The Cardiac MR Images and Causes of Paradoxical Septal Motion

Kim, Dong Hun; Choi, Sang Il; Chun, Eun Ju; Choi, Sung Hun; Park, Jae Hyung

doi:10.3348/jksr.2010.62.5.427

Cited by 3 publications

(5 citation statements)

References 15 publications

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“…The systolic motion of the septum to the left happens while the normal configuration is maintained. However, it has been observed in previous studies in patients with right ventricular volume overload that the septum flattens and the convexity may be reversed to be toward the left (30,31). Vorticity was correlated with mode 4 which expressed the septal paradoxical motion.…”

Section: Discussionmentioning

confidence: 71%

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Right Ventricular Flow Vorticity Relationships With Biventricular Shape in Adult Tetralogy of Fallot

Elsayed

Mauger²,

Ferdian³

et al. 2022

Front. Cardiovasc. Med.

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Remodeling in adults with repaired tetralogy of Fallot (rToF) may occur due to chronic pulmonary regurgitation, but may also be related to altered flow patterns, including vortices. We aimed to correlate and quantify relationships between vorticity and ventricular shape derived from atlas-based analysis of biventricular shape. Adult rToF (n = 12) patients underwent 4D flow and cine MRI imaging. Vorticity in the RV was computed after noise reduction using a neural network. A biventricular shape atlas built from 95 rToF patients was used to derive principal component modes, which were associated with vorticity and pulmonary regurgitant volume (PRV) using univariate and multivariate linear regression. Univariate analysis showed that indexed PRV correlated with 3 modes (r = −0.55,−0.50, and 0.6, all p < 0.05) associated with RV dilatation and an increase in basal bulging, apical bulging and tricuspid annulus tilting with more severe regurgitation, as well as a smaller LV and paradoxical movement of the septum. RV outflow and inflow vorticity were also correlated with these modes. However, total vorticity over the whole RV was correlated with two different modes (r = −0.62,−0.69, both p < 0.05). Higher vorticity was associated with both RV and LV shape changes including longer ventricular length, a larger bulge beside the tricuspid valve, and distinct tricuspid tilting. RV flow vorticity was associated with changes in biventricular geometry, distinct from associations with PRV. Flow vorticity may provide additional mechanistic information in rToF remodeling. Both LV and RV shapes are important in rToF RV flow patterns.

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Section: Discussionmentioning

confidence: 71%

“…The normal septum is convex toward the right ventricle with the left being a thicker rounder ventricle (30). The systolic motion of the septum to the left happens while the normal configuration is maintained.…”

Section: Discussionmentioning

confidence: 99%

Right Ventricular Flow Vorticity Relationships With Biventricular Shape in Adult Tetralogy of Fallot

Elsayed

Mauger²,

Ferdian³

et al. 2022

Front. Cardiovasc. Med.

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“…이러한 비탄력적인 심막은 우심실 좌심실이 따로 움직이지 않도록 하며 이를 심실 커플링(ventricular coupling) 내지는 심실 상호의존(ventricular interdependence)이라고 한다( 1 2 3 ). 정상적으로는 좌심실의 이완기 압력이 우심실 보다 약간 높으므로 심실 중격이 오른쪽 심장으로 약간 불거진 모양을 보이나 병적인 경우 즉 우심실 부피나 압력이 증가하거나 심장막 내 압력이 증가하는 경우 중격이 납작하거나 반대로 불룩할 수 있다( 3 6 ). 심낭(pericardial sac)은 약간의 음압(negative pressure)을 가지며 주변 흉부의 장기들과 해부학적으로 구분되나 기능적으로는 상호작용을 하게 된다( 1 ).…”

Section: 서론unclassified

“…정상인 경우 흡기 시 흉곽 내 압력이 떨어지고 이는 전신 정맥 환류s(ystemic venous return)와 우심실 충만(right ventricle filling)을 증가시키는 반면 좌심실 충만은 별 영향을 받지 않는다. 호기 시에는 반대로 흉강 내 압력이 증가하고 폐정맥 환류(pulmonary venous return)와 좌심실 충만(left ventricle filling)을 증가시키고 전신 정맥 환류 및 우심실 충만을 감소시킨다( 3 6 ). 교착성 심막염같이 심막에 이상이 있는 경우 호흡 시 흉곽 내 압력변화가 심장 내로 전해지는게 방해받아 심실 충만에 문제가 생기게 된다( Fig.…”

Section: 서론unclassified

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Noninvasive Imaging of Pericardium

이

2020

J Korean Soc Radiol

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The clinical manifestation of pericardial disease is similar to that of coronary artery disease and aortic disease. Therefore, a timely and accurate diagnosis is necessary. The pericardium is a 2-layered membrane that envelops the heart and great vessels, and there are numerous anatomic variations and pathologic conditions. Large or unusually located pericardial recesses can be easily mistaken for abnormal findings. Additionally, primary pericardial diseases resulting from infections, tumors, and injuries are possible; further, diseases can quickly spread along the pericardium. Echocardiography is generally the first imaging tool used to evaluate the pericardium. However, it has limited windows and poor resolution. Besides, the evaluation of postoperative echocardiography is sometimes limited. Currently, CT and MR imaging are useful for evaluating pericardial diseases. Detailed knowledge of the pericardium is important for interpreting the images and clinical results.

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Abnormal Motion Patterns of the Interventricular Septum

Dwivedi

Axel²

2017

JACC: Cardiovascular Imaging

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The Cardiac MR Images and Causes of Paradoxical Septal Motion

Cited by 3 publications

References 15 publications

Right Ventricular Flow Vorticity Relationships With Biventricular Shape in Adult Tetralogy of Fallot

Right Ventricular Flow Vorticity Relationships With Biventricular Shape in Adult Tetralogy of Fallot

Noninvasive Imaging of Pericardium

Abnormal Motion Patterns of the Interventricular Septum

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