CT Scan

CT Scan (Computed Tomography)

A CT Scan (Computed Tomography) is an advanced diagnostic imaging test that uses X-ray technology and computer processing to create detailed cross-sectional images of the body. CT scans provide more precise and comprehensive information than standard X-rays, allowing physicians to examine organs, bones, blood vessels, and soft tissues with high accuracy.

CT imaging is widely used in emergency medicine, oncology, cardiology, neurology, and general diagnostics.

Purpose of a CT Scan

A CT scan is performed to:

detect internal injuries, bleeding, or fractures;

diagnose tumors, infections, or inflammatory conditions;

evaluate organs such as the brain, lungs, liver, kidneys, and intestines;

assess blood vessels and identify blockages or aneurysms;

guide biopsies, surgeries, and other medical procedures;

monitor disease progression or response to treatment;

support rapid diagnosis in emergency situations.

Common Types of CT Scans

CT imaging may include:

CT of the Brain – evaluation of stroke, trauma, or neurological disorders;

Chest CT – assessment of lungs, heart, and mediastinum;

Abdominal and Pelvic CT – evaluation of digestive and urinary organs;

CT Angiography (CTA) – detailed imaging of blood vessels;

Spine and Musculoskeletal CT – assessment of bones and joints.

How the CT Scan Is Performed

The patient lies on a motorized examination table.

The table moves through the CT scanner, which is a large, ring-shaped machine.

The scanner takes multiple X-ray images from different angles.

In some cases, a contrast agent may be administered orally or intravenously to enhance image clarity.

The patient may be asked to remain still or briefly hold their breath.

The procedure usually takes 10–30 minutes, depending on the type of scan.

Benefits of CT Imaging

fast and highly accurate diagnostic results;

detailed cross-sectional and 3D images;

effective for emergency and complex cases;

non-invasive and painless;

widely available and reliable.

Preparation for a CT Scan

Preparation depends on the type of CT scan and may include:

fasting for several hours if contrast is used;

removing metal objects such as jewelry or accessories;

informing the provider about allergies, kidney conditions, or pregnancy;

drinking contrast solution if required for abdominal imaging.

Safety and Radiation Considerations

CT scans involve exposure to a controlled amount of radiation. Safety measures include:

use of the lowest effective radiation dose;

modern equipment that minimizes exposure;

careful assessment of benefits versus risks, especially for children and pregnant patients;

cautious use of contrast agents when indicated.

Results

After the CT scan, patients receive:

high-resolution digital images;

a detailed radiology report interpreted by a specialist;

recommendations for further tests, treatment, or follow-up care if needed.