Limits...
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 demonstrating a diverticulum (arrow) at the lateral part of the left atrium, close to the mitral valve.
© Copyright Policy - open-access
Related In: Results  -  Collection


getmorefigures.php?uid=PMC4508386&req=5

fig6: Contrast-enhanced CT image demonstrating a diverticulum (arrow) at the lateral part of the left atrium, close to the mitral valve.

Mentions: Apart from abnormalities of the interatrial septum, the most common morphological variations of the LA are diverticula (Figure 6) and accessory appendages. Diverticula are defined as cyst-shaped protuberances that project outward from the heart cavity and are composed of a single muscular layer. The prevalence of diverticula ranges between 18% and 41% of subjects undergoing cardiac CT imaging, with a mean diverticular diameter of 4–6 mm [67]. The most common location of diverticula is the anterosuperior portion of the LA. The pathophysiology of their development is not clearly understood. It is hypothesized that they may be congenital, associated with incomplete development of accessory pulmonary veins or incomplete regression of cardinal veins, or they may be acquired, associated with ischemic heart disease or other heart pathologies. Diverticula are generally asymptomatic, although an association with thromboembolism and arrhythmias has been also reported [67].


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 demonstrating a diverticulum (arrow) at the lateral part of the left atrium, close to the mitral valve.
© Copyright Policy - open-access
Related In: Results  -  Collection

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

fig6: Contrast-enhanced CT image demonstrating a diverticulum (arrow) at the lateral part of the left atrium, close to the mitral valve.
Mentions: Apart from abnormalities of the interatrial septum, the most common morphological variations of the LA are diverticula (Figure 6) and accessory appendages. Diverticula are defined as cyst-shaped protuberances that project outward from the heart cavity and are composed of a single muscular layer. The prevalence of diverticula ranges between 18% and 41% of subjects undergoing cardiac CT imaging, with a mean diverticular diameter of 4–6 mm [67]. The most common location of diverticula is the anterosuperior portion of the LA. The pathophysiology of their development is not clearly understood. It is hypothesized that they may be congenital, associated with incomplete development of accessory pulmonary veins or incomplete regression of cardinal veins, or they may be acquired, associated with ischemic heart disease or other heart pathologies. Diverticula are generally asymptomatic, although an association with thromboembolism and arrhythmias has been also reported [67].

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