What is a CT scan of the spine?

• Computed tomography is an imaging test that uses X-rays and a computer to make detailed images of the body. A CT scan shows details of the bones, muscles, fat, and organs. CT scans are more detailed than standard X-rays.
• In a CT scan, an X-ray beam moves in a circle around the body. This allows many different views of the same organ or structure. The X-ray information is sent to a computer that interprets the X-ray data and displays it in a 2-D form on a monitor.
• CT scans may be done with or without "contrast." Contrast refers to a substance taken by mouth or injected into an IV (intravenous) line that causes the particular organ or tissue under study to show up more clearly on the scan.
• CT scans of the spine can provide more detailed information about the bones of the spine (vertebrae), the disks between the vertebrae, and other spinal structures and tissues than standard X-rays of the spine. CT scans can give healthcare providers more information related to injuries or diseases of the spine.

Why do I need a Spine CT scan?

A CT scan of the spine may be used to check the spine for:
• Assess spine fractures due to injury.
• Evaluate the spine before and after surgery.
• Accurately measure bone density and predict possible fractures likely to occur in osteoporosis patients.
• Guide diagnostic procedures such as biopsy or remove fluid from localized infections (abscess).
• A herniated disc and lower back pain.
• Tumors or other lesions.
• Structural problems such as spina bifida. This is a problem with the spine a person is born with (congenital).
• Blood vessel problems.
• Infections.
• A CT scan may be done when another type of exam such as an X-ray, MRI, or physical exam doesnt give enough information.
• A CT of the spine may also be used to assess the effects of treatment of the spine, such as surgery or other therapy.

How to prepare for a CT scan of the Spine?

• You should wear comfortable, loose-fitting clothing to your exam.
• Metal objects, including jewelry, eyeglasses, dentures and hairpins should be left at home or removed prior to your exam. You may also be asked to remove hearing aids and removable dental work. Women will be asked to remove underwire containing metal.
• Women should always inform their physician and the CT technologist if there is any possibility that they may be pregnant.
• You should inform your doctor of all medications you are taking and if you have any allergies.
• Inform your doctor of any recent illnesses or other medical conditions and whether you have a history of heart disease, asthma, and diabetes or kidney disease.

In case of contrast Examinations:
• You should not to eat or drink anything (fasting) for a few hours (4 to 6 h) before the exam, and do renal function test, inform your doctor or radiology technician if you have any allergies or kidney diseases.