Kettős beáramlású kamráról akkor beszélünk, ha mindkét atrioventricularis szájadék ugyanabban a kamrában van. Kettős beáramlású bal kamra gyak-rabban, mig a kettős beáramlású jobb kamra ritkáb-ban fordul elő. A billentyűvel nem rendelkező kamra gyakran hipopláziás.
A betegek műtétére Fontan procedurát alkal-mazzák (a szisztémás vért az artéria pulmonálissal összekötik – így praktikusan a kamrát kikerülik és a szív egyedüli kiáramlási pályája az aorta fele irá-nyul). Típusosan a Fontan-műtét előtt a véna cava superior vérét terelik a tüdő, a jobb oldali artéria pulmonális ág felé (Glenn-műtét).
A betegek MRI vizsgálata gyakran nehéz, mert gyakran más eltérések is társulnak, pl. truncus pul-monalis distorsio, kamrai dysfunkció, és atrioventri-cularis billentyű regurgitáció (különösen ha az komplett közös atrioventricularis csatorna van).
Emellett stenosisok alakulhatnak a sebészi áramlási útvonalon és anastomosisokon (136, 137).
A képalkotás protokollja ilyen betegeknél a követ-kezőkből kell hogy álljon:
axiális T1 súlyozott felvételek
négyüreg és rövid tengely cine T2 súlyozott fel-vételek
MR angiográfia.
Vékony szeletes és ferde felvételek segítséget nyújthatnak a truncus pulmonális disztorziójának és az anasztomózisok vizualizálásában. általában fázis kontraszt vizsgálatot végzünk a sebészi anasztomó-zisok és a proximális pulmonális ágak esetén (135).
Fiziológiás kvantifikáció mérései. Regur-gitációs frakció és volumen. A congenitális anomáliák többsége esetén rendkívül fontos a az artéria
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