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COMPARISON OF COMPUTED TOMOGRAPHY (CT), MAGNETIC RESPONSE IMAGING (MRI) AND ULTRASOUND IN THE DIAGNOSIS OF AORTIC ANEURYSM
This paper is literature review which has compared computed tomography, magnetic imaging ad ultrasound techniques as used in the diagnosis of Aortic Aneurysm.
|language || ||english
|wordcount || ||9725 (cca 27 pages)
|contextual quality || ||N/A
|language level || ||N/A
|price || ||free
|sources || ||31
Table of contents
1.0 INTRODUCTION 4
2.0 METHODOLOGY 5
3.0 COMPUTED TOMOGRAPHY (CT) IN THE DIAGNOSIS OF AORTIC ANEURYSM 6
3.1 Aortic aneurysm 6
4.0 MAGNETIC RESONANCE IMAGING (MRI) 15
5.0 USE OF ULTRASOUND IN THE DIAGNOSIS OF AORTIC ANEURYSM 20
6.0 CONCLUSION 28
6.1 What is then the most sensitive, effective non-invasive imaging strategy for the diagnosis of aneurysm? 28
Preview of the essay: COMPARISON OF COMPUTED TOMOGRAPHY (CT), MAGNETIC RESPONSE IMAGING (MRI) AND ULTRASOUND IN THE DIAGNOSIS OF AORTIC ANEURYSM
The availability of magnetic resonance imaging (MRI) and computed tomography (CT) scanning techniques has rapidly grown in the last years. Rupture of an aortic aneurysm is considered a medical catastrophe that requires a prompt diagnostic procedure and treatment (Nyhsen & Elliot, 2007). One of the main causes of death in patients suffering from one from of aneurysm to another is the diagnostic delay. A patient who is thus on typical symptoms need not undergo a prolonged preoperative procedures (Gauvrit, Leclerc & Vermandel, 2005).
In the past, CT was the main procedure employed for the diagnosis of ruptured abdominal aortic aneurysm (AAA). The technique is well appreciated since it is considered to be highly accurate in not only detecting the AAA but also the retroperitoneal hemorrhage (Beretta, 2004). The eventual contrast medium used may also help in directly confirming the presence and site of rupture (Yoon, 2007). In the past years, there has been an ever increasing number of AAAs that has been detected sonographically. It is on this regard that sonography is currently used to detect aneurysm in emergency situations where ...
... provides transverse, coronal and sagittal views of the aorta that are used to define aneurysm with clarity that can almost be equaled to that of contrast aortography.
An additional advantage of MRI is that beyond being non-invasive, it does not require ionizing radiation or even the injection of contrast material (Mavrogeni et al., 2004). There are however major disadvantages that limit the use of MRI. These are associated with the fact that it is not commonly available, it’s expensive, are imprecise in identifying occlusive arterial diseases that are associated with aneurysm and are contraindicated in patients that have used ferromagnetic clips and those with pacemakers. It can thus be said that at the moment, MRI does not offer any practical advantage over CT or sonography. Ultrasonography should be the most applicable technique for the detection of aneurysm and the sequential follow-up. CT should be done where ultrasonograhy cannot be performed and precise sizing of the aneurysm is required (Morgan-Hughes et al., 2005).
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