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Magnetic Resonance Imaging

Magnetic resonance imaging is a technique that provides a noninvasive digitized anatomic image by means of magnetic fields and radio waves. MRI is based on the ability of a few protons within the body to absorb and emit radiowave energy when the body is placed within a strong magnetic field. Different tissues absorb and release radiowave energy at different, detectable, and characteristic rates. The changes in cellular orientation within the body are detected, analyzed, and reconstructed as images by a computer.
The image produced with MRI provides outstanding soft-tissue contrast. Superior differentiation within the soft tissues of the body enable visualization of cartilage, tendons, muscle, and ligaments as well as identifying differences within the soft tissues of all internal organs, including the spinal cord, heart, lung, abdominal viscera, and the white and gray matter of the brain.
Indications (preferred) for this procedure :
By Body Region
  • Identification of small organ masses - adrenal, pancreatic, lymph nodes
  • Clarification and surgical planning of large organ masses - hepatic, splenic, renal, intestinal
  • Pericardial effusion, suspected pericardial masses
  • Suspected large vessel thrombosus (aorta, vena cava, or portal)
Central Nervous System - Brain
  • Suspected brain disorders - seizures, cranial nerve signs, vestibular disease, ataxia, head tilt, behavioral changes, central blindness, pituitary disease, metastatic disease, congenital anomalies, head trauma with neurologic signs
Central Nervous System - Spine
  • Spinal cord - acute or progressive tetraparesis or hindlimb paresis, CP deficits, spinal pain, spinal trauma, congenital anomalies, discospondylitis, recurrence of postoperative disc disease.
Joints, Musculoskeletal
  • Pain/lameness localized to any appendicular joint (ligaments, tendons, menisci, cartilage, bone, effusions)
  • Evaluation of bone neoplasia pre-surgery
Nasal Cavity
  • Chronic nasal discharge, chronic sneezing, nasal cavity distortion, suspected nasal mass
  • Exophthalmos, pain on opening mouth, suspected retrobulbar masses, optic nerve disease
Other Head and Neck
  • Soft tissue masses or swelling of unknown origin, lymphadenopathy, salivary gland, laryngeal, suspected mandibular or maxillary masses, thyroid masses
  • Chronic ear disease, head tilt
Peripheral Nervous System
  • Suspected peripheral nerve neoplasia - progressive single limb muscle atrophy or pain.
By Non-Body Region
  • Soft tissue mass evaluation, especially for surgical planning
  • Body metastatic screening
  • Body lymph node and marrow evaluation
  • Suspected foreign bodies
  • Chronic draining tracts


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