591 KB13 KB199220252000Berden, Pavelštevilka:2letnik:34str. 159-164COBISSID:11711449ISSN:1318-2099URN:URN:NBN:SI:doc-LYWUZMMTenCroatian Medical Association - Croatian Society of RadiologySlovenian Medical Society - Section of RadiologyRadiology and oncology (Ljubljana)Aneurysm, dissectingaortaAorta, thoracicAortic aneurysm, thoracicAortic diseasesAortic ruptureContrast mediadiagnostikaEchocardiographyFollow-up studieskardiovaskularne bolezniMagnetic resonance angiographyMagnetic resonance imagingSensitivity and specificityslikanje z jedrsko magnetno resonancoThrombosisTreatment outcomeMagnetic resonance of the thoracic aortic disease|Conventional ECG gated spin-echo (SE) magnetic resonance imaging (MR) and magnetic resonance angiography (MRA) are excellent methods for diagnosing thoracic aortic disease. SE image provides a good spatial resolution for defining aortic anatomy and relationships to adjacent tissues. MRA shows flow but temporal resolution is inferior to conventional MR images. Contrast-enhanced 3D (three-dimensional) MRA is very accurate for defining thoracic aortic anatomy and is particularly good for defining branch vessel abnormality. The sensitivity and specificity for diagnosing aortic dissection are the highest in comparison to other modalities (echocardiography, CT angiography) and range from 95% to 100% and 94% to 100%, respectively. MR can define clearly the full diameter of aortic aneurysm and also shows the amount of thrombi within it and its craniocaudal extent. A combination of SE and cineMRA is usually necessary. The same sequence with contrast enhancement provides all the required information on the congenital abnormalities of the aorta. MR is very reliable in congenital aortic abnormalities, aortic aneurysmand aortic dissection in hemodynamically stable patients. It should beused for all chronic thoracic aortic disease and postsurgical follow-up. Unstable patients that need intensive hemodynamic monitoring are unsuitable for MRObičajna, z EKG vodena spin-echo (SE) magnetna resonanca (MR) in magnetno resonančna angiografija (MRA) sta odlični slikovni metodi v diagnostiki obolenj torakalne aorte. SE nudi dobro prostorsko ločljivost, ki omogoča prikaz anatomije aorte in odnos do okolnih tkiv. MRA pokaže pretok, vendar je ločljivost slabša od običajne MR. 3D (tri dimenzionalna) MRA s kontrastnim sredstvom je zelo zanesljiva pri prikazu aortne anatomije, predvsem pa pri ugotavljanju nepravilnosti njenih vej. Občutljivost in specifičnost ugotavljanja aortne disekcije se gibljeta od 95% do 100% oziroma 94% do 100% in sta največji v primerjavi z drugimi slikovnimi tehnikami (ultrazvok, CT angiografija-CTA). MR jasno pokaže celoten premer aortne anevrizme, velikost tromba v njej in njeno širitev v trebušno votlino. Običajno je potrebna kombinacija SE in kino MRA. Enake sekvence s kontrastnim sredstvom nudijo tudivse potrebne podatke pri prirojenih nepravilnostih aorte. MR je zelo zanesljiva pri prirojenih nepravilnostih aorte, aortnih anevrizmah in disekcijah pri hemodinamsko stabilnih bolnikih. Uporabiti jo velja pri vseh kroničnih aortnih disekcijah in pooperativnem sledenju bolnika. Nestabilni bolniki, ki potrebujejo intenziven monitoring za MR niso primerniTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaOnkološki inštitut Ljubljana