Pathological findings in low-field magnetic resonance imaging of the canine spine – a study of 112 patients

2017 ◽  
Vol 20 (2) ◽  
pp. 285-291
Author(s):  
P. Holak ◽  
J. Głodek ◽  
M. Mieszkowska ◽  
M. Jałyński ◽  
Y. Zhalniarovich ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Intervertebral Disc ◽  
Contrast Medium ◽  
Spin Echo ◽  
Pathological Changes ◽  
Resonance Imaging ◽  
Intervertebral Disc Disease ◽  
Disc Disease ◽  
Low Field

Abstract Magnetic resonance imaging (MRI) is a method of choice in diagnosing nervous system disorders. This paper presents the results of a study where selected segments of the canine spine were examined by low-field MRI in 112 patients. Images of pathological changes were obtained in spin echo (SE), fast spin echo (FSE) and hybrid contrast enhancement (3D HYCE) sequences. The cervical region of the spinal cord (C1-C5) was examined in 32 patients, the cervicothoracic region (C6-Th2)- in 14 patients, the thoracolumbar region (Th3-L3) – in 23 patients, and the lumbosacral region (L4-S3) – in 43 patients. The results were used to determine the incidence of pathological changes in different sections of the canine spine, such as intervertebral disc disease (IDD), disc desiccation, syringomyelia and changes characterized by higher uptake of the contrast medium. Intervertebral disc disease was diagnosed in 52.7% of patients and it was the most common abnormality. Disc dehydratation without protrusion or extrusion was noted in 23.2% of animals. Pathological changes with increased uptake of the contrast medium and indicative of neoplastic growth were observed in 13.4% of patients and syringomyelia was diagnosed in 9.82% of the examined animals. The proposed sequences revealed the presence of above abnormalities.

Agreement between magnetic resonance imaging, myelography, and surgery for detecting recurrent, thoracolumbar intervertebral disc extrusion in dogs

2013 ◽  
Vol 26 (01) ◽  
pp. 12-18 ◽  
Author(s):  
B. A. Brisson ◽  
S. G. Nykamp ◽  
D. Reynolds
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Intervertebral Disc ◽  
Interobserver Agreement ◽  
Surgical Decompression ◽  
Diagnostic Methods ◽  
Resonance Imaging ◽  
Disc Disease ◽  
Recurrent Lesion ◽  
Magnetic Resonance Imaging Mri

Summary Objectives: Although magnetic resonance imaging (MRI) is reported to be superior to myelography to determine the location and site of first time disc herniation, comparison of these diagnostic methods in cases of recurrent intervertebral disc disease (IVD) herniation after a first surgery has not been evaluated. The objective was to compare the diagnostic accuracy of MRI and myelography in a series of dogs undergoing repeat surgical decompression for recurrent IVD extrusion when compared to the gold standard of surgery. Methods: Ten dogs with recurrent IVD herniation underwent MRI and myelography followed by surgical decompression. Three observers reviewed the images to determine the site and side of the first surgery and the recurrent lesion. Agreement was determined by calculating a kappa (κ) score. Results: Substantial interobserver agreement was noted for recurrent lesion site using MRI and myelography (κ = 0.77 vs. 0.73) and when comparing MRI and myelography to the reported surgical site (κ = 0.73 vs. 0.67). Interobserver agreement was greater with MRI for circumferential location compared to myelography (κ = 0.76 vs. 0.43), similar to what was found when comparing to surgical side (κ = 0.82 vs. 0.49). The previous surgical site in this study had no effect on ability to identify the new lesion. Clinical significance: Despite the limitations of MRI, there was greater agreement between observers using MRI for both the recurrent and first lesion.

