When Do You Need a CT Scan? Common Reasons Explained

CT scans (Computed Tomography) are among the most commonly ordered imaging studies. They're fast, detailed, and can diagnose a wide range of conditions.

What Is a CT Scan?

A CT scan uses X-rays taken from multiple angles, combined by a computer into detailed cross-sectional images — like hundreds of X-ray slices viewed from any direction.

Common Reasons for CT Scans

Head Injuries and Neurological Symptoms Head CT quickly detects bleeding in or around the brain, skull fractures, stroke, and tumors.

Abdominal and Pelvic Pain CT is excellent for diagnosing appendicitis, kidney stones, bowel obstruction, diverticulitis, and abdominal masses.

Chest and Lung Conditions Chest CT detects pneumonia, blood clots in the lungs (pulmonary embolism), lung nodules, and aortic aneurysms.

Trauma and Injuries After accidents, CT quickly assesses internal bleeding, organ damage, spinal fractures, and multiple injuries at once.

Cancer Staging CT helps find tumors, determine if cancer has spread, monitor treatment response, and guide biopsies.

CT vs. MRI

CT is better for: bone detail, bleeding, lung imaging, and fast emergency situations. MRI is better for: soft tissue, brain/spine, joint injuries, and zero radiation exposure.

What to Expect

Most CT scans take 10-30 minutes. You'll lie on a table that moves through a donut-shaped scanner (open on both ends). You may receive IV contrast to highlight certain structures.

Same-day CT appointments available. Call (727) 398-5999.