Magnetic resonance imaging (MRI) is an imaging technique that brings a
new dimension to viewing and evaluating equine head and limb abnormal
ities MRI is becoming increasingly available for clinical imaging of l
arge and small animals. MRI uses the magnetic properties of tissues to
create high resolution images. Currently MR imaging of equine patient
s is limited to anatomical regions which can fit into the imaging gant
ry and extend into the magnet's center. No adverse biological effects
have been reported with MRI, although certain metals, such as horsesho
es and medical implants containing ferrous metal, cannot be within the
magnetic field. MRI offers its greatest clinical applications in the
detection of soft tissue and cartilage abnormalities. MRI is likely to
become a diagnostic imaging tool of choice for many equine limb disor
ders as MRI systems become more widely available to the equine clinici
an.