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Magnetic resonance imaging of the ligamentous structures of the occipitoatlantoaxial region in the dog.
- Source :
-
Veterinary radiology & ultrasound : the official journal of the American College of Veterinary Radiology and the International Veterinary Radiology Association [Vet Radiol Ultrasound] 2012 Sep-Oct; Vol. 53 (5), pp. 545-51. Date of Electronic Publication: 2012 Jun 25. - Publication Year :
- 2012
-
Abstract
- Our objectives were to establish a magnetic resonance (MR) protocol for the examination of, and then describe, the normal ligaments and the supporting structures of the occipitoatlantoaxial region. This was done in 10 cadaver dogs. In addition, MR images of three patients with cervical pain localized to the occipitoatlantoaxial region are included to provide examples of ligamentous abnormalities. All ligaments were hypointense in all pulse sequences. The apical, dorsal atlantoaxial, and dorsal longitudinal vertebral ligaments were seen best in the sagittal T1W and PD-weighted images. The transverse ligament was best visualized in the transverse plane in all pulse sequences and appeared to be confluent with the dorsal longitudinal vertebral ligament dorsal to the dens in the sagittal plane. A 20° dorsal plane reconstructed image in 0.6-mm slice thickness was necessary to visualize the alar ligaments, which were visible in 9/10 dogs. The dorsal longitudinal vertebral ligament appeared continuous with the apical ligament and tectorial membrane. Abnormalities in clinically affected dogs included thickening of the alar ligaments, absence of transverse ligament and elongation, and irregularity of the apical ligament.<br /> (© 2012 Veterinary Radiology & Ultrasound.)
- Subjects :
- Animals
Atlanto-Axial Joint pathology
Atlanto-Occipital Joint pathology
Humans
Ligaments, Articular pathology
Neck Pain pathology
Atlanto-Axial Joint anatomy & histology
Atlanto-Occipital Joint anatomy & histology
Dogs anatomy & histology
Ligaments, Articular anatomy & histology
Magnetic Resonance Imaging veterinary
Subjects
Details
- Language :
- English
- ISSN :
- 1058-8183
- Volume :
- 53
- Issue :
- 5
- Database :
- MEDLINE
- Journal :
- Veterinary radiology & ultrasound : the official journal of the American College of Veterinary Radiology and the International Veterinary Radiology Association
- Publication Type :
- Academic Journal
- Accession number :
- 22730919
- Full Text :
- https://doi.org/10.1111/j.1740-8261.2012.01960.x