A comparison of magnetic resonance imaging sequences in evaluating pathological changes in the canine spinal cord

2011 ◽  
Vol 14 (3) ◽  
pp. 481-484 ◽  
Author(s):  
Z. Adamiak ◽  
A. Pomianowski ◽  
Y. Zhalniarovich ◽  
M. Kwiatkowska ◽  
M. Jaskólska ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Spinal Cord ◽  
Magnetic Resonance ◽  
Spin Echo ◽  
Fast Spin Echo ◽  
Spinal Diseases ◽  
Pathological Changes ◽  
Resonance Imaging ◽  
Scanning Time ◽  
Magnetic Resonance Imaging Mri

A comparison of magnetic resonance imaging sequences in evaluating pathological changes in the canine spinal cord This paper discusses 28 canine patients subjected to low-field magnetic resonance imaging (MRI) of the spinal cord for neurological indications. The authors describe and compare the used MRI sequences with an indication of the most effective sequences in MRI examinations that require short scanning time. The most effective sequences supporting a quick diagnosis of spinal diseases in dogs were SE (spin echo), FSE (fast spin echo) and 3D HYCE (hybrid contrast enhancement).

scholarly journals ‘Benign Thoracic Pain’ Syndrome: Role of Magnetic Resonance Imaging in the Detection and Localization of Thoracic Disc Disease

1989 ◽  
Vol 82 (2) ◽  
pp. 81-83 ◽  
Author(s):  
F E Bruckner ◽  
A Greco ◽  
A W L Leung
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Intervertebral Disc ◽  
Thoracic Spine ◽  
Imaging Modality ◽  
Pain Syndrome ◽  
Resonance Imaging ◽  
Disc Disease ◽  
Thoracic Pain ◽  
Thoracic Disc

The syndrome of ‘benign thoracic pain’ is seen in young women who have pain and tenderness in the mid-thoracic spine radiating around the chest and aggravated by spinal movement. Ten consecutive patients with this syndrome and 15 controls were evaluated with magnetic resonance imaging (MRI). This showed thoracic intervertebral disc dehydration with no associated prolapse in 90% of the patients and 13% of the controls. We postulate that the clinical features are due to impaired shock absorption of these degenerate discs rather than direct compression of surrounding structures. MRI is non-invasive and does not use ionizing radiation; it allows direct visualization of the entire thoracic spine and cord, and accurate detection of early disc degeneration. Thus, it is the imaging modality of choice for defining the subtle intervertebral disc abnormalities that characterize the ‘benign thoracic pain’ syndrome.

scholarly journals Low-field magnetic resonance imaging of changes after femoral osteosynthesis failure: a case report

2017 ◽  
Vol 62 (No. 11) ◽  
pp. 625-630
Author(s):  
J. Glodek ◽  
Z. Adamiak ◽  
M. Mieszkowska ◽  
A. Przeworski
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Hip Joint ◽  
Spin Echo ◽  
Fracture Site ◽  
Resonance Imaging ◽  
Gradient Echo ◽  
Quadriceps Femoris Muscle ◽  
Low Field ◽  
Femoris Muscle

We describe here a case study of a 16-month-old female European shorthair cat examined about 6 months after the osteosynthesis of a femoral fracture. Clinical examination revealed a non-weightbearing left limb, pain upon manipulation of the hip joint, complete immobilisation of the stifle joint and muscle atrophy in the left thigh. Low-field magnetic resonance images were acquired in sagittal, transverse and dorsal planes with T1-weighted spin echo, T2-weighted fast spin echo, T1-weighted gradient echo, gradient echo short tau inversion recovery and T1-weighted XBone sequences. Total examination time was 59 min 20 s. The obtained images revealed the presence of osteophytes on the surface of the femoral head, subluxation of the hip joint, atrophy and fatty infiltration of the quadriceps femoris muscle. The symmetry and size of callus in the fracture site were also evaluated. Based on the results of the magnetic resonance imaging exam, the patient was diagnosed with hip osteoarthritis, atrophy and fatty degeneration of the quadriceps femoris muscle with homogeneous and symmetrical distribution of callus in the fracture site. The results of this study confirm the high diagnostic value of low-field magnetic resonance imaging in diagnostics of musculoskeletal injuries in cats.

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