Browse Definitions :
Definition

magnetic resonance imaging (MRI)

Magnetic resonance imaging (MRI) is a method of obtaining images of the interiors of objects, especially living things such as humans and animals. It does not use ionizing radiation such as X-ray s. Instead, it employs radio-frequency ( RF ) waves and intense magnetic field s to excite atom s in the object under evaluation. Patterns in this excitation are observed on a display. MRI can provide real-time, three-dimensional views of body organs, muscles, and joints without invasive surgery.

The MRI procedure is considered indispensible by many physicians, especially for the evaluation of sports-related injuries and for the diagnosis of chronic disease conditions. In order to properly interpret the display of an MRI, the expertise of a physician or radiologist is required. Most lay people lack the medical knowledge to properly interpret an MRI. An MRI can reveal minor damage to tendons, ligaments, and muscles. An MRI display of the heart and surrounding arteries can provide early warning of advancing coronary disease, and can help locate cancerous tumors.

The magnetic resonance phenomenon was first demonstrated in 1946 by Felix Bloch and Edward Purcell. For the first two decades after its discovery, the phenomenon was used only for the analysis of inanimate matter. It was not until the 1990s that MRI was used to map the human brain. The science of MRI is still considered to be in its infancy. Suggested future applications include the diagnosis and treatment of as-yet unknown disease conditions and psychiatric disorders. Even behavior modification, lie detection, and thought control have been discussed as potential indirect applications of real-time MRI.

MRI is sometimes called nuclear magnetic resonance imaging (NMRI) because it involves the nuclei of atoms. However, because "nuclear" bears some negative connotations, that adjective is usually omitted.

This was last updated in March 2011

Continue Reading About magnetic resonance imaging (MRI)

Start the conversation

Send me notifications when other members comment.

Please create a username to comment.

-ADS BY GOOGLE

File Extensions and File Formats

SearchCompliance

  • smart contract

    A smart contract, also known as a cryptocontract, is a computer program that directly controls the transfer of digital currencies...

  • risk map (risk heat map)

    A risk map, also known as a risk heat map, is a data visualization tool for communicating specific risks an organization faces. A...

  • internal audit (IA)

    An internal audit (IA) is an organizational initiative to monitor and analyze its own business operations in order to determine ...

SearchSecurity

SearchHealthIT

  • Health IT (health information technology)

    Health IT (health information technology) is the area of IT involving the design, development, creation, use and maintenance of ...

  • fee-for-service (FFS)

    Fee-for-service (FFS) is a payment model in which doctors, hospitals, and medical practices charge separately for each service ...

  • biomedical informatics

    Biomedical informatics is the branch of health informatics that uses data to help clinicians, researchers and scientists improve ...

SearchDisasterRecovery

  • risk mitigation

    Risk mitigation is a strategy to prepare for and lessen the effects of threats faced by a data center.

  • ransomware recovery

    Ransomware recovery is the process of resuming options following a cyberattack that demands payment in exchange for unlocking ...

  • natural disaster recovery

    Natural disaster recovery is the process of recovering data and resuming business operations following a natural disaster.

SearchStorage

  • RAID 5

    RAID 5 is a redundant array of independent disks configuration that uses disk striping with parity.

  • non-volatile storage (NVS)

    Non-volatile storage (NVS) is a broad collection of technologies and devices that do not require a continuous power supply to ...

  • petabyte

    A petabyte is a measure of memory or data storage capacity that is equal to 2 to the 50th power of bytes.

Close