Magnetic Resonance Imaging: Difference between revisions
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==Introduction== | ==Introduction== | ||
Recently there have been several groups preparing developmental embryo atlases of several species, including human, based upon imaging of different age embryos. | |||
Magnetic Resonance Imaging (MRI) began in 1977 and uses magnetism, radio waves, and a computer to produce images either as individual slices or reconstructed to give three dimensional (3D) views of specific anatomical regions or structures. | Magnetic Resonance Imaging (MRI) began in 1977 and uses magnetism, radio waves, and a computer to produce images either as individual slices or reconstructed to give three dimensional (3D) views of specific anatomical regions or structures. | ||
==About MRI== | ==About MRI== | ||
Revision as of 10:53, 16 August 2010
Introduction
Recently there have been several groups preparing developmental embryo atlases of several species, including human, based upon imaging of different age embryos.
Magnetic Resonance Imaging (MRI) began in 1977 and uses magnetism, radio waves, and a computer to produce images either as individual slices or reconstructed to give three dimensional (3D) views of specific anatomical regions or structures.
About MRI
A strong magnetic field (up to 1.5 to 4 Tesla) is generated in the machine through which the body is passed (the centre of the "donut ring" seen in the above image). The earth's natural magnetic field is about 0.5 Gauss compared to 15,000 Gauss (1.5 Tesla) in the MRI.
MRI can be used in fetuses at 18 weeks gestational age or later and has been used mainly in brain and spinal diagnosis, and has also been used to investigate other abnormalities of pregnancy. (More? BrighamRAD Twin Gestation with Complete Hydatidiform Mole)
See also the related page MRI Movies which discusses MRI as a tool to study normal development.
