Key Elements For Advantages & Disadvantages Of CT-Scan & MRI
The technologic revolution is being fuelled by developments of powerful computers and rapid telecommunications. This has affected all branches of medicine particularly diagnostic imaging (Goske and et.al., 2008). Techniques like CT scan, Magnetic Resonance Imaging offer computerized image reconstructions of sections in body in different plans. CT scan also known as CAT scan is considered to be a specialized X-ray test (Melnyk and Fineout Overholt, 2005). These make use of x rays and computers for the creation of a detailed image of inside structures of body. They provide for good pictures of soft body issues which are not shown in ordinary X-ray pictures (CT scan, 2014). On the other hand, Magnetic resonance imaging or MRI makes use of strong magnetic field as well as radio waves for production of detailed images of inside areas of body (Zijta, Bipat and Stoker, 2009). The technique is being utilized in hospitals on a wider level for the process of medical diagnosis, staging of disease and to follow up without an exposure to ionizing radiation. It is essential to judge the key advantages and limitations of CT and Magnetic Resonance Imaging for imaging of the head. This will aid in finding out the effectiveness of techniques and there usage in diverse situations.
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CT scan is considered to be far more superior in comparison to Magnetic Resonance Imaging when there is a need to undertake skull fractures. It is further considered to be a non invasive procedure which is also painless and sensitive to detect overall pathology of head (Melnyk and Fineout Overholt, 2005). There is also a provision of detailed images in the nervous tissue of brain and is excellent when involved individuals are in head trauma, presence of implanted medical devices but not good for pregnant women as there is a heavy risk to fetus (Advantages and Disadvantages involved in CT Scans, 2014). This is on account of the presence of radiations that makes it all the more harmful. The dye used in CT scan is iodine based and often results in allergy. It can further led to kidney failure for those individuals who are suffering from diabetes (Winston, 2014). Moreover, it is also not good for children as repeated exposure may result in harm. The technique has been found to be excellent in bleeding of brain but not good in identification of pathology found in soft tissues. Neither is it good to identify areas in infection in brain. But CT scan is much cheaper in comparison to MRI and also equally fast (Hess, 2012). Least number of issues is faced in terms of motion artifacts when a CT scan is involve rather than an Magnetic Resonance Imaging. These scans can also be performed in patients who have got the presence of implanted medical devices (Lee and et.al, 2004).
Hence, it can be critically evaluated that CT scan as a diagnostic imaging procedures are found to be safe but they do expose the patients to a slightly more radiation than the usual. A huge variation is although present towards exposure to radiations (McRobbie, 2007). But in most of the cases, benefits have far been found to outweigh potential risks (Keyak and Falkinstein, 2003). It is because the CT scan can provide many clear images than the ones which have been produced by a normal X-ray.
Magnetic Resonance Imaging technique on the other hand does not make use of ionizing radiation. This it can be critically assessed for dissertation writing report that the technique is preferred for children as well as those patients that are in need of multiple imaging examinations (Wang and et.al., 2012). Hence, there is a minimum presence towards an exposure to ionizing radiation. However, it can further be assessed that Magnetic Resonance Imaging scanning technique s not fit for the ones who have implanted pacemakers (Rebecca, 2012). MRI in terms of imaging provides for wide ranging soft tissue contrast followed by carrying out a detailed depiction of anatomy (Goske and et.al., 2008). It is further found to be a lot more sensitive for abnormalities. Moreover, this scan can be performed in such a manner without having a need to physically move the patient (Frydrychowicz and et.al., 2012). The lack ionizing radiation further provides for an advantage as there is a smaller risk towards development of lethal allergic reaction. It is considered to be a painless and safe procedure but there may be a discomfort to some people if they are claustrophobic (Masselli and Gianfranco, 2012). It can be evaluated that people usually find this manageable as they get support from radiographer. On basis of extensive research carried out by researcher to find out whether magnetic fields and radio waves produce during Magnetic Resonance Imaging can harm humans, it has been critically evaluate that there seems to be no such presence of risk thereby making MRI as one of the safest medical procedures that are currently available (LoBiondo-Wood and Haber, 2006).
Hence by assessing the advantages and disadvantages of Computed tomography (CT) and magnetic resonance imaging (MRI) it can be critically evaluated that these imaging techniques have revolutionized how to study the brain (Melnyk and Fineout Overholt, 2005). They have further aided the doctors to infer the causes of abnormal function that happen on account of the diseases. Hence, CT and MRI can be regarded as complementary techniques and both have a presence of their own strengths and weaknesses (Ellis and Hooper, 2009). The choice of procedure is dependent on quickness for scan, part of brain that is under examination, age of the patient among others. Moreover, it is also true that both the techniques are meant for examination of specific problems. For example, Magnetic resonance (MRI) is basically used in place of computed tomography (CT) when there is a need to study organs or soft tissue. This is because Magnetic Resonance Imaging is much better to differentiate between normal and abnormal soft tissue (Goske and et.al., 2008). On the other hand, CT scan is beaten suitable to view bone injuries, diagnosis of problems related to lung and chest as well as detection of cancers.
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