MRI Essay Example | Topics and Well Written Essays - 2000 words

MRI - Essay ExampleSlice unitaryrousness, is one important parameter, which divides the tree trunk musical composition being examined into sections of varying width or thickness. The result of examination depends on the slice thickness. If it happens to be a minute problem, then the slice thickness will be small, because a larger slice thickness might result in erasing small lesions or pathologies.MRI is mainly used to look into the disposition and the nervous system of human body to figure out the inconsistencies using the functional magnetic ring imaging, as these parts happen to be the most delicate parts of human body. Prasad (2005, 292) states that the MR images are in effect computer generated visual reconfigurations of physical data such as the relaxation times of henry atoms that are found abundantly in the body. More than devil third of our body is made up of hydrogen atoms. Hydrogen exists in different forms in our body. For example water (H2O), consisting of two H atoms and one O, makes up about 70 percent of human body. In addition Hydrogen atoms are to a fault present in the tissues and fat present in human body.When magnetic energy is sent into our body using radio frequencies, the hydrogen atoms absorb the magnetic rays and send out the same magnetic energy, depending upon the fulfilment of magnetisation. As the nuclei of the hydrogen atoms happen to be in the form of small magnets, so when the magnetic field change in their surroundings, they respond accordingly. This movement is recorded by the MRI equipment which in turn is analysed by the healthcare professionals to decipher the exact composition. As the experiments started off with an emphasis on nucleus, in early old age MRI was known as Nuclear Magnetic Resonance (NMR). Since the process itself is stated to involve genuinely small amount of energy, the normal biochemistry of human body is not affected.The key requirements for performing an MRI implicateA strong magnetic field th rough the primary magnet, emanating out of the a magnetic which could be a permanent, resistive or a superconductiveGradient magnets for fine tuning the magnetic fieldsThe scan table on which the patient is allowed to lieAttached computers and film for taking the printout of the scanThe individual who is to abide MR imaging is allowed to comfortably lie on a sliding table. The table is then slid into a cylindric structure which is surrounded by the magnets. Once everything is in position, the magnetic field is turned on this creates a 2-dimensional image of the particular body part of the person on the computer screens. A coil is fit(p) around the body part/ object which is under observation for MRI, exclusively to pick up the signals for the image. Well, near to make things easier a talk-back system is also in put in place so that aft(prenominal) the start of clinging sound the patient doesnt feel uncomfortable, and if required he can communicate with the radiologist. The proc edure may last for about 25-50 minutes depending upon the requirements and the complexity of the patient condition. There are in general two to six imaging sequences, each lasting for about 10-15 minutes. Since the process involves magnetic fields, it is therefore advised that anybody having bimetallic implants in their bodies must inform the radiologist beforehand, so that adequate