Computerized Tomography

All procedures will be performed by a registered Radiology Technologist and interpreted by our board certified and state licensed Radiologist. CT equipment meets all local, state and federal requirements. CDI can provide CT services at any facility that does not already have an electrical hook-up or pad. Oral contrast, non-contrast and intravenous contrast procedures are available upon request.

Procedures offered:

  • Abdomen with contrast
  • Brain/Head
  • Chest
  • Extremities
  • Liver
  • Neck (Soft Tissue)
  • Orbits
  • Pelvis with contrast
  • Spine - Cervical
  • Spine - Lumbar
  • Spine - Thoracic

CT PROCEDURES WITH INJECTION

Intravenous contrast is used in CT to help highlight blood vessels and to enhance the tissue structure of various organs such as the brain, spine, liver and kidneys. "Intravenous" means that the contrast is injected into a vein using a small needle. Some imaging exams of the abdomen and gastrointestinal system use both the intravenous x-ray dye (called Ultravist) and orally administered barium contrast for maximum sensitivity.

The intravenous CT contrast is clear like water and has a similar consistency. It is typically packaged in glass bottle or vial. A sterile syringe is used to draw it from the bottle or a power injector is used to administer the contrast. Typically between 75 cc to 150 cc (about 2.5 oz to 5 oz) of contrast is used depending upon the patient, age, weight, area being imaged and cardiovascular health.

A small needle is first placed into a vein in the hand or arm by the nurse and held in place with tape or a strap. Once the needle is in place, the vein is flushed with saline solution. Typically the contrast is loaded into a power-assisted injector, which injects the CT contrast using tubing through the needle into the body during a specific period in the CT exam. The injection is fully under the control of the technologist. The injector is either mounted on a small trolley or hung from a ceiling mounted suspension next to the CT scanner. The contrast may also be hand injected using a large syringe connected to the needle via tubing.

Millions of intravascular X-ray dye injections for medical imaging examinations are given safely each year in North America. CDI currently uses the safest possible x-ray dye (called Ultravist), but adverse reactions may occur. Mild reactions such as nausea, vomiting and skin hives occur in 1% to 3% of patients. Severe adverse reactions are very rare, occurring in 1 of 6250 examinations using nonionic contrast material. Fatal reactions may occur in 1 of 100,000 patients.