Document Detail

Cardiac CT assessment of left atrial accessory appendages and diverticula.
MedLine Citation:
PMID:  19696296     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: The purpose of this study is to describe the prevalence, morphology, size, and location of left atrial abnormalities including diverticula and accessory appendages in consecutive patients undergoing cardiac-gated CT for coronary artery evaluation.
MATERIALS AND METHODS: Routine retrospectively gated contrast-enhanced 64-MDCT angiography (0.75-mm collimation, 330-milliseconds gantry rotation time) was performed in 529 consecutive patients. CT data sets were evaluated using axial, sagittal, coronal, and interactive multiplanar reconstructions; maximum intensity projections (MIPs); and interactive volume rendering. The presence, type, and location of left atrial appendages and diverticula were recorded.
RESULTS: One hundred twenty-one patients had left atrial accessory appendages (n = 20) or left atrial diverticula (n = 81) or both (n = 20). One hundred four left atrial diverticula were found in 101 of the 529 patients (20%) and 44 accessory appendages in 41 patients (8%). Of the atrial diverticula, 88% were superior and anterior, 9% were right lateral superior, and 3% were inferior. Of accessory appendages, 34% were inferior posterior, 32% were left inferior, 18% were superior anterior, 14% were inferior posterior, and 2% were right inferior posterior. The average sizes of diverticula were 6.4 +/- 2.5 x 6.2 +/- 2.4 mm, and accessory appendages were 4.9 +/- 2.1 x 3.9 +/- 2.4 mm.
CONCLUSION: Left atrial diverticula and accessory appendages are commonly found on cardiac-gated CT.
Suhny Abbara; Jorge A Mundo-Sagardia; Udo Hoffmann; Ricardo C Cury
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  AJR. American journal of roentgenology     Volume:  193     ISSN:  1546-3141     ISO Abbreviation:  AJR Am J Roentgenol     Publication Date:  2009 Sep 
Date Detail:
Created Date:  2009-08-21     Completed Date:  2009-09-29     Revised Date:  2011-10-27    
Medline Journal Info:
Nlm Unique ID:  7708173     Medline TA:  AJR Am J Roentgenol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  807-12     Citation Subset:  AIM; IM    
Department of Radiology, Section of Cardiovascular Imaging, Massachusetts General Hospital, Harvard Medical School, 55 Fruit St. (GRB-290), Boston, MA 02114-2696, USA.
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MeSH Terms
Contrast Media
Coronary Angiography / methods*
Diverticulum / epidemiology,  radiography*
Heart Atria / abnormalities*,  radiography*
Heart Defects, Congenital / epidemiology,  radiography*
Imaging, Three-Dimensional
Middle Aged
Radiographic Image Interpretation, Computer-Assisted
Retrospective Studies
Tomography, X-Ray Computed*
Reg. No./Substance:
0/Contrast Media
Comment In:
AJR Am J Roentgenol. 2011 Oct;197(4):W789; author reply 790   [PMID:  21940559 ]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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