Essay --

As of 2012, approximately 400,000 people in the unify States have been diagnosed with MS, with 10,000 new cases being diagnosed each year. Worldwide, MS affects between 1.5 and 2.5 meg people. (Davidson, Fallon, Slomski & Cataldo, 2013, p. 2228). With statistics like this many another(prenominal) people have encountered individuals with Multiple Sclerosis (MS). The aspire of this report is to describe in detail this disease and how magnetic resonance imaging is the sensory system of choice to diagnose. The DiseaseMS is an autoimmune disease. This means that the bodys immune system attacks normal tissue. Immune mobile phones attack and obliterate the medulla oblongata sheath that surrounds neurons found in the brain and spinal cord. Myelin is an alpha component of neurons because it acts as an insulator. Myelin sheaths help electric signals travel efficiently from the brain to field of battles of the body, and speeds transmission and prevents electrical activity in on e cell from short-circuiting to another cell (Davidson et al., 2013, p. 2228). MS attacks these bulb sheaths and disrupts the efficiency of that signal. It can be compared to a radio transmission. When myelin is working properly, one can go through a clear broadcast. However, when myelin is attacked and destroyed the transmission is no interminable clear. It is jarbbled, hence, it alters and disrupts the message. When myelin is destroyed it turns into scar tissue called a plaque. This plaque entrust appear as small round areas of gray neurons without the white myelin covering (Davidson et al., 2013, p. 2228).CausesThere is no known reason to explain wherefore the body starts attacking its own myelin sheaths. Though there has been untold research, researchers have not been able to pinpoint a trigger. However, through this resear... ...em, because cortical bone does not produce a signal in MRI. This area is often obscured on CT because of the beam hardening artifact. The use of atomic number 64 better differentiates and increases sensitivity in detecting lesions. Diffusion-weighted imaging also gives MRI the ability to determine the age of lesions or differentiate acute from degenerative ischemic changes (Pierce & Dubose, 2012). In conclusion, MS is a disease affecting many individuals. It can shorten the individuals lifespan, but many discourse options are available to help cope with the symptoms. MRI is an evolving sense modality as it was just introduced in the 1990s and many advances have been made in the past couple of years. MRI is more sensitive than CT in detecting changes in the white matter of the brain. That is why MRI is the modality of choice to help diagnose a case of Multiple Sclerosis.