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Healthy Living
Physicians commonly use diagnostic imaging techniques in an effort to figure out what’s causing pain or illness in their patients. X‐rays, CT Scans, and MRIs are three different types of imaging. Here is how they differ, according to North Central Surgical Hospital in Dallas.
When you undergo an X‐ray, a small amount of radiation passes through your body in order to capture an image quickly. X‐rays are good for determining the extent of an injury like a fracture or dislocation. They also help diagnose infections, tumors, and bone degeneration. Hard objects, such as bones, appear white on the X‐ray image, allowing radiologists to see any abnormalities.
A computed tomography scan (CT scan) combines the power of X‐rays with computers in order to produce a 360‐degree view of the body. The procedure takes from 5 to 20 minutes and is completely painless. Through the use of cross‐sectional views, it is able to capture images of soft tissue, blood vessels, and bone — all at the same time. Through these images, radiologists are able to make a number of diagnoses, including lung and chest problems, cancers, tumors, and internal injuries. Claustrophobic patients sometimes have trouble lying still inside the slim tube design of the CT scan.
Magnetic Resonance Imaging (MRI) combines a magnetic field with radio waves and an advanced computer system to produce pictures of soft tissues, organs, bones, and other internal body parts. An MRI normally lasts from 30 minutes to an hour. Like a CT scan, an MRI takes images of cross‐sections of the body in order to produce the most detailed picture possible. Because it uses a magnetic field, MRIs are normally not recommended for patients with metal implants.