MRI

Authors: Ann Carstens, Robert M. Kirberger, Mark Velleman, Leif E. Dahlberg, Lizelle Fletcher and Eveliina Lammentausta
Journal: Veterinary Radiology and Ultrasound

Osteoarthritis of the metacarpo/metatarsophalangeal joints is one of the major causes of poor performance in horses. Delayed gadolinium-enhanced magnetic resonance imaging of cartilage (dGEMRIC) may be a useful technique for noninvasively quantifying articular cartilage damage in horses. The purpose of this study was to describe dGEMRIC characteristics of the distal metacarpus3/metatarsus3 (Mc3/Mt3) articular cartilage in 20 cadaver specimens collected from normal Thoroughbred horses.

Category: Cartilage - Equine - MRI
Authors: E. Cillán-García, P. I. Milner, A. Talbot, R. Tucker, F. Hendey, J. Boswell, R. J. M. Reardon, S. E. Taylor
Journal: The Veterinary Record

The type and location of deep digital flexor tendon (DDFT) lesions may be important in predicting outcome. The objectives of this study were to determine the frequency of different types of DDFT lesions within the hoof capsule and to determine whether lesion type predicts return to athletic activity. Lesions of the DDFT were divided into: core lesions, dorsal border lesions and parasagittal splits. Lesion location was documented, and follow-up information was obtained by telephone survey at least 18 months after diagnosis.

Category: Equine - MRI - Tendon
Authors: M. Biggi, S. Dyson
Journal: Equine Veterinary Journal

Reasons for performing study

The distribution of lesions detected using magnetic resonance imaging (MRI) of hind feet has not been reported.
Objective

To evaluate type and distribution of lesions detected using MRI in hind feet of lame horses and to compare the findings with those reported in front feet; to document follow-up information.
Methods

Category: Equine - Lameness - MRI
Authors: A. Lempe-Troillet, E. Ludewig, W. Brehm, K.-D. Budras, K. Winter, J. Edinger
Journal: Veterinary and Comparative Orthopaedics and Traumatology

Objectives: The object of this study was to describe previously defined soft tissue structures by using spin and gradient sequences in a 0.5 Tesla magnetic resonance system in order to improve the characterisation of tendon and ligaments at the plantar region of the equine tarsus and metatarsus while considering possible age-related variations. Methods: Cadaveric hindlimbs from twenty-two Warmblood horses with an age range from one month to twenty-five years were examined in spin and gradient echoes.

Category: Equine - MRI
Authors: Sarah N. Gray, Sarah M. Puchalski and Larry D. Galuppo
Journal: Veterinary Radiology & Ultrasound

Injuries of the intercarpal ligaments are an important cause of lameness in performance horses. The purpose of this prospective cadaver study was to determine whether computed tomography (CT) arthrography would be a feasible method for visualizing and characterizing intercarpal ligaments in the horse. One cadaver limb from each of eight nonlame horses was collected immediately after euthanasia. For each limb, overlapping 2.0 mm CT images were acquired before and after injection of iodinated contrast medium into the antebrachiocarpal joint, middle carpal joint, and carpal sheath.

Category: Equine - Ligament - MRI
Authors: B. Black, N. C. Cribb, S. G. Nykamp, J. J. Thomason and D. R. Trout
Journal: Equine Veterinary Journal

Summary

Reasons for performing study

Artefacts caused by regional anaesthesia can influence image interpretation of ultrasonography and nuclear scintigraphy. Perineural and intrasynovial anaesthesia are commonly performed prior to magnetic resonance imaging (MRI); and the effects on MR images, if any, are unknown.

Objectives

To determine if perineural and intrasynovial anaesthesia of structures in the equine foot cause iatrogenic changes detectable with MRI.

Methods

Category: Equine - Local analgesia - MRI
Authors: A. J. Daniel, C. E. Judy and T. Saveraid
Journal: Equine Veterinary Education

Injection of local anaesthetic solution around the palmar nerves at the base of the proximal sesamoid bones is typically considered to desensitise structures distal to this location. There has been recent research investigating the potential for proximal diffusion of local anaesthetic solution resulting in desensitisation of structures other than those intended.

Category: Case study - Equine - MRI
Authors: Ann Carstens, Robert M. Kirberger, Leif E. Dahlberg, Leon Prozesky, Lizelle Fletcher and Eveliina Lammentausta
Journal: Veterinary Radiology and Ultrasound

The purpose of this study was to determine whether delayed gadolinium-enhanced magnetic resonance imaging of cartilage (dGEMRIC) and T2 mapping are accurate techniques for measuring cartilage thickness in the metacarpus3/metatarsus3 (Mc3/Mt3) of Thoroughbred racehorses. Twenty-four Mc3/Mt3 cadaver specimens were acquired from six healthy racehorses.

Category: Cartilage - Equine - Imaging - MRI
Authors: Imke Janssen, Jan-Hein Swagemakers, Marc Koene, Christoph Lischer
Journal: Journal of Equine Veterinary Science

This case report demonstrates the development and management of an osseous cyst-like lesion in the spongiosa of the navicular bone in a high-level show jumper with chronic intermittent forelimb lameness. The first evidence of navicular bone pathology was increased signal intensity on fat-suppressed images in the medulla of the right navicular bone, which progressed to a cystic lucency identified on radiographs at 24 months.

Category: Bone - Case study - Equine - MRI
Authors: Julien Olive, DMV, MSc; Thibault Vila, DMV; Nicolas Serraud, DMV
Journal: American Journal of Veterinary Research

Objective—To compare navicular bone marrow lesion (BML) conspicuity in the feet of horses as determined via 2 fat-suppressed MRI techniques, including standard short tau inversion recovery (STIR) and inversion recovery gradient echo (IRGE).

Sample—Feet (n = 150) of horses with lameness referable to the distal portion of the digit.

Category: Bone - Equine - Imaging - MRI