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Bands, Chords, Tendons, and Membranes in the Heart: An Imaging Overview
Ameya Jagdish Baxi1, Sina Tavakoli1, Daniel Vargas2
1Department of Radiology, University of Texas Health Science Center at San Antonio, San Antonio, TX.
Insights
Cardiac structures like bands and membranes can be incidental or cause hemodynamic disturbance. Advanced imaging aids in diagnosing these conditions and planning treatment.
Area of Science:
- Cardiology
- Radiology
- Anatomical Pathology
Background:
- Cardiac chambers contain various structures including crests, bands, chords, and membranes.
- These structures can be asymptomatic or lead to significant hemodynamic disturbances.
- Accurate diagnosis requires understanding normal variants and pathological features.
Purpose of the Study:
- To review cross-sectional cardiac imaging findings.
- To differentiate normal anatomical variants from pathological bands, chords, or membranes.
- To highlight imaging features associated with hemodynamic changes.
Main Methods:
- Utilizing newer generation computed tomographic (CT) scanners.
- Employing faster magnetic resonance imaging (MRI) sequences.
- Acquiring high-resolution images of cardiac chambers.
Main Results:
- Advanced CT and MRI provide high spatial and temporal resolution.
- Improved identification of small internal cardiac structures like papillary muscles, muscular bands, chords, and membranes.
- Facilitation of diagnosis for associated complications and malformations.
Conclusions:
- Cross-sectional imaging is crucial for diagnosing cardiac chamber abnormalities.
- Distinguishing normal variants from pathological structures is key for patient management.
- Advanced imaging aids in treatment planning for hemodynamic disturbances.
Abstract:
Crests, bands, chords, and membranes can be seen within the different cardiac chambers, with variable clinical significance. They can be incidental or can have clinical implications by causing hemodynamic disturbance. It is crucial to know the morphology and orientation of normal structures, aberrant or accessory muscles, and abnormal membranes to diagnose the hemodynamic disturbance associated with them. Newer generation computed tomographic scanners and faster magnetic resonance imaging sequences offer high spatial and temporal resolution allowing for acquisition of high resolution images of the cardiac chambers improving identification of small internal structures, such as papillary muscles, muscular bands, chords, and membranes. They also help in identification of other associated complications, malformations, and provide a road map for treatment. In this article, we review cross-sectional cardiac imaging findings of normal anatomical variants and distinctive imaging features of pathologic bands, chords, or membranes, which may produce significant hemodynamic changes and clinical symptomatology.
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