Reliability analysis for coronal cobb angle measurements of digitally acquired photograph to the 30 x 90 cm films in adult scoliosis: comparison among two observers and three digital cameras.
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Published:
Dec 28, 2013
Keywords:
Digital photography, Cobb angles, Digital measurement, Adult scoliosis, Interobserver and Intraobserver correlation
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Abstract
BackgroundDigital photography to radiographs can generate angular distortions to the images. It is not published if these distortions can affect the lines used for Cobb measurements in routine practice.Objective:To analyze reliability for coronal Cobb angle measurements of digitally acquired photograph to the 30 x 90 cm plain films in adult scoliosis.MethodsTwenty anteroposterior long-cassette scoliosis radiographs from adult patients who were operated on in one institution were randomly selected and prospectively studied. The endplates of the curves were selected and marked by one observer. The radiographs were scanned and the digital images were used as controls. The variability of the measurements was evaluated with three digital cameras and two observers making eight photographic sessions to each long-film. Over the digital images the Cobb angles were measured using Adobe Photoshop® and they were analyzed with the Pearson correlation coefficient.ResultsThe overall mean thoracic and lumbar Cobb an- gles for the scanned, camera 1, 2 and 3 were 37.9, 37.8, 37.7, 37.5, 53.2, 53.1, 53.3, 52.9, respectively. The interobserver and intraobserver agreement was extremely high, as well as across cameras and scanner.ConclusionThe Cobb angle can be measured after digitally photographed films with high reliability among different cameras and observers.
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Petracchi, M., Imposti, F., Valacco, M., Sola, C., & Gruenberg, M. (2013). Reliability analysis for coronal cobb angle measurements of digitally acquired photograph to the 30 x 90 cm films in adult scoliosis: comparison among two observers and three digital cameras. Revista De La Asociación Argentina De Ortopedia Y Traumatología, 78(4), 210-216. https://doi.org/10.15417/144
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Clinical Research
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References
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13. Kuklo TR, Potter BK, Schroeder TM, O’Brien MF. Comparison of manual and digital measurements in adolescent idiopathic scoliosis. Spine (Phila Pa 1976) 2006;31(11):1240-6.
14. Naoumova J, Lindman R. A comparison of manual traced images and corresponding scanned radiographs digitally traced. Eur J Orthop 2009;31(3):247-53.
15. Shea KG, Stevens PM, Nelson M, Smith JT, Masters KS, Yandow S. A comparison of manual versus computer-assisted radiographic measurement. Intraobserver measurement variability for Cobb angles. Spine (Phila Pa 1976) 1998;23(5):551-5.
16. Carman DL, Browne RH, Birch JG. Measurement of scoliosis and kyphosis radiographs. Intraobserver and interobserver variation. J Bone Joint Surg Am 1990;72(3):328-33.
17. Morrissy RT, Goldsmith GS, Hall EC, Kehl D, Cowie GH. Measurement of the Cobb angle on radiographs of patients who have scoliosis. Evaluation of intrinsic error. J Bone Joint Surg Am 1990;72(3):320-7.
18. Wills BP, Auerbach JD, Zhu X, Caird MS, Horn BD, Flynn JM, et al. Comparison of Cobb angle measurement of scoliosis radiographs with preselected end vertebrae: traditional versus digital acquisition. Spine (Phila Pa 1976) 2007;32(1):98-105.
19. Pavlovich RI, Vazquez-Vela G, Pardinas JL, Villarreal JMB, Rico EC, Behar GM. Basic science in digital imaging: Digital dynamic radiography, multimedia, and their potential uses for orthopaedics and arthroscopic surgery. Arthroscopy 2002;18:639-47.
2. Mah ET, Thomsen NO. Digital photography and computerisation in orthopaedics. J Bone Joint Surg Br 2004;86(1):1-4.
3. Schenk MP, Manning RJ, Paalman MH. Going digital: image preparation for biomedical publishing. Anat Rec 1999;257(4):128-36.
4. Donndorff AG, González Della Valle A. Fotografía digital. Conocimientos básicos para su aplicación en ortopedia y traumatología.
Rev Asoc Argent Ortop Traumatol 2003;67:87-94.
5. Rosen Al, Hausman M. Digital imaging and video: Principles and applications. J Am Acad Orthop Surg 2003;11:373-379.
6. Petracchi M, Solá C, Núñez L, Gruenberg M, Ortolán E. Osteotomías virtuales espinales en el deseje sagital. Congreso de la Sociedad Argentina de la Patología de la Columna Vertebral 2004.
7. Gupta MC, Wijesekera S, Sossan A, Martin L, Vogel LC, Boakes JL, et al. Reliability of radiographic parameters in neuromuscular scoliosis. Spine (Phila Pa 1976) 2007;32(6):691-5.
8. Kuklo TR, Potter BK, O’Brien MF, Schroeder TM, Lenke LG, Polly DW, Jr. Reliability analysis for digital adolescent idiopathic scoliosis measurements. J Spinal Disord Tech 2005;18(2):152-9.
9. Kuklo TR, Potter BK, Polly DW, Jr., O’Brien MF, Schroeder TM, Lenke LG. Reliability analysis for manual adolescent idiopathic scoliosis measurements. Spine (Phila Pa 1976) 2005;30(4):444-54.
10. Mok JM, Berven SH, Diab M, Hackbarth M, Hu SS, Deviren V. Comparison of observer variation in conventional and three digital radiographic methods used in the evaluation of patients with adolescent idiopathic scoliosis. Spine (Phila Pa 1976) 2008;33(6):681-6.
11. Cobb JR. Outline for the study of scoliosis. Instruct Course Lect 1948;5:61-75.
12. Rosenfeldt MP, Harding IJ, Hauptfleisch JT, Fairbank JT. A comparison of traditional protractor versus Oxford Cobbometer radiographic measurement: intraobserver measurement variability for Cobb angles. Spine (Phila Pa 1976) 2005;30(4):440-3.
13. Kuklo TR, Potter BK, Schroeder TM, O’Brien MF. Comparison of manual and digital measurements in adolescent idiopathic scoliosis. Spine (Phila Pa 1976) 2006;31(11):1240-6.
14. Naoumova J, Lindman R. A comparison of manual traced images and corresponding scanned radiographs digitally traced. Eur J Orthop 2009;31(3):247-53.
15. Shea KG, Stevens PM, Nelson M, Smith JT, Masters KS, Yandow S. A comparison of manual versus computer-assisted radiographic measurement. Intraobserver measurement variability for Cobb angles. Spine (Phila Pa 1976) 1998;23(5):551-5.
16. Carman DL, Browne RH, Birch JG. Measurement of scoliosis and kyphosis radiographs. Intraobserver and interobserver variation. J Bone Joint Surg Am 1990;72(3):328-33.
17. Morrissy RT, Goldsmith GS, Hall EC, Kehl D, Cowie GH. Measurement of the Cobb angle on radiographs of patients who have scoliosis. Evaluation of intrinsic error. J Bone Joint Surg Am 1990;72(3):320-7.
18. Wills BP, Auerbach JD, Zhu X, Caird MS, Horn BD, Flynn JM, et al. Comparison of Cobb angle measurement of scoliosis radiographs with preselected end vertebrae: traditional versus digital acquisition. Spine (Phila Pa 1976) 2007;32(1):98-105.
19. Pavlovich RI, Vazquez-Vela G, Pardinas JL, Villarreal JMB, Rico EC, Behar GM. Basic science in digital imaging: Digital dynamic radiography, multimedia, and their potential uses for orthopaedics and arthroscopic surgery. Arthroscopy 2002;18:639-47.