What question did this study set out to answer?

To investigate the three-dimensional motion of left ventricular epicardial points in humans using various coordinate systems.

November 1, 1984Investigative Radiology

Three-Dimensional Left Ventricular Wall Motion in Man

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Why the study?

Does a moving spherical center-of-contraction coordinate system improve the representation of 3D left ventricular wall motion compared to other coordinate systems in human subjects?

Population

11 human subjects

Comparison

3D left ventricular wall motion analysis using a… vs Fixed and moving cylindrical, fixed spherical…

Design

Other

Authors

MPMichael J. PotelUniversity of Chicago SMSteven A. MacKayUniversity of Chicago JRJonathan M. RubinUniversity of Michigan

Discussion

Member takes

Implication

May improve 3D LV wall motion analysis; hypothesis-generating and should not change practice.

Key Points

To investigate the three-dimensional motion of left ventricular epicardial points in humans using various coordinate systems.
Analyzed 3D motion of left ventricular epicardial points by tracking coronary artery bifurcations in eleven human subjects.
Compared fixed and moving spherical and cylindrical coordinate systems to assess wall motion.
Decomposed 3D motions into directional components to evaluate their effectiveness.
Average radial motions were higher in moving spherical COC (91%) compared to fixed systems (35% and 47% for COG and COC, respectively).
Spherical systems were superior to cylindrical systems in analyzing wall motion directions.
Approximately 25% of the 3D wall motion is not captured in conventional monoplane views.

Structured PICO

Does a moving spherical center-of-contraction coordinate system improve the representation of 3D left ventricular wall motion compared to other coordinate systems in human subjects?

Population

11 human subjects

Intervention

3D left ventricular wall motion analysis using a moving spherical center-of-contraction (COC) coordinate system

Comparator

Fixed and moving cylindrical, fixed spherical center-of-gravity (COG), fixed spherical COC, and moving spherical COG coordinate systems

Outcome

Percentage of radial (in and out) motionsurrogate

A moving spherical center-of-contraction coordinate system captures 91% of 3D left ventricular wall motion as radial, demonstrating a near-perfect model for heart wall motion analysis.

Cite This Study

Potel et al. (1984) studied this question.

synapsesocial.com/papers/6a711e89a528af2d65c3eb78 https://doi.org/10.1097/00004424-198411000-00006

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Three-Dimensional Left Ventricular Wall Motion in Man

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Three-Dimensional Left Ventricular Wall Motion in Man

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

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Also Consider