Sign Up Now
Get instant access to over 1 million+ study documents
OR
Already registered? click here to login
By creating your account, you agree to our terms of service, privacy policy and student honor code.
MRI
The use if Magnetic Resonance Imaging (MRI) has greatly altered the ability of medical care professionals to diagnose illnesses in patients. The purpose of this discussion is to examine Pathologies and Diagnosis discovered through the use of MRI. All of the research for this analysis will come from resources that are no more than five years old.
Pathologies and Diagnosis discovered through the use of MRI
One of the diagnoses that the MRI has been credited with is Pancreatic Cancer. According to an article found in USA Today, new MRI's are now allowing for the early detection of pancreatic cancer, which usually spreads to other organs before it is detected. The article asserts that Until recently, the ability of radiologists to detect pancreatic cancer was limited by problems associated with existing MRI and computed tomography (CT) requirements. For example, distortions in MRI images caused by the pulsing of blood through the aorta or by the patient's breathing make it difficult to obtain images of the pancreas that are good enough for early detection. While dynamic enhanced CT also is useful in evaluating pancreatic cancer, that technique has difficulty spotting tumors smaller than two centimeters because of limited soft-tissue resolution (New MRI Aids Early Detection)."
The article asserts that the new MRI's are three dimensional and can therefore detect tumors that are not visible with older types...
According to the article MRI's have detected and quantified gray- and white-matter abnormalities as it relates to macrostructural and microstructural levels (Pfefferbaum, et al. 2003). The article explains that conventional structural MRI shows the size, shape, and tissue composition of the brain and its essential parts (Pfefferbaum, et al. 2003). In addition, Diffusion tensor imaging (DTI) shows the integrity of white-matter tracts that connect regions of the brain to one another (Pfefferbaum, et al. 2003).
In addition to pancreatic cancer and brain abnormalities MRI's can now be used to detect track inhaled or dissolved gases in the body. According to Kadlecek (2002) methods to examine the localized changes or abnormalities in lung structure and function were difficult to come by. The two most common types of diagnostic tools are spirometry which is the measurement of exhaled air volume and the speed at which it is expelled and the other diagnostic tool is chest x-rays, both conventional x-rays and those performed with CT scans (Kadlecek 2002). However when Helium-3 polarizers, are used in combination with magnetic resonance imaging (MRI), it can also be used as a diagnostic tool and permit the microscopic examination of lung structure and localized studies of lung function, which were…
References
Price, J.H. Breast Cancer Best Seen by MRI; Imaging Aids Women at Risk. (2004, September 16). The Washington Times, p. A06.
Kadlecek, S. (2002, November/December). Magnetic Resonance Imaging with Polarized Gases: Although Conventional MRI Cannot Track Inhaled or Dissolved Gases in the Body, Physicians May Soon Be Able to Do So Using Specially Prepared Atoms. American Scientist, 90, 540+.
New MRI Aids Early Detection. (2005, October). USA Today (Society for the Advancement of Education), 134, 4+.
Pfefferbaum, A. Rosenbloom, M., & Sullivan, E.V. (2003). Using Magnetic Resonance Imaging and Diffusion Tensor Imaging to Assess Brain Damage in Alcoholics. Alcohol Research & Health, 27(2), 146+.
Next, arch your back in the opposite direction, contracting your abs and pushing your lower back toward the ceiling while lowering the top of your head toward the floor. Make sure that all movement is initiated and controlled by your lower back. Repeat three times in each direction. Tail wag- Get down on all fours and look down at the floor. Keeping your shoulders still, slowly push your right hip
There are three types of stimuli used, which are: 1) Targets; 2) Irrelevant; and 3) Probes. These are used "in the form of words, pictures, or sounds..." which a computer presents for a second or even a partial second. Incoming stimulus, if it is worth noting, results in a P-300, which is an electrical brain response. The P-300 is part of a MERMER or a memory and encoding related multifaceted electroencephalographic response,
He proposed this technique as the solution to the problem of why some people do better than others in certain tasks, He likewise suggested cataloguing the differences in the size of the functional areas among individuals and correlating these with different talents and skills (Krotz 2001). Van Essen believed that his technique would ultimately lead to what makes people human or unique. Brain mapping charts and determines specific areas, such
misconception in people that having an aneurysm means bleeding in the brain. An aneurysm is in fact a balloon-like swelling in a blood vessel that can affect any large vessel in your body; these larger vessels being arteries. Aneurysms pose a risk to health from the potential for rupture, clotting, or dissecting. It is the pressure of the blood passing through a weak part of the blood vessel that
According to these authors, the fatal tragedy could easily have been avoided by taking more time for more focused and carefully planned clinical trials. According to this view, it was unethical to test Tysabri in the way it has been done, and furthermore irresponsible to enter it into the market before all side-effects were ascertained. 3. Interested parties: The interested parties in this case include Walter Smith, Anita's widower, as
The brain while expanding pushes the skull outward in the same perpendicular to the closed structure. This will be marked by the occurrence of 'papilledema' 'pseudoproptosis' as also 'optic atrophy.' (39) This results in the orbital socket being smaller and the eyes getting 'protoposed'. The intercranial pressure is bound to be high. The symptoms in such cases will be optic atrophy, head ache and papilledema. Or in the case