Notes in 06 Multiple gestations and placentation

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Status	Last Update	Fields
Published	05/01/2023	Obstetrical Imaging: Multiple gestations and placentation{{c1::Monozygotic::Monozygotic/Dizygotic}} twins can have any placentation types.
Published	05/01/2023	Obstetrical Imaging: Multiple gestations and placentationTrue or false: Dizygotic twins can share an amnion. {{c1::False}}
Published	05/01/2023	Obstetrical Imaging: Multiple gestations and placentationTrue or false: Monoamniotic twins must share a chorion. {{c1::True}}
Published	05/01/2023	Obstetrical Imaging: Multiple gestations and placentationTrue or false: Monochorionic twins must share a amnion. {{c1::False}}
Published	05/01/2023	Obstetrical Imaging: Multiple gestations and placentationTrue or false: Mono/di twins are at risk for cord entanglement.{{c1::False; only mono/mono ar…
Published	05/01/2023	Obstetrical Imaging: Multiple gestations and placentationTrue or false: di/di twins can be monozygotic or dyzygotic.{{c1::True}}
Published	05/01/2023	Obstetrical Imaging: Multiple gestations and placentationIf a single gestational sac contains two {{c1::yolk sacs}}, the placentation {{c2::…
Published	05/01/2023	Obstetrical Imaging: Multiple gestations and placentationIf two {{c3::gestational sac}} are identified, the placentation {{c2::di/di}}.
Published	05/01/2023	Obstetrical Imaging: Multiple gestations and placentationIf a single gestational sac contains two yolk sacs, the zygosity is {{c2::mono/di}}.
Published	05/01/2023	Obstetrical Imaging: Multiple gestations and placentationIf two gestational sacs are identified, the zygosity is {{c2::indeterminate}}.
Published	05/01/2023	Obstetrical Imaging: Multiple gestations and placentationMost monozygotic (identical) twins have {{c1::mono/di::di/di, mono/di, mono/mono}} placentati…
Published	05/01/2023	Obstetrical Imaging: Multiple gestations and placentationMono/di twins split embryologically after formation of the {{c1::placenta}} but before f…
Published	05/01/2023	Obstetrical Imaging: Multiple gestations and placentationDi/di twins split embryologically before formation of the {{c1::placenta}}.
Published	05/01/2023	Obstetrical Imaging: Multiple gestations and placentationMono/mono twins split embryologically after formation of the {{c1::amnion}}.
Published	05/01/2023	Obstetrical Imaging: Multiple gestations and placentationIn di/di twins, the {{c1::inter-twin membrane}} will be relatively thick as there are two lay…
Published	05/01/2023	Obstetrical Imaging: Multiple gestations and placentationIn di/di twins, the thickness of the inter-twin membrane is less reliable to determine chorio…
Published	05/01/2023	Obstetrical Imaging: Multiple gestations and placentationIn placental evaluation, what does the twin peak sign (lambda sign) refer to?{{c1::Triangle-s…
Published	05/01/2023	Obstetrical Imaging: Multiple gestations and placentationIn a mono/di twins, what is the inter-twin membrane composed of?{{c1::Amnion}}
Published	05/01/2023	Obstetrical Imaging: Multiple gestations and placentationIn twin evaluation, what does the "T-shape configuration" refer to?{{c1::Insertion of the int…
Published	05/01/2023	Obstetrical Imaging: Multiple gestations and placentationTrue or false: lack of visualization of an inter-twin membrane is not sufficient to diagnose …
Status	Last Update	Fields