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Related Concept Videos

Mesh Analysis01:20

Mesh Analysis

1.5K
Mesh analysis is a valuable method for simplifying circuit analysis using mesh currents as key circuit variables. Unlike nodal analysis, which focuses on determining unknown voltages, mesh analysis applies Kirchhoff's voltage law (KVL) to find unknown currents within a circuit. This method is particularly convenient in reducing the number of simultaneous equations that need to be solved.
A fundamental concept in mesh analysis is the definition of meshes and mesh currents. A mesh is a closed...
1.5K
Dimensional Analysis03:40

Dimensional Analysis

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Dimensional analysis, also known as the factor label method, is a versatile approach for mathematical operations. The main principle behind this approach is: the units of quantities must be subjected to the same mathematical operations as their associated numbers. This method can be applied to computations ranging from simple unit conversions to more complex and multi-step calculations involving several different quantities and their units.
Conversion Factors and Dimensional Analysis
The unit...
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Dimensional Analysis01:27

Dimensional Analysis

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Dimensional analysis is a valuable technique in fluid mechanics for simplifying complex problems by reducing them into dimensionless groups. These groups capture the essential relationships between the variables involved, allowing researchers and engineers to analyze fluid flow without dealing with each variable individually. This approach reduces the number of independent variables, allowing for easier analysis and better understanding of physical phenomena.
In fluid mechanics, dimensional...
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Dimensional Analysis01:23

Dimensional Analysis

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Dimensional analysis is a powerful tool that is used in physics and engineering to understand and predict the behavior of physical systems. The basic idea behind dimensional analysis is to express physical quantities in terms of fundamental dimensions such as the mass, length, and time. Derived dimensions like the velocity, acceleration, and force are derived from the combinations of these fundamental dimensions.
Dimensional analysis allows us to analyze and compare physical quantities on a...
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Dimensional Analysis02:19

Dimensional Analysis

23.9K
The concept of dimension is important because every mathematical equation linking physical quantities must be dimensionally consistent, implying that mathematical equations must meet the following two rules. The first rule is that, in an equation, the expressions on each side of the equal sign must have the same dimensions. This is fairly intuitive since we can only add or subtract quantities of the same type (dimension). The second rule states that, in an equation, the arguments of any of the...
23.9K
Mesh Analysis with Current Sources01:10

Mesh Analysis with Current Sources

2.0K
Mesh analysis becomes simpler when analyzing circuits with current sources, whether independent or dependent. The presence of current sources reduces the number of equations required for analysis. Two cases illustrate this:
Current Source in One Mesh: The analysis process is straightforward when a current source is found in only one mesh within the circuit. Mesh currents are assigned as usual, with the mesh containing the current source excluded from the analysis. Kirchhoff's voltage law...
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Related Experiment Video

Updated: Jan 27, 2026

Evaluation of Left Ventricular Structure and Function using 3D Echocardiography
06:34

Evaluation of Left Ventricular Structure and Function using 3D Echocardiography

Published on: October 28, 2020

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Regional Right Ventricular Volume and Function Analysis Using Intraoperative 3-Dimensional Echocardiography-Derived

Martina Nowak-Machen1, Tobias Lang2, Andreas Schilling2

  • 1Department of Anesthesiology and Intensive Care Medicine, University Hospital Tübingen, Eberhard-Karls-University Tübingen, Tübingen, Germany.

Journal of Cardiothoracic and Vascular Anesthesia
|March 15, 2019
PubMed
Summary

Three-dimensional echocardiography reveals distinct regional ejection fractions in the right ventricle (RV). The RV outflow tract shows reduced function, especially in patients with impaired left ventricular function, aiding in understanding RV pathologies.

Keywords:
3-dimensionalanesthesiologyechocardiographyregional functionright ventricle

More Related Videos

Assessment of Right Ventricular Structure and Function in Mouse Model of Pulmonary Artery Constriction by Transthoracic Echocardiography
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Morphological and Functional Assessment of the Right Ventricle Using 3D Echocardiography
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Related Experiment Videos

Last Updated: Jan 27, 2026

Evaluation of Left Ventricular Structure and Function using 3D Echocardiography
06:34

Evaluation of Left Ventricular Structure and Function using 3D Echocardiography

Published on: October 28, 2020

4.6K
Assessment of Right Ventricular Structure and Function in Mouse Model of Pulmonary Artery Constriction by Transthoracic Echocardiography
10:33

Assessment of Right Ventricular Structure and Function in Mouse Model of Pulmonary Artery Constriction by Transthoracic Echocardiography

Published on: February 3, 2014

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Morphological and Functional Assessment of the Right Ventricle Using 3D Echocardiography
07:11

Morphological and Functional Assessment of the Right Ventricle Using 3D Echocardiography

Published on: October 28, 2020

3.3K

Area of Science:

  • Cardiology
  • Medical Imaging
  • Echocardiography

Background:

  • Traditional 2D echocardiography uses surrogate parameters for right ventricular (RV) function assessment.
  • 3D echocardiography offers validated RV assessment, with growing interest in regional function.
  • Regional RV function analysis is crucial for understanding complex cardiac conditions.

Purpose of the Study:

  • To calculate regional volumetric changes in the RV inlet, apical section, and outflow tract.
  • To correlate traditional RV function parameters with regional RV function.
  • To investigate the impact of reduced left ventricular ejection fraction on regional RV function.

Main Methods:

  • Retrospective cohort study of 80 patients undergoing cardiac surgery at a tertiary care university hospital.
  • Generation of RV mesh models from 3D echocardiographic datasets on a vendor-independent platform.
  • Division of RV meshes into inlet, apical, and outflow tract regions for volumetric and ejection fraction analysis.

Main Results:

  • Regional RV volumes correlated linearly with global end-diastolic volume.
  • The RV outflow tract exhibited a significantly lower ejection fraction (28% ± 11%) compared to the RV inlet part (34% ± 11%).
  • RV outflow tract function was significantly reduced in patients with severely reduced left ventricular ejection fraction (<20%).

Conclusions:

  • Different regions of the right ventricle demonstrate varying ejection fractions.
  • Reduced left ventricular ejection fraction disproportionately affects specific RV regions.
  • Regional RV analysis provides valuable insights into RV pathophysiology and clinical assessment.