CT evaluation of normal interatrial fat thickness

Lynn S. Broderick, Dewey J. Conces, Robert D. Tarver

Research output: Contribution to journalArticle

7 Scopus citations


Purpose: This study was performed to determine the normal thickness of fat in the interatrial septum as demonstrated by CT. Method: Eighty-seven subjects underwent helical chest CT examination as part of a separate protocol to compare the quantification of coronary artery calcification by CT to coronary angiographic findings, using a slice width of 3 mm, reconstructed every 1.5 min. The thickness of the interatrial fat in both groups was measured anterior and posterior to the fossa ovalis. The mean and standard deviation were calculated. Results: The mean thickness of interatrial fat anterior and posterior to the fossa ovalis was 4.6 (SD = 2.5) and 3.7 (SD = 3.1) mm, respectively. Conclusion: The normal range of thickness of the interatrial fat is 0-9.6 mm anterior to and 0-9.9 mm posterior to the fossa (2 SD above the mean).

Original languageEnglish (US)
Pages (from-to)950-953
Number of pages4
JournalJournal of Computer Assisted Tomography
Issue number6
StatePublished - Nov 1 1996


  • Computed tomography, spiral
  • Heart
  • Heart, anatomy
  • Heart, diseases

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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