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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 | | | | | Central Nervous System - Brain | | | - Skull trauma with suspected fracture
- Acute intracranial trauma in critical, unstable patient
| | Central Nervous System - Spine | | | | | 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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