MR

MR or Magnetic Resonance is a powerful imaging technique often used in the field of medicine. It is a non-invasive method that uses a large magnet and radio waves to generate detailed images of the body's internal structures.

Overview

Magnetic Resonance Imaging (MRI) is a type of imaging that uses magnetic fields and radio waves to produce detailed images of the body's internal structures. It is often used to diagnose and monitor a variety of medical conditions, including cancer, heart disease, and neurological disorders. Unlike X-ray and CT scan, MRI does not use ionizing radiation.

History

The development of MRI began in the early 20th century with the discovery of nuclear magnetic resonance (NMR). However, it was not until the 1970s that the first MRI scans of the human body were performed. The technology has since evolved and improved, becoming a vital tool in modern medicine.

Procedure

During an MRI scan, the patient lies on a table that slides into a large, cylindrical machine. The machine generates a strong magnetic field that aligns the protons in the body. Radio waves are then sent into the body, which knock the protons out of alignment. When the radio waves are turned off, the protons realign and send out signals that are picked up by the machine and turned into images.

Risks and Safety

While MRI is generally considered safe, there are some risks associated with the procedure. These include potential reactions to the contrast material used in some scans, as well as the risk of injury from metal objects being pulled toward the magnet. Patients with certain types of medical implants may not be able to undergo an MRI.

Applications

MRI is used in a wide range of medical applications, including the diagnosis and monitoring of diseases and conditions such as cancer, heart disease, neurological disorders, and musculoskeletal problems. It is also used in research to study the structure and function of the body on a detailed level.

See Also

• Computed Tomography
• Ultrasound
• Radiology
• Nuclear Medicine

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