Determination of cutoff values on computed tomography and magnetic resonance images for the diagnosis of atlantoaxial instability in small-breed dogs.

ABSTRACT:

Objective

To determine cutoff values for the diagnosis of atlantoaxial instability (AAI) based on cross-sectional imaging in small-breed dogs.

Study design

Retrospective multicenter study.

Sample population

Client-owned dogs (n = 123) and 28 cadavers.

Methods

Dogs were assigned to three groups: a control group, a "potentially unstable" group, and an AAI-affected group, according to imaging findings and clinical signs. The ventral compression index (VCI), cranial translation ratio (CTR), C1-C2 overlap, C1-C2 angle, atlantoaxial distance, basion-dens interval, dens-to-axis length ratio (DALR), power ratio, and clivus canal angles were measured on CT or T2-weighted magnetic resonance (MR) images. Receiver operating characteristic (ROC) analysis was performed to de

SUBMITTER: Planchamp B 

PROVIDER: S-EPMC9311214 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature