Embryology and Developmental Defects of the Interatrial Septum

OBJECTIVES: The various types of atrial septal defects (ASDs) can be differentiated on the basis of their imaging appearance on MDCT.

CONCLUSIONS: It is fundamental for the cardiac imager to understand the embryologic development of the interatrial septum and the morphogenic differences of ASDs. 

PMID: 20966313

Posted in Computed Tomography and tagged , .

One Comment

  1. Short review of the development of the IAS. The diagrams on the development of the septum are great. The images shown in this pictorial are exclusively from CT exams which highlights the importance of reviewing the cardiac structures in their entirety.

    See also:

    ECG-gated cardiac CT angiography using 64-MDCT for detection of patent foramen ovale. []
    AJR Am J Roentgenol. 2008 Apr;190(4):929-33.
    Williamson EE, Kirsch J, Araoz PA, Edmister WB, Borgeson DD, Glockner JF, Breen JF.

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