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Essay / Research Paper Abstract
This 12 page paper looks at several types of Magnetic Resonance Imaging. The Spin Echo Sequence, the Inversion Recovery Sequence, Saturation Recovery Sequence, Spiral Pulse Sequence and the Gradient Echo Sequence are each discussed in depth. Bibliography lists 13 sources.
Page Count:
12 pages (~225 words per page)
File: RT13_SA207MRI.rtf
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Unformatted sample text from the term paper:
not see before. It is an imaging technique that is used mostly in medical settings in order to produce high quality images by looking inside of the human body (Hornak,
2001). MRI is in fact based on the principles of nuclear magnetic resonance (NMR), something that is a spectroscopic technique and utilized by scientists so that they could obtain microscopic
chemical and physical information regarding molecules (2001). The new technique was labeled magnetic resonance imaging as opposed to nuclear magnetic resonance imaging (NMRI) and that is because of negative connotations
associated with the term nuclear during the late 1970s (2001). MRI began more as a tomographic imaging technique in that it produced an image of the NMR signal via
a small slice through the human body, but MRI has actually advanced far beyond a tomographic imaging technique and is now a volume imaging technique (Hornak, 2001). While it is
highly technical, the MRI exam actually consists of a machine that is able to form images. While noninvasive, some patients are anxious about the process. A typical MRI exam will
consist of imaging of a patient who must be placed inside a long tubular hole (Hornak, 2002). If the feet or knees are being examined, the patients head will
be placed outside of the magnet, but if the upper part of the body is being imaged, the feet hang just outside of the imaging device (2002). After the
patient is positioned, a technician positions an imaging coil around the anatomy being examined (2002). A piece of anatomy is positioned to intersect a crossed light beam (2002). Such a
spot will be advanced to the isocenter of the magnet prior to the start of the scanning process (2002). This part of the process is named landmarking
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