Avtor/Urednik		Berden, Pavel
Naslov		Magnetic resonance of cardiac tumors and masses
Prevedeni naslov		Magnetna resonanca tumorjev in netumorskih mas v srcu
Tip		članek
Vir		Radiol Oncol
Vol. in št.		Letnik 34, št. 2
Leto izdaje		2000
Obseg		str. 151-8
Jezik		eng
Abstrakt		Cardiac tumors are rare and should be differentiated from nontumoral cardiac masses because of different therapeutic approach. For this purpose, spin-echo (SE) technique and gradient-echo (GE) technique are used in magnetic resonance imaging (MR). The first provides anatomic evaluation of the heart and tissue characterization, while the second provides dynamic information on the blood flow and heart contraction. Cardiac myxoma is differential from thrombus by paramagnetic contrast agent administration. Their mobility is evaluated with GE technique. Lipomas and subacute hemorrhage have the same, high signal intensity on T1-weighted spin-echo image, therefore, the fat suppression technique is appropriate to recognize them. MR is used in evaluating the response of the malignant tumor to chemotherapy. GE MR is useful to differentiate between the thrombus and slow-flowing blood; the administration of gadolinium helps to distinguish the thrombus from the tumor. In patients suspected of having a cardiac tumor, echocardiography is the first method of choice. MR is used to confirm the findigs of echocardiography, to determine precisely the tumor location, extent, and its tissue characterization, to follow up patients under treatment, and to detect early tumor recurrence.
Izvleček		Tumorji srca so redki in jih je potrebno ločiti of netumorskih mas v srcu, saj je zdravljenje različno. V ta namen se pri slikanju z magnetno resonanco (MR) uporabljata spin-echo (SE) in gradient-echo (GE) tehnika. Prva omogoča prikaz anatomije srca in ugotavljanje sestabe tkiva, druga nudi informacije o dinamiki - pretoku krvi in srčnih kontrakcijah. Miksom srca ločimo od tromba s pomočjo intravenske aplikacije paramegnetnega kontrastnega sredstva. Z GE tehniko ocenjujemo njegovo premičnost. Lipom in subakutna krvavitev imata enako, visoko intenziteto signala na T1-uravnoteženi sliki, zato za njuno razpoznavo uporabimo tehniko maščobne supresije. MR uporabljamo za oceno reakcije malignega tumorja na kemoterapijo. GE MR je koristna pri ločevanju tromba in počasnega pretoka, intravenska aplikacija gadolinija pa za ločitev tromba od tumorja. Ehokardiografija je prva metoda izbire pri bolnikih s sumom na tumor v srcu. MR uporabimo za potrditev ehokardiografskega izvida, za natančnejšo opredelitev lokalizacije in razširjenosti tumorja, za ugotavljanje sestave tumorskega tkiva, za spremljanje bolnikov med zdravljenjem in za zgodnje odkrivanje morebitne ponovne tumorske rasti.
Deskriptorji		HEART NEOPLASMS MAGNETIC RESONANCE IMAGING DIAGNOSIS, DIFFERENTIAL MYXOMA HEMORRHAGE LIPOMA THROMBOSIS ECHOCARDIOGRAPHY RECURRENCE TREATMENT OUTCOME