COMPUTED TOMOGRAPHY (CT SCAN)
Computed tomography (CT or “Cat scan”) provides high resolution single, 2D and 3D radiographic images. This is akin to having an x-ray performed but instead of one x-ray beam it is a series of x-rays that are taken from all angles nearly simultaneous as the machine spins around the patient. CT scans are particularly useful for investigating nasal disease, head injuries or diseases, and spinal injuries. CT scans are so sensitive for picking up lesions that they can often detect pathology not apparent on conventional radiographs. It is the modality of choice for detection of pulmonary metastases and when used with contrast agents, it allows precise localization of vascular anomalies, such as portosystemic shunts. Applications include:
- Central nervous system - including but not limited to trauma, herniated intervertebral discs, tumors
- Nasal cavities and sinuses
- Thoracic cavity
- Abdominal cavity (especially portosystemic shunts)
- Ears and aural cavities
- Orthopedic uses includes fracture repair planning, evaluation of elbow diseases, and angular limb deformities.