Journal of Research in Orthopedic Science
1
J. Res. Orthop. Sci.
Medical Sciences
http://jros.iums.ac.ir
1
admin
2676-7031
2676-7031
8
7
14
8888
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en
jalali
1398
11
1
gregorian
2020
2
1
7
1
online
1
fulltext
en
Comparison of Cobb Angles on Radiographs With Magnetic Resonance Imaging in Idiopathic Scoliosis
جراحی زانو
Knee surgery
پژوهشی
Research Article
<div style="text-align: justify;"><strong>Background: </strong>Patients with idiopathic scoliosis are exposed to repetitive x-ray for angle measurement. Therefore, the discovery or development of alternative techniques with less radiation has continuously been a major concern.<br>
<strong>Objectives:</strong> In this study, we compared the Cobb angles on supine Magnetic Resonance Imaging (MRI) with those on standing plain radiographs to figure out how precisely the supine MRI can show the real curve. Consequently, the need for certain exposures throughout the management of idiopathic scoliosis might be eliminated. <br>
<strong>Methods:</strong> A total of 103 patients with idiopathic scoliosis were included in this prospective study. The standing radiographs and supine MRI were obtained with less than a 1-month time lag. One senior author assessed Cobb angles of the major curves were on both standing radiographs and MR images. All the eligible patients had already signed the consent for diagnostic imaging, including MRI. The individuals, who were not requested for x-ray and MRI, were excluded from this study.<br>
<strong>Results:</strong> The Mean±SD Cobb angle was 55.5±11.2°‎‏ on the standing plain radiographs and 44.5±10°‎‏ on MR images (P<0.001). The Mean±SD difference between the Cobb angles on the standing plain radiographs and MR images was 11±1.4°‎‏. A significant positive correlation was found between the Cobb angles calculated on plain radiographs and MRI (r=0.996, P<0.001). Accordingly, Cobb angles on MRI could be converted to Cobb angles on plain radiographs under the formula of MRI=0.9* XRAY-5.31 (absolute error of 5.31°‎‏).<br>
<strong>Conclusion:</strong> Cobb angles on supine MRI correlates with measured ones on standing radiographs with an acceptable range of error and could be used as a valuable alternative for radiographic Cobb angle measurement.</div>
Idiopathic scoliosis, Cobb angle, Magnetic resonance imaging, Plain radiograph
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34
http://jros.iums.ac.ir/browse.php?a_code=A-10-695-1&slc_lang=en&sid=1
Hasan
Ghandhari
Ghandhari.h@iums.ac.ir
10031947532846003751
10031947532846003751
No
Bone and Joint Reconstruction Research Center, Shafa Orthopedic Hospital, Iran University of Medical Sciences, Tehran, Iran.
Naveed
Nabizadeh
nnabi94@gmail.com
10031947532846003752
10031947532846003752
No
Firoozgar Hospital, Iran University of Medical Science, Tehran, Iran.
Farshad
Nikouei
farshadnikouei@yahoo.com
10031947532846003753
10031947532846003753
No
Bone and Joint Reconstruction Research Center, Shafa Orthopedic Hospital, Iran University of Medical Sciences, Tehran, Iran.
Maryam
Ameri Mahabadi
m59_ameri@yahoo.com
10031947532846003754
10031947532846003754
No
Department of Forensic & Legal Medicine, Iran University of Medical Sciences, Tehran, Iran.
Seyed Mani
Mahdavi
Smanimahdavi@yahoo.com
10031947532846003755
10031947532846003755
No
Department of Orthopedic Spine Surgery, Rasoul-e-Akram Hospital, Iran University of Medical Sciences, Tehran, Iran.
Toraj
Kamaly
Torajkamaly@gmail.com
10031947532846003756
10031947532846003756
No
Bone and Joint Reconstruction Research Center, Shafa Orthopedic Hospital, Iran University of Medical Sciences, Tehran, Iran.
Amir
Aghaie Aghdam
amir.aghdam.2012@gmail.com
10031947532846003757
10031947532846003757
Yes
Bone and Joint Reconstruction Research Center, Shafa Orthopedic Hospital, Iran University of Medical Sciences, Tehran, Iran.