MRI Fundamental
Expedition To MRI
Spin Physics to MRI
Electro-Magnetic To Image
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- In photography we illuminate the object and light reflected from the object, falling on sensor or phography paper converted into image.
- Radiography is a technique to take picture inside body by sensing attenuated or reflected beam of EM waves passing inside body.
- In Magnetic Resonance Imaging tissue voxels are exited to enegrize by ElectroMagnetic waves in the present of strong Magnetic field then energy released is captured to convert into image.
Photography Radiography Magnetic Resonance Imaging
Gyromagnetic Ratio
There is a constant of proportionality, known as the gyromagnetic ratio, is dependent on the nucleus type. The values for select nuclei are listed in Table. Most clinical applications of MRI require an abundance of hydrogen inside the object to be imaged because its relatively high gyromagnetic ratio eases the imaging process. The human body is primarily fat and water, both of which have many hydrogen atoms.
