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The Role of Magnetic Resonance Imaging and Cardiac Computed Tomography in the Assessment of Left Atrial Anatomy, Size, and Function.

Kuchynka P, Podzimkova J, Masek M, Lambert L, Cerny V, Danek B, Palecek T - Biomed Res Int (2015)

Bottom Line: In the last decade, there has been increasing evidence that comprehensive evaluation of the left atrium is of utmost importance.Numerous studies have clearly demonstrated the prognostic value of left atrial volume for long-term outcome.Furthermore, advances in catheter ablation procedures used for the treatment of drug-refractory atrial fibrillation require the need for detailed knowledge of left atrial and pulmonary venous morphology as well of atrial wall characteristics.

View Article: PubMed Central - PubMed

Affiliation: Second Department of Medicine-Department of Cardiovascular Medicine, First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague, Prague, Czech Republic ; International Clinical Research Center, St. Anne's University Hospital in Brno, Brno, Czech Republic.

ABSTRACT
In the last decade, there has been increasing evidence that comprehensive evaluation of the left atrium is of utmost importance. Numerous studies have clearly demonstrated the prognostic value of left atrial volume for long-term outcome. Furthermore, advances in catheter ablation procedures used for the treatment of drug-refractory atrial fibrillation require the need for detailed knowledge of left atrial and pulmonary venous morphology as well of atrial wall characteristics. This review article discusses the role of cardiac magnetic resonance and computed tomography in assessment of left atrial size, its normal and abnormal morphology, and function. Special interest is paid to the utility of these rapidly involving noninvasive imaging methods before and after atrial fibrillation ablation.

No MeSH data available.


Related in: MedlinePlus

Contrast-enhanced CT image showing the most common subtype of left atrial appendage called chicken wing.
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Related In: Results  -  Collection


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fig5: Contrast-enhanced CT image showing the most common subtype of left atrial appendage called chicken wing.

Mentions: The LAA has variable shapes and number of lobes. Four different shapes have been described: cactus, chicken wing (Figure 5), windsock, and cauliflower. The cactus shape is defined as a dominant central lobe with limited overall length and one or more secondary lobes; the chicken wing shape is defined as a main lobe that bends from the proximal middle part of the LAA; the windsock shape is characterized by one dominant lobe with several secondary, or even tertiary, lobes; and the cauliflower shape describes LAA morphology with limited overall length and complex internal structures [64]. The chicken wing shape seems to be the most common morphological subtype of the LAA according to a study by Di Biase et al. [65]. In the study, 932 patients with AF were investigated either by CT or CMR, and it was demonstrated that patients with chicken wing LAA morphology were less likely to have an embolic event even after adjusting for comorbidities and CHADS2 score.


The Role of Magnetic Resonance Imaging and Cardiac Computed Tomography in the Assessment of Left Atrial Anatomy, Size, and Function.

Kuchynka P, Podzimkova J, Masek M, Lambert L, Cerny V, Danek B, Palecek T - Biomed Res Int (2015)

Contrast-enhanced CT image showing the most common subtype of left atrial appendage called chicken wing.
© Copyright Policy - open-access
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4508386&req=5

fig5: Contrast-enhanced CT image showing the most common subtype of left atrial appendage called chicken wing.
Mentions: The LAA has variable shapes and number of lobes. Four different shapes have been described: cactus, chicken wing (Figure 5), windsock, and cauliflower. The cactus shape is defined as a dominant central lobe with limited overall length and one or more secondary lobes; the chicken wing shape is defined as a main lobe that bends from the proximal middle part of the LAA; the windsock shape is characterized by one dominant lobe with several secondary, or even tertiary, lobes; and the cauliflower shape describes LAA morphology with limited overall length and complex internal structures [64]. The chicken wing shape seems to be the most common morphological subtype of the LAA according to a study by Di Biase et al. [65]. In the study, 932 patients with AF were investigated either by CT or CMR, and it was demonstrated that patients with chicken wing LAA morphology were less likely to have an embolic event even after adjusting for comorbidities and CHADS2 score.

Bottom Line: In the last decade, there has been increasing evidence that comprehensive evaluation of the left atrium is of utmost importance.Numerous studies have clearly demonstrated the prognostic value of left atrial volume for long-term outcome.Furthermore, advances in catheter ablation procedures used for the treatment of drug-refractory atrial fibrillation require the need for detailed knowledge of left atrial and pulmonary venous morphology as well of atrial wall characteristics.

View Article: PubMed Central - PubMed

Affiliation: Second Department of Medicine-Department of Cardiovascular Medicine, First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague, Prague, Czech Republic ; International Clinical Research Center, St. Anne's University Hospital in Brno, Brno, Czech Republic.

ABSTRACT
In the last decade, there has been increasing evidence that comprehensive evaluation of the left atrium is of utmost importance. Numerous studies have clearly demonstrated the prognostic value of left atrial volume for long-term outcome. Furthermore, advances in catheter ablation procedures used for the treatment of drug-refractory atrial fibrillation require the need for detailed knowledge of left atrial and pulmonary venous morphology as well of atrial wall characteristics. This review article discusses the role of cardiac magnetic resonance and computed tomography in assessment of left atrial size, its normal and abnormal morphology, and function. Special interest is paid to the utility of these rapidly involving noninvasive imaging methods before and after atrial fibrillation ablation.

No MeSH data available.


Related in: MedlinePlus