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Computed Tomography

 
CT imaging has most commonly been used for diagnosing diseases of the brain, nasal and sinus cavities, orbit, mediastinum, lung, liver, adrenal gland, elbow joint, and spine. Although CT is a noninvasive imaging technique, ionized radiation from the x-ray tube is produced.
 
Computed tomography uses a computer to mathematically reconstruct a cross-sectional image of the body area from measurements of x-ray transmission through thin slices of patient tissue. In the machine, a narrow, collimated beam of x-rays is generated on one side of the patient. Sensitive detectors on the opposite side of the patient measure the amount of x-ray transmission through a tissue slice of the patient. These measurements are repeated many times from different directions as the x-ray tube rotates around the patient.
 
Indications (preferred) for this procedure :
By Body Region
  
Abdomen
 
  • Upper urinary tract evaluation - ectopic ureter, renal/ureteral calculus
     
  • Clarification and surgical planning of large organ masses - hepatic, splenic, renal, intestinal
     
  • Clarification of known or suspected portosystemic shunt
Cardiovascular
 
  • Pulmonary embolism
Central Nervous System - Brain
 
  • Skull trauma with suspected fracture
  • Acute intracranial trauma in critical, unstable patient
Central Nervous System - Spine
 
  • Vertebral fractures
Joints, Musculoskeletal
 
  • Evaluation of elbow dysplasia
  • Suspected incomplete ossification of the humeral condyles (spaniel breeds)
  • Complex fractures, including pelvis
Nasal Cavity
 
  • Chronic nasal discharge, chronic sneezing, nasal cavity distortion, suspected nasal mass
Orbits
 
  • Orbital trauma with fracture
Other Head and Neck
 
  • Dental-based mass
  • Other head/skull trauma with suspected fractures
Thorax
 
  • Metastasis screening
  • Primary lung mass(es)
  • Pneumothorax
  • Lung consoldation, chronic pneumonia
  • Pleural effusion
  • Mediastinal disease
By Non-Body Region
Cancer
 
  • Lung metastasis screening
 


 


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