Accuracy and Reliability of Length Measurements on Three-Dimensional Computed Tomography Using Open-Source OsiriX Software
- 20 January 2012
- journal article
- Published by Springer Science and Business Media LLC in Journal of Digital Imaging
- Vol. 25 (4), 486-491
- https://doi.org/10.1007/s10278-012-9458-6
Abstract
There is a growing interest in three-dimensional computed tomography (3D-CT) as a research tool for the study of bone, joint anatomy, and kinematics. However, when CT data are processed and handled manually using image processing programs to yield 3D image and coordinate value, systematic and random errors should be validated. We evaluated the accuracy and reliability of length measurement on CT with OsiriX software. 3D-CT scans were made of 14 frozen pig knees with five transosseous holes in the metaphyseal portion of femur. The lengths between tunnel orifices were measured using Mitutoyo Digimatic digital calipers to establish the gold standard, and with the OsiriX program in 3D multi-planar reformatting mode for comparison. All measurements were recorded by a principal (replicate 1, trial 1) and a secondary observer (replicate 2, trial 1) and were repeated once by each observer (trial 2). The mean differences between OsiriX and real measurements were less than 0.1 mm in both replicates, and maximum differences were less than 0.3 mm. There were no significant differences between the replicates and real measurements (p=0.544 and 0.622 for replicates 1 and 2, respectively). The intraclass correlation coefficients (ICC) were very high between trials and between replicates (ICC=0.998 and 0.999, respectively). For kinematic analysis of the knees, length measurements on 3D-CT using OsiriX program can be used as alternatives to real measurements with less than 0.3-mm accuracy and very high reliability.Keywords
This publication has 22 references indexed in Scilit:
- Computed tomography evaluation of the femoral and tibial attachments of the posterior cruciate ligament in vitroKnee Surgery, Sports Traumatology, Arthroscopy, 2011
- Nonanatomic Tunnel Position in Traditional Transtibial Single-Bundle Anterior Cruciate Ligament Reconstruction Evaluated by Three-Dimensional Computed TomographyJournal of Bone and Joint Surgery, 2010
- The Location of Femoral and Tibial Tunnels in Anatomic Double-Bundle Anterior Cruciate Ligament Reconstruction Analyzed by Three-Dimensional Computed Tomography ModelsJournal of Bone and Joint Surgery, 2010
- Assessment of correlation between knee notch width index and the three-dimensional notch volumeKnee Surgery, Sports Traumatology, Arthroscopy, 2010
- Demonstration of the Adamkiewicz Artery by Multidetector Computed Tomography Angiography Analysed with the Open-Source Software OsiriXEuropean Journal of Vascular and Endovascular Surgery, 2009
- Virtual CO2 MDCT pancreatography: a new feasible technique for minimally invasive pancreatectomy in intraductal papillary mucinous neoplasms.2008
- G*Power 3: A flexible statistical power analysis program for the social, behavioral, and biomedical sciencesBehavior Research Methods, 2007
- General Consumer Communication Tools for Improved Image Management and Communication in MedicineJournal of Digital Imaging, 2005
- OsiriX: An Open-Source Software for Navigating in Multidimensional DICOM ImagesJournal of Digital Imaging, 2004
- Effects of postmortem storage by freezing on ligament tensile behaviorJournal of Biomechanics, 1986