Magnetic Resonance Image(MRI) Research Paper Example | Topics and Well Written Essays - 2000 words

Magnetic Resonance Image(MRI) - Research Paper ExampleThe very prodigious cost of MRI machines and their large size and specialized installation requirements acts as a deterrent to wider use of this technology. There is work underway that promises reduced costs and size of MRI machines, specially in the form of specialized machines for the scan of extremities such as wrists and ankles. The success of this effort could lead to wider use of the technology. Keywords Magnetic Resonance Imaging, diagnostics, magnetic pulse 1. presentment The first Magnetic Resonance Image (MRI) was produced in 1973 and the procedure has now become a rapidly growing medical exam diagnostic tool for the medical profession. Over 30 million MRI procedures were done in the US in 2010 and new advances in technology is making specialized MRI procedures ready(prenominal) for screening for a wider range of diseases and medical conditions each year. The human body can be considered to be essentially made up of three types of significant off-white which is hard and made up of minerals such as calcium, soft tissue including muscles, flesh, blood vessels and organs such as liver, kidney, heart and lungs and fluids including blood and air. The domain of diagnostic imaging started with the discovery of X-rays in 1895 by Wilhelm Rontgen. Even today, over two-thirds of medical diagnostics are done using X-rays. X-rays are ionizing radiations and the image is captured on a photographic film. X-ray images are good for viewing bones but the resolution for viewing soft tissue is often inadequate. The invention of Computed imaging (CT) sought to address this limitation by using digital images in place of photographic plate and to manipulate the images for contrast and brightness to distinguish assorted types of soft tissue from each other (Ostensen, 2001). sonography or ultrasonography was developed as the safer technology for viewing soft tissue and body fluids in the 1950s and 1960s. In this technique, sound waves of frequency between 3.5 MHz and 7 MHz are generated using a transducer or investigation. Sound waves bye through human body get reflected when it passes from one type of tissue to the other. The reflected sound wave is picked by a microphone built into the same probe housing as the signal generator and a computer image of the internal tissue is created in real time. The medical professional can impress the probe over the body area to see the changes in the image and also freeze the image for recording. Using sonography, it is possible to see images of blood current through arteries and veins and see heart valves opening and closing. Ultrasound equipment is comparatively inexpensive and is safe as compared to X-rays. The interpretation of the ultrasound images however requires trained medical professionals and on that point is high risk of incorrect diagnosis (Ostensen, 2001). Ultrasound has no known side effects and is safely used even for examination of an unborn fetus. Ultrasound waves do not pass through air and are therefore not effective for examination of the stomach or the intestines. They also cannot penetrate bone and therefore are not used for areas with bone covering such as the skull. In obese patients, excess body fat sometimes makes ultrasound examination difficult as the reflected sound