: see text], 18.64[Formula: see text] and 14.44[Formula: see text], respectively, while those using images of 3D reconstructed bone models were 52.80[Formula: see text], 14.98[Formula: see text] and 17.26[Formula: see text]. Intra-rater reliabilities for acetabular inclination, acetabular anteversion, and femoral anteversion on 2D slice images were 0.55, 0.81, and 0.85, respectively, while those for 3D measurements were 0.98, 0.99, and 0.98. Inter-rater reliabilities for acetabular inclination, acetabular anteversion and femoral anteversion on 2D slice images were 0.48, 0.86, and 0.84, respectively, while those for 3D measurements were 0.97, 0.99, and 0.97. CONCLUSION: The differences between the two measurements are explained by the use of different tools. However, more consistent measurements were possible using the images of 3D reconstructed bone models. Therefore, 3D measurement can be a good alternative to measurement using 2D slice images.
Entities:
Keywords:
3D measurements; Acetabular orientation; Femoral anteversion; Images of 3D reconstructed bone models; Measurements using 2D slice images
Authors: Georgi I Wassilew; Carsten Perka; Christian Koenig; Viktor Janz; Patrick Asbach; Olaf Hasart Journal: Orthopedics Date: 2010-10 Impact factor: 1.390