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... 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).
COMPUTED TOMOGRAPHY AND ITS IMPORTANCE
The paper has discussed on Computed tomography which is a new methods, as professionals in the field have continuously worked for improving CT imaging technology.
Parametri
| linguaggio |  | inglese |
| numero di parole |  | 7700 (ca. 22 pagine) |
| qualità del contenuto |  | N/A |
| livello di linguaggio |  | N/A |
| prezzo |  | gratis |
| bibliografia |  | 11 |
Sommario
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Anteprima della tesi: COMPUTED TOMOGRAPHY AND ITS IMPORTANCE
COMPUTED TOMOGRAPHY AND ITS IMPORTANCE The main methods applied include magnetic resonance imaging (MRI), aortography, multidetector computed tomography (MCT) and transthoracic echocardiography (Norwood et al., 2007). Computed tomographic angiography (MCTA) does represent an important alternative to the old invasive contrast X-ray angiography when diagnosing aortic dissection. Kuettner et al ( 2004) suggests that a good example where computed tomography has been applied is in the assessment of abdominal aortic aneurysm morphology after endograft exclusion. An example of aneurysm is the abdominal aortic aneurysm (AAA). It is a common disease with an incidence of (1-3)% . Its most serious complication is the rupture that may lead to hypovolemic shock that may also cause irreversible renal injury thus leading to death in 30%-50% of the patients even in other circumstances when rupture is not present (Martuscelli et al., 2004). Clinically, the diagnosis of a ruptured aortic aneurysm is made when there is a pulsating abdominal mass, pain and hypotension is recorded (Norwood et al., 2007). In such circumstance, emergency surgery is carried out without the imaging procedures intervention. In some other circumstances, the clinical findings are less diagnostic and the process is further complicated by the fact that the symptoms may ...... 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).
Tesi presente nelle categorie
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Scienze Naturali
/Medicina
/Commenti
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