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 in both health and disease mri scanners use strong magnetic fields magnetic field gradients . 22 basic principles of mri the basis of mri is the directional magnetic field or moment associated with charged particles in motion nuclei containing an odd number of protons and or neutrons have a characteristic motion or precession . The first clinical magnetic resonance images were produced in nottingham and aberdeen in 1980 and magnetic resonance imaging mri is now a widely available powerful clinical tool 3 4 this article covers a brief synopsis of basic principles in mri followed by an overview of current applications in medical practice. Magnetic resonance basic principles a brief introduction to mri magnetic resonance imaging mri makes use of the magnetic properties of certain atomic nuclei an example is the hydrogen nucleus a single proton present in water molecules and therefore in all body tissues the hydrogen nuclei behave like compass needles that are partially
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