Bands, Chords, Tendons, and Membranes in the Heart: An Imaging Overview

Baxi, Ameya; Tavakoli, Sina; Vargas, Daniel; Restrepo, Carlos S.

doi:10.1067/j.cpradiol.2015.08.009

Cited by 6 publications

(6 citation statements)

References 70 publications

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“…Taenia sagittalis is considered to be a remnant of the septum spurium, similar to that of the crista terminalis (24), and forms the internal bridge of the sulcus terminalis. While the taenia sagittalis is absent in 15%-20% of the population (type A), it is present as a single band in 55%-65% (type B) and as multiple linear bands in 20%-25% (type C) (23).…”

Section: Taenia Sagittalismentioning

confidence: 99%

“…It provides support to the anterolateral papillary muscle, guides blood from the RV inflow tract to the outflow tract, and prevents RV overdistention, especially in cases of RV infarction. It contains the right bundle branch (24) and may be a source of ventricular tachycardia (24,42), as well as accessory atriofascicular pathways, which can cause Mahaim tachycardia (40). Anastomoses of the anterior interventricular branch of the left anterior descending artery, which supplies the moderator band with septal branches of the right coronary artery (RCA), offers collateral routes in RCA occlusion (43).…”

Section: Moderator Bandmentioning

confidence: 99%

“…The tethering of the AML leads to mitral prolapse and regurgitation. Accessory chordal attachment can also be associated in 18%-85% of patients with an isolated cleft in the AML, without an endocardial cushion defect or VSD (24,60). This entity is associated with Down syndrome, Noonan syndrome, trisomy 18 syndrome, and VSD (61).…”

Section: Accessory Chordae Tendineaementioning

confidence: 99%

“…At CT and MRI, the band has the same signal intensity, attenuation, and enhancement as those of the myocardium, with outpouching of the LV apex or lateral wall. Two parallel chambers are depicted, contracting synchronously in systole and diastole, which distinguishes it from an aneurysm or pseudoaneurysm (24,87,88) (Fig 22).…”

Section: Double-chambered LVmentioning

confidence: 99%

“…Short-segment obstruction is more common and also progressive and associated with congenital heart disease (24). Clinical symptoms are related to the degree of obstruction and include chest pain, dyspnea, arrhythmia, and syncope.…”

Section: Subaortic Stenosismentioning

confidence: 99%

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Bands in the Heart: Multimodality Imaging Review

et al. 2019

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Multiple bands and bandlike structures can be found within the cardiac chambers, which can be evaluated with various imaging modalities including echocardiography, CT, MRI, and invasive angiography. These bands can be classified as normal structures or normal variants, aberrant structures, or pathologic entities. Normal structures include the crista terminalis, taenia sagittalis, Chiari network, coumadin ridge, moderator band, papillary muscles, and chordae tendineae. Aberrant structures include aberrant papillary muscles, accessory chordae, false tendons, and accessory mitral valve tissue. Pathologic entities include double-chambered right ventricle, double-chambered left ventricle, cor triatriatum, and subaortic stenosis. Several types of bands are incidental findings discovered at imaging and do not produce clinical symptoms. However, some bands can mimic cardiac diseases, including masses. More importantly, some bands are pathologic entities that produce symptoms owing to hemodynamic consequences. Performing multimodality imaging helps the radiologist (a) identify, localize, and characterize the bands; (b) determine if they are normal structures, abnormal structures, or pathologic entities; (c) distinguish them from cardiac pathologic conditions; and (d) evaluate the secondary consequences of pathologic entities. This article reviews the various bands visualized within the cardiac chambers, as well as the role of imaging in depicting the bands, their appearances across various imaging modalities, and their clinical significance.

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Section: Taenia Sagittalismentioning

confidence: 99%