Assessment of regional myocardial strain by a novel automated tracking system from digital image files

Toyoda, Tomohiko; Baba, Hirotaka; Akasaka, Takashi; Akiyama, Maki; Neishi, Yoji; Tomita, Junko; Sukmawan, Renan; Koyama, Yuji; Watanabe, Nozomi; Tamano, Satoshi; Shinomura, Ryuichi; Komuro, Issei; Yoshida, Kiyoshi

doi:10.1016/j.echo.2004.07.010

Cited by 69 publications

(70 citation statements)

References 20 publications

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“…A novel computerized tissue-tracking system (TTS) that enables automatic tracking of displacement between two points of interest within myocardial tissues from gray-scale 2-D digital echo image files has been developed and validated in an open-chest dog study at our institution [9]. This non-tissue Doppler system automatically generates strain profiles from the change in distance between the two points over time in an entire cardiac cycle.…”

Section: Introductionmentioning

confidence: 99%

Automatic Quantification of Left Ventricular Systolic Wall Thickening Using Two-Dimensional Strain Assessed by a Novel Tissue-Tracking System

et al. 2005

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Background. A novel tissue-tracking system (TTS) that enables automatic assessment of two-dimensional (2-D) strain of left ventricle (LV) segments simultaneously from gray-scale digital echocardiography images has been validated in an animal study at our institution. We sought to define the application of TTS for automatic quantification of systolic wall thickening (WT) with a study in humans. Methods.We assessed 202 LV segments from 101 good and fair quality digital echo images acquired from 35 subjects. Radial strain was automatically derived from displacement between two points of interest placed at the epi-and endocardial borders of each segment. Peak radial strain at each segment was compared with manually measured systolic wall thickening.Results. There were good correlation and agreement between 2-D radial strain assessed by TTS and manually measured systolic WT in overall subjects (r = 0.89, p < 0.001). The correlation and agreements were better in good quality images (r = 0.94, p < 0.001) rather than that in fair quality images (r = 0.82, p < 0.001). Conclusion.The novel TTS provides a method for automatic quantification of human LV systolic wall thickening. (J Echocardiogr 2005; 3: 27-32)

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Section: Introductionmentioning

confidence: 99%

Automatic Quantification of Left Ventricular Systolic Wall Thickening Using Two-Dimensional Strain Assessed by a Novel Tissue-Tracking System

et al. 2005

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“…The TTS software is a pattern matching algorithm that tracks the change in distance between two points and automatically generates a two-dimensional strain graph. The concept and technical aspects of the algorithm have been described in detail by Toyoda et al [2].…”

Section: Echocardiographymentioning

confidence: 99%

“…First, because the TTS uses a pattern matching algorithm, errors contained in early frames may get amplified through the subsequent frames [2]. This makes the acquisition of high quality echocardiographic images essential, especially the first frame at end-diastole.…”

Section: Study Limitationsmentioning

confidence: 99%

“…However, previous studies in adults and animals validated the clinical utility of TTS data compared with strain measures obtained by MRI tagging [15] and sonomicrometry using ultrasonic crystals [2]. Full validation of TTS in a pediatric population is still desirable, though, and studies comparing TTSmeasured strain with conventional echocardiographic data, such as the change in internal diameter of the left ventricle using M-mode echocardiogram, should be performed.…”

Section: Study Limitationsmentioning

confidence: 99%

“…A tissue tracking system (TTS) that uses a pattern matching algorithm to track the change in distance between two points has recently been developed based on open chest studies in dogs [2], and this system automatically generates a two-dimensional strain graph. The clinical application of this system has yet to be fully realized, however.…”

Section: Introductionmentioning

confidence: 99%

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Myocardial Systolic Strain in Normal Children Using a Tissue Tracking System

et al. 2006

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Advanced echocardiographic techniques

Perry

Joseph

2012

Australas J Ultrason Med

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Echocardiography has advanced significantly since its first clinical use. The move towards more accurate imaging and quantification has driven this advancement. In this review, we will briefly focus on three distinct but important recent advances, three‐dimensional (3D) echocardiography, contrast echocardiography and myocardial tissue imaging. The basic principles of these techniques will be discussed as well as current and future clinical applications.

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Assessment of regional myocardial strain by a novel automated tracking system from digital image files

Cited by 69 publications

References 20 publications

Automatic Quantification of Left Ventricular Systolic Wall Thickening Using Two-Dimensional Strain Assessed by a Novel Tissue-Tracking System

Automatic Quantification of Left Ventricular Systolic Wall Thickening Using Two-Dimensional Strain Assessed by a Novel Tissue-Tracking System

Myocardial Systolic Strain in Normal Children Using a Tissue Tracking System

Advanced echocardiographic techniques

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