Magnetic Resonance Imaging Essay -- Biology Essays Research Papers

Magnetic Resonance visualise magnetic resonance imaging is a procedure, in wide use since the 80s, to assist the shape of the internal organs of the clay. It is based on the phenomenon of nuclear magnetic tintinnabulation (NMR), first described in landmark papers over litre years ago (Rabi et al. 1938 Rabi, Millman, and Kusch 1939 Purcell et al. 1945 Bloch, Hansen, and Packard 1946) (4 ). . The MRI is a valuable diagnostic and search tool with also practical applications for surgical planning and conquering diseases. This mental imagery procedure is painless and non-invasive although sometimes discomforting as the patient lies down in a body tube that surrounds them. For many years, closed MRI units commence been the standard in helping physicians make a diagnosis. These closed MRI units featured a long tube that the patient would be situated inside during their procedure. This was often uncomfortable for many patients due to the closed in feeling and was especially stressfu l for patients who suffer from claustrophobia. The newest generation of MRI units is immediately open on all four sides which completely alleviates the closed in feeling, while still providing the physician with the most faultless schooling likely to aid in diagnosis (2).. A patient does not see or feel anything. A faint knocking sound whitethorn be heard as the machine processes information. Patients may choose to try to music -- even having the option of bringing their own CDs to listen to. nigh MRI procedures take less than an hour. MRI technology is based on three things magnetism, radiofrequency and computers. The magnetic resonance machine, is a big and strong magnet. When the body is inside, every proton of the body is oriented in the same way (for instance, with the positivistic pole up). Water ... ...netic Resonance Imaging is one of the most accurate imaging modalities available today. It is an application of computer technology that has generated knowledge for the early and for practical application today. The field of imaging continues to expand as avidly pursued new dimensions in the acquisition of physiological and biochemical information occurs. WWW Sources1) Principles of Functional Magnetic Resonance ,http//www.mch.com/ 2) Consultants in Radiology , http//www.cirpa.com/Pages/OpenMRI.html3) MIT encyclopaedia of Cognitive Sciences , https//cognet.mit.edu/login/?return_url=%2Flibrary%2Ferefs%2Fmitecs%2Fugurbil.html4) Tracking Neural Pathways with MRI , https//cognet.mit.edu/login/?return_url=%2Flibrary%2Ferefs%2Fmitecs%2Fugurbil.html5) MRI OF HIPPOCAMPUS IN INCIPIENT ALZHEIMERS DISEASE http//www.uku.fi/neuro/37the.htm