MRI - translation to french
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MRI - translation to french

MRI; Magnetic Resonance Imaging; MRI scan; 1H-nuclear magnetic resonance spectroscopic imaging; NMR imaging; Magnetic resonance tomography; MRIs; MRI body scanner; MRI's; T2 (MRI); Contrast MRI; Mri; Zeugmatography; Mri scan; Nuclear scanning; Magnetic resonance image; MRI Scanner; MRI exam; Nuclear magnetic resonance imaging; Unsolved problems in diagnostic imaging; Open MRI; Magnetic Resonance Image; MRI scans; MRI-screen; Nuclear Magnetic Resonance Imaging; Magnetic resonance Imaging; EU Physical Agents (Electromagnetic Fields) Directive; T2 MRI; T2 weighted imaging; T2-weighted imaging; T2-weighted MRI; MRI machine; Magnetic resonance topography; MR scanning; Magnetic Resonance Tomography; T2*-weighted; Magnetic resonance urography; Magnetice resonance imaging; 3 Tesla MRI; 3-Tesla MRI; 3T MRI; 3 T MRI; 3-T MRI; Magnetic resonance images; Magnetic-resonance imaging; Proton density MRI; Spectral presaturation with inversion recovery; T2 weighted; Clinical MRI; Clinical NMRI; Clinical magnetic resonance imaging; T1-weighted; T2-weighted; Magnet resonance imaging
  • A mobile MRI unit visiting Glebefields Health Centre, [[Tipton]], England
  • Motion artifact (T1 coronal study of cervical vertebrae)<ref name="ErasmusHurter2004"/>
  • Schematic of construction of a cylindrical superconducting MR scanner
  • MR angiogram in congenital heart disease
  • Real-time MRI of a [[human heart]] at a resolution of 50&nbsp;ms
  • Patient being positioned for MR study of the head and abdomen
  • frameless
  • PD-weighted]] MRI scans
  • Effects of TR and TE on MR signal
  • MRI diffusion tensor imaging of [[white matter]] tracts

MRI, magnetic resonance imager, diagnostic technique which uses a magnetic field and radio waves to provide computerized images of internal body tissues (Medicine)


¦ abbreviation magnetic resonance imaging.


Magnetic resonance imaging

Magnetic resonance imaging (MRI) is a medical imaging technique used in radiology to form pictures of the anatomy and the physiological processes of the body. MRI scanners use strong magnetic fields, magnetic field gradients, and radio waves to generate images of the organs in the body. MRI does not involve X-rays or the use of ionizing radiation, which distinguishes it from CT and PET scans. MRI is a medical application of nuclear magnetic resonance (NMR) which can also be used for imaging in other NMR applications, such as NMR spectroscopy.

MRI is widely used in hospitals and clinics for medical diagnosis, staging and follow-up of disease. Compared to CT, MRI provides better contrast in images of soft-tissues, e.g. in the brain or abdomen. However, it may be perceived as less comfortable by patients, due to the usually longer and louder measurements with the subject in a long, confining tube, though "Open" MRI designs mostly relieve this. Additionally, implants and other non-removable metal in the body can pose a risk and may exclude some patients from undergoing an MRI examination safely.

MRI was originally called NMRI (nuclear magnetic resonance imaging), but "nuclear" was dropped to avoid negative associations. Certain atomic nuclei are able to absorb radio frequency energy when placed in an external magnetic field; the resultant evolving spin polarization can induce a RF signal in a radio frequency coil and thereby be detected. In clinical and research MRI, hydrogen atoms are most often used to generate a macroscopic polarization that is detected by antennas close to the subject being examined. Hydrogen atoms are naturally abundant in humans and other biological organisms, particularly in water and fat. For this reason, most MRI scans essentially map the location of water and fat in the body. Pulses of radio waves excite the nuclear spin energy transition, and magnetic field gradients localize the polarization in space. By varying the parameters of the pulse sequence, different contrasts may be generated between tissues based on the relaxation properties of the hydrogen atoms therein.

Since its development in the 1970s and 1980s, MRI has proven to be a versatile imaging technique. While MRI is most prominently used in diagnostic medicine and biomedical research, it also may be used to form images of non-living objects, such as mummies. Diffusion MRI and functional MRI extend the utility of MRI to capture neuronal tracts and blood flow respectively in the nervous system, in addition to detailed spatial images. The sustained increase in demand for MRI within health systems has led to concerns about cost effectiveness and overdiagnosis.

Pronunciation examples for MRI
1. especially MRI.
2. with MRI.
Sex, Lies, and Brain Scans - How fMRI Reveals What Really Goes on in Our Minds _ Talks at Google
3. using MRI --
4. in an MRI machine.
The Not So Secret Life Of Dogs _ Patricia McConnell _ Talks at Google
5. a volumetric MRI.