Mayo Clinic Health Manager
Get free personalized health guidance for you and your family.
Get StartedWhy it's done
By Mayo Clinic staffYour doctor may recommend a CT scan to help:
- Diagnose muscle and bone disorders, such as bone tumors and fractures
- Pinpoint the location of a tumor, infection or blood clot
- Guide procedures such as surgery, biopsy and radiation therapy
- Detect and monitor diseases such as cancer or heart disease
- Detect internal injuries and internal bleeding
CT scans can be done even if you have a pacemaker or an internal cardioverter defibrillator (devices implanted in your chest to help regulate your heartbeat). However, if you're pregnant or suspect you might be, tell your doctor. Your doctor may suggest postponing the procedure or choosing an alternative exam that doesn't involve radiation, such as an ultrasound or MRI.