Tags

Type your tag names separated by a space and hit enter

Myelographic and low-field magnetic resonance imaging findings in dogs with presumptive acute hydrated non-compressive nucleus pulposus extrusion.
Vet Rec. 2017 Dec; 181(22):594-599.VR

Abstract

MRI is considered gold standard for the diagnosis of presumptive acute hydrated non-compressive nucleus pulposus extrusions (AHNCNPE). This retrospective study describes the myelographic findings in dogs with AHNCNPE diagnosed by low-field MRI and their association with neurological grade, need of surgical decompression and outcome. Forty-two myelographies (21 dogs with presumptive AHNCNPE, 21 dogs with Hansen type I disc disease herniation) were blindly evaluated. Site of herniation, compression pattern, ratio of length of the lesion to length of the second lumbar vertebra (LL:L2) and degree of spinal cord compression (SCC) were measured on the myelographies of dogs with presumptive AHNCNPE and were compared with the corresponding MRI features. Percentage of extruded volume of nucleus pulposus (VNP) was calculated on MR images. Myelographic interobserver agreement for presumptive diagnosis of AHNCNPE was almost perfect (κ=0.8). Accuracy of myelography to detect site of herniation was 80.9 per cent and to identify extradural compression was 57.1 per cent. Mean SCC was 5.8±2.6 per cent for myelography and 6.6±3 per cent for MRI. Mean LL:L2 ratio was 1.7±0.9 for myelography and 1.2±0.8 for MRI. Mean percentage of extruded VNP was 40±14 per cent, and it was positively associated with neurological grade.

Authors+Show Affiliations

Departament de Medicina i Cirurgia Animal, Facultat de Veterinà ria, Universitat Autònoma de Barcelona, Bellaterra, Spain.Departament de Medicina i Cirurgia Animal, Facultat de Veterinà ria, Universitat Autònoma de Barcelona, Bellaterra, Spain.Neurology, Hospital Veterinario Valencia Sur, Valencia, Spain.Departament de Medicina i Cirurgia Animal, Facultat de Veterinà ria, Universitat Autònoma de Barcelona, Bellaterra, Spain.Departament de Medicina i Cirurgia Animal, Facultat de Veterinà ria, Universitat Autònoma de Barcelona, Bellaterra, Spain.Departament de Medicina i Cirurgia Animal, Facultat de Veterinà ria, Universitat Autònoma de Barcelona, Bellaterra, Spain.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

29051312

Citation

Ros, Carlos, et al. "Myelographic and Low-field Magnetic Resonance Imaging Findings in Dogs With Presumptive Acute Hydrated Non-compressive Nucleus Pulposus Extrusion." The Veterinary Record, vol. 181, no. 22, 2017, pp. 594-599.
Ros C, de la Fuente C, Rodenas S, et al. Myelographic and low-field magnetic resonance imaging findings in dogs with presumptive acute hydrated non-compressive nucleus pulposus extrusion. Vet Rec. 2017;181(22):594-599.
Ros, C., de la Fuente, C., Rodenas, S., Novellas, R., Viu, J., & Aã Or, S. (2017). Myelographic and low-field magnetic resonance imaging findings in dogs with presumptive acute hydrated non-compressive nucleus pulposus extrusion. The Veterinary Record, 181(22), 594-599. https://doi.org/10.1136/vr.104201
Ros C, et al. Myelographic and Low-field Magnetic Resonance Imaging Findings in Dogs With Presumptive Acute Hydrated Non-compressive Nucleus Pulposus Extrusion. Vet Rec. 2017;181(22):594-599. PubMed PMID: 29051312.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Myelographic and low-field magnetic resonance imaging findings in dogs with presumptive acute hydrated non-compressive nucleus pulposus extrusion. AU - Ros,Carlos, AU - de la Fuente,Cristian, AU - Rodenas,Sergio, AU - Novellas,Rosa, AU - Viu,Judit, AU - Aã Or,Sonia, Y1 - 2017/10/19/ PY - 2016/11/08/received PY - 2017/08/23/revised PY - 2017/10/04/accepted PY - 2017/10/21/pubmed PY - 2017/12/7/medline PY - 2017/10/21/entrez KW - Ahnpe KW - canine KW - magnetic resonance imaging (mri) KW - myelography KW - myelopathy SP - 594 EP - 599 JF - The Veterinary record JO - Vet Rec VL - 181 IS - 22 N2 - MRI is considered gold standard for the diagnosis of presumptive acute hydrated non-compressive nucleus pulposus extrusions (AHNCNPE). This retrospective study describes the myelographic findings in dogs with AHNCNPE diagnosed by low-field MRI and their association with neurological grade, need of surgical decompression and outcome. Forty-two myelographies (21 dogs with presumptive AHNCNPE, 21 dogs with Hansen type I disc disease herniation) were blindly evaluated. Site of herniation, compression pattern, ratio of length of the lesion to length of the second lumbar vertebra (LL:L2) and degree of spinal cord compression (SCC) were measured on the myelographies of dogs with presumptive AHNCNPE and were compared with the corresponding MRI features. Percentage of extruded volume of nucleus pulposus (VNP) was calculated on MR images. Myelographic interobserver agreement for presumptive diagnosis of AHNCNPE was almost perfect (κ=0.8). Accuracy of myelography to detect site of herniation was 80.9 per cent and to identify extradural compression was 57.1 per cent. Mean SCC was 5.8±2.6 per cent for myelography and 6.6±3 per cent for MRI. Mean LL:L2 ratio was 1.7±0.9 for myelography and 1.2±0.8 for MRI. Mean percentage of extruded VNP was 40±14 per cent, and it was positively associated with neurological grade. SN - 2042-7670 UR - https://www.unboundmedicine.com/medline/citation/29051312/Myelographic_and_low_field_magnetic_resonance_imaging_findings_in_dogs_with_presumptive_acute_hydrated_non_compressive_nucleus_pulposus_extrusion_ L2 - https://veterinaryrecord.bmj.com/lookup/pmidlookup?view=long&pmid=29051312 DB - PRIME DP - Unbound Medicine ER -