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Myocardial motion analysis based on an optical flow method using tagged MR images

Overview of attention for article published in Radiological Physics and Technology, April 2018
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Title
Myocardial motion analysis based on an optical flow method using tagged MR images
Published in
Radiological Physics and Technology, April 2018
DOI 10.1007/s12194-018-0456-3
Pubmed ID
Authors

Daiki Tabata, Haruo Isoda, Kaori Kato, Hiroki Matsubara, Takafumi Kosugi, Takashi Kosugi, Masaki Terada, Atsushi Fukuyama, Yoshiaki Komori, Shinji Naganawa

Abstract

We developed a method of velocimetry based on an optical flow method using quantitative analyses of tagged magnetic resonance (MR) images (tagged MR-optical flow velocimetry, tMR-O velocimetry). The purpose of our study was to examine the accuracy of measurement of the proposed tMR-O velocimetry. We performed retrospective pseudo-electrocardiogram (ECG) gating tagged cine MR imaging on a rotating phantom. We optimized imaging parameters for tagged MR imaging, and validated the accuracy of tMR-O velocimetry. Our results indicated that the difference between the reference velocities and the computed velocities measured using optimal imaging parameters was less than 1%. In addition, we performed tMR-O velocimetry and echocardiography on 10 healthy volunteers, for four sections of the heart (apical, midventricular, and basal sections aligned with the short-axis, and a four-chamber section aligned with the long-axis), and obtained radial and longitudinal myocardial velocities in these sections. We compared the myocardial velocities obtained using tMR-O velocimetry with those obtained using echocardiography. Our results showed good agreement between tMR-O velocimetry and echocardiography in the radial myocardial velocities in three short-axial sections and longitudinal myocardial velocities on the midventricular portion of the four-chamber section in the long-axis. In the study conducted on the rotating phantom, tMR-O velocimetry showed high accuracy; moreover, in the healthy volunteers, the myocardial velocities obtained using tMR-O velocimetry were relatively similar to those obtained using echocardiography. In conclusion, tMR-O velocimetry is a potentially feasible method for analyzing myocardial motion in the human heart.

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Geographical breakdown

Country Count As %
Unknown 2 100%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 1 50%
Unspecified 1 50%
Readers by discipline Count As %
Unspecified 1 50%
Computer Science 1 50%

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 27 September 2018.
All research outputs
#12,028,063
of 13,565,336 outputs
Outputs from Radiological Physics and Technology
#32
of 41 outputs
Outputs of similar age
#228,610
of 265,181 outputs
Outputs of similar age from Radiological Physics and Technology
#3
of 4 outputs
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