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Occipitocervical measurements: correlation and consistency between multi-positional magnetic resonance imaging and dynamic radiographs.
- Source :
- European Spine Journal; Nov2020, Vol. 29 Issue 11, p2795-2803, 9p, 2 Black and White Photographs, 2 Charts
- Publication Year :
- 2020
-
Abstract
- Purpose: To evaluate the reliability and validity of the multi-positional magnetic resonance imaging in measuring occipitocervical parameters using the standard cervical dynamic radiographs as a reference. Methods: Patients were included if they underwent both dynamic radiograph and cervical multi-positional MRI within a 2-week interval from January 2013 to December 2016. Twelve occipitocervical parameters were measured on both image modalities in all positions (neutral, flexion and extension): Posterior Atlanto-Dental Interval, Anterior Atlanto-Dental Interval (AADI), Dens-to-McRae distance, Dens-to-McGregor distance, Occipito-atlantal Cobb angle (C01 angle), Occipito-axis Cobb angle (C02 Cobb angle), Atlas-axis Cobb angle (C12 angle), Redlund-Johnell, Modified Ranawat, Clivus canal angle, Occiput inclination, and Occiput cervical distance. Pearson correlation and linear regression analysis were used to evaluate the correlation of both modalities for each parameter. A p value of < 0.05 was considered statistically significant. Results: Cervical images of 70 patients were measured and analyzed. There was a significant positive correlation between dynamic X-ray and multi-positional MRI for all parameters (p < 0.05) except AADI. Dens-to-McGregor distance and Redlund-Johnell parameter demonstrated a very strong correlation in the neutral position (r = 0.72, r = 0.79 respectively) and moderate to very strong correlation(r > 0.4) for Modified Ranawat, Clivus canal angle, C02 Cobb angle and C02 distance in all neck position. The intra-class correlation (ICC) of intra- and inter-observer showed good to excellent reliability, and ICCs were 0.67–0.98. Conclusions: Multi-positional MRI can be a reliable imaging option for diagnosis of occipitocervical instability or basilar invagination compared to standard dynamic radiographs. [ABSTRACT FROM AUTHOR]
- Subjects :
- RADIOGRAPHS
Subjects
Details
- Language :
- English
- ISSN :
- 09406719
- Volume :
- 29
- Issue :
- 11
- Database :
- Complementary Index
- Journal :
- European Spine Journal
- Publication Type :
- Academic Journal
- Accession number :
- 146931265
- Full Text :
- https://doi.org/10.1007/s00586-020-06415-6