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Static and dynamic CT imaging of the cervical spine in patients with rheumatoid arthritis
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Radiology, Oncology and Radiation Science, Radiology.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Radiology, Oncology and Radiation Science, Radiology.
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2015 (English)In: Skeletal Radiology, ISSN 0364-2348, E-ISSN 1432-2161, Vol. 44, no 2, 241-248 p.Article in journal (Refereed) Published
Abstract [en]

OBJECTIVE:

To compare CR with CT (static and dynamic) to evaluate upper spine instability and to determine if CT in flexion adds value compared to MR imaging in neutral position to assess compression of the subarachnoid space and of the spinal cord.

MATERIALS AND METHODS:

Twenty-one consecutive patients with atlantoaxial subluxation due to rheumatoid arthritis planned for atlantoaxial fusion were included. CT and MRI were performed with the neck in the neutral position and CT also in flexion. CR in neutral position and flexion were obtained in all patients except for one subject who underwent examination in flexion and extension.

RESULTS:

CR and CT measurements of atlantoaxial subluxation correlated but were larger by CR than CT in flexion, however, the degree of vertical dislocation was similar with both techniques irrespective of the position of the neck. Cervical motion was larger at CR than at CT. The spinal cord compression was significantly worse at CT obtained in the flexed position as compared to MR imaging in the neutral position.

CONCLUSIONS:

Functional CR remains the primary imaging method but CT in the flexed position might be useful in the preoperative imaging work-up, as subarachnoid space involvement may be an indicator for the development of neurologic dysfunction.

Place, publisher, year, edition, pages
2015. Vol. 44, no 2, 241-248 p.
National Category
Radiology, Nuclear Medicine and Medical Imaging Orthopedics
Identifiers
URN: urn:nbn:se:uu:diva-233725DOI: 10.1007/s00256-014-2000-9ISI: 000346904500010PubMedID: 25227660OAI: oai:DiVA.org:uu-233725DiVA: diva2:753836
Available from: 2014-10-09 Created: 2014-10-09 Last updated: 2017-12-05Bibliographically approved

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Söderman, TomasOlerud, ClaesShalabi, AdelSundin, Anders

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