Tag: radio waves

How is a CT scan different from MRI?

With the advancement in technology, modern medicine has advanced beyond x-rays. The most widely used tests besides x-rays are Computed Tomography (CT) scan and Magnetic Resonance Imaging (MRI). But it is quite natural to get confused between two because in both the cross-sectional pictures of the body is shown but the procedure and technique to carry this out is where the difference lies. In both of them the patient is made to rest on a table that slides through the middle of the machine to obtain images of a particular body part. Read on to know the tale of two scans


Computed Tomography (CT) Scan

CT scan uses rotating x-rays to obtain images of the desired body part. In this type of scan the x-ray tube spin around the person placed on the table and the x-ray detector is placed on the exact opposite side of the patient.

A CT Scan can provide complete information about the body, including the chest (lungs and heart), head (inner ear, eyes, brain and its vessels), skeletal system (spine, shoulders and neck), bladder, pelvis and hips, gastrointestinal tract, reproductive system. This scan is commonly used in emergencies as this scan does not take much time and the whole procedure generally takes fewer than 5 minutes.

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Magnetic Resonance Imaging (MRI)

Unlike CT scan in which x-rays is used, MRI Scan uses radio frequency pulses and powerful magnetic fields. This scan produces detailed and complete images of body parts and organs. MRI Scan is best suited for producing detailed pictures of tendon tissues and examining soft tissues in ligament, brain tumor etc. The cost of MRI scan is generally more than that of CT scan.