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Two-dimensional speckle tracking for quantification of left ventricular circumferential and radial wall motion in horses

Annelies Decloedt UGent, Tinne Verheyen UGent, Stanislas Sys UGent, Dominique De Clercq UGent and Gunther van Loon UGent (2013) EQUINE VETERINARY JOURNAL. 45(1). p.47-55
abstract
Reasons for performing study: The use of two-dimensional speckle tracking (2DST) for quantification of left ventricular (LV) function has recently been described in horses using long-axis images and short-axis images at chordal but not at papillary muscle level. Objectives: To compare the feasibility and reliability of 2DST for quantification of circumferential and radial LV function in short-axis images at papillary muscle and chordal level. Methods: Repeated echocardiographic examinations were performed on ten healthy trotter horses by two observers from a right parasternal short-axis view at papillary muscle and chordal level. Segmental and averaged peak values and timing of circumferential and radial strain and strain rate, radial displacement and rotation were measured in six LV wall segments in each imaging plane. Global peak values were calculated for circumferential strain and strain rate. The inter- and intra-observer within- and between-day variability was assessed by calculating coefficients of variation for repeated measurements. Results: 2DST analysis was feasible in each cardiac cycle although tracking was often inadequate during early diastole. Measurements of averaged systolic circumferential and radial strain and strain rate and radial displacement as well as global circumferential strain and strain rate could be determined with low variability. Early and late diastolic strain rate and systolic rotation showed a moderate variability. Radial segmental measurements were more reliable than circumferential measurements. The interventricular septum showed a higher circumferential and lower radial strain compared to the LV free wall. Peak timing was earlier at papillary muscle compared to chordal level. Conclusions: 2DST measurements of global and regional circumferential and radial LV wall motion are feasible both at papillary muscle and chordal level. Potential relevance: Several measurements showed good reliability and can be used when evaluating the technique in a clinical setting.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
cardiology, echocardiography, horse, myocardial function, STRAIN-RATE, STRESS-ECHOCARDIOGRAPHY, MYOCARDIAL DYSFUNCTION, HEALTHY HORSES, VELOCITY, DISPLACEMENT, DYSSYNCHRONY, QUANTITATION, DEFORMATION, VALIDATION
journal title
EQUINE VETERINARY JOURNAL
Equine Vet. J.
volume
45
issue
1
pages
47 - 55
Web of Science type
Article
Web of Science id
000312294300013
JCR category
VETERINARY SCIENCES
JCR impact factor
2.369 (2013)
JCR rank
7/132 (2013)
JCR quartile
1 (2013)
ISSN
0425-1644
DOI
10.1111/j.2042-3306.2012.00549.x
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
2090419
handle
http://hdl.handle.net/1854/LU-2090419
date created
2012-04-18 14:20:28
date last changed
2013-01-21 13:28:57
@article{2090419,
  abstract     = {Reasons for performing study: The use of two-dimensional speckle tracking (2DST) for quantification of left ventricular (LV) function has recently been described in horses using long-axis images and short-axis images at chordal but not at papillary muscle level.
Objectives: To compare the feasibility and reliability of 2DST for quantification of circumferential and radial LV function in short-axis images at papillary muscle and chordal level.
Methods: Repeated echocardiographic examinations were performed on ten healthy trotter horses by two observers from a right parasternal short-axis view at papillary muscle and chordal level. Segmental and averaged peak values and timing of circumferential and radial strain and strain rate, radial displacement and rotation were measured in six LV wall segments in each imaging plane. Global peak values were calculated for circumferential strain and strain rate. The inter- and intra-observer within- and between-day variability was assessed by calculating coefficients of variation for repeated measurements.
Results: 2DST analysis was feasible in each cardiac cycle although tracking was often inadequate during early diastole. Measurements of averaged systolic circumferential and radial strain and strain rate and radial displacement as well as global circumferential strain and strain rate could be determined with low variability. Early and late diastolic strain rate and systolic rotation showed a moderate variability. Radial segmental measurements were more reliable than circumferential measurements. The interventricular septum showed a higher circumferential and lower radial strain compared to the LV free wall. Peak timing was earlier at papillary muscle compared to chordal level.
Conclusions: 2DST measurements of global and regional circumferential and radial LV wall motion are feasible both at papillary muscle and chordal level. 
Potential relevance: Several measurements showed good reliability and can be used when evaluating the technique in a clinical setting.},
  author       = {Decloedt, Annelies and Verheyen, Tinne and Sys, Stanislas and De Clercq, Dominique and van Loon, Gunther},
  issn         = {0425-1644},
  journal      = {EQUINE VETERINARY JOURNAL},
  keyword      = {cardiology,echocardiography,horse,myocardial function,STRAIN-RATE,STRESS-ECHOCARDIOGRAPHY,MYOCARDIAL DYSFUNCTION,HEALTHY HORSES,VELOCITY,DISPLACEMENT,DYSSYNCHRONY,QUANTITATION,DEFORMATION,VALIDATION},
  language     = {eng},
  number       = {1},
  pages        = {47--55},
  title        = {Two-dimensional speckle tracking for quantification of left ventricular circumferential and radial wall motion in horses},
  url          = {http://dx.doi.org/10.1111/j.2042-3306.2012.00549.x},
  volume       = {45},
  year         = {2013},
}

Chicago
Decloedt, Annelies, Tinne Verheyen, Stanislas Sys, Dominique De Clercq, and Gunther van Loon. 2013. “Two-dimensional Speckle Tracking for Quantification of Left Ventricular Circumferential and Radial Wall Motion in Horses.” Equine Veterinary Journal 45 (1): 47–55.
APA
Decloedt, A., Verheyen, T., Sys, S., De Clercq, D., & van Loon, G. (2013). Two-dimensional speckle tracking for quantification of left ventricular circumferential and radial wall motion in horses. EQUINE VETERINARY JOURNAL, 45(1), 47–55.
Vancouver
1.
Decloedt A, Verheyen T, Sys S, De Clercq D, van Loon G. Two-dimensional speckle tracking for quantification of left ventricular circumferential and radial wall motion in horses. EQUINE VETERINARY JOURNAL. 2013;45(1):47–55.
MLA
Decloedt, Annelies, Tinne Verheyen, Stanislas Sys, et al. “Two-dimensional Speckle Tracking for Quantification of Left Ventricular Circumferential and Radial Wall Motion in Horses.” EQUINE VETERINARY JOURNAL 45.1 (2013): 47–55. Print.