Assessment of wall velocity gradient imaging using a test phantom

Nowicki, Andrzej; Olszewski, Robert; Etienne, J.; Karlowicz, P.; Adamus, J

doi:10.1016/s0301-5629(96)00159-7

Cited by 9 publications

(3 citation statements)

References 9 publications

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“…The characteristics, performance and limitations of the algorithm from a signal processing perspective are discussed elsewhere [26,32]. The performance of the TDI technique has been evaluated using in-vitro test phantoms developed to assess the performance for measurements of the tissue motion of the myocardium [33]. Studies have also used in-vitro phantoms and flow models to assess accuracy, variability and reproducibility of the TDI AWM technique [34].…”

Section: Discussionmentioning

confidence: 99%

Tissue Doppler imaging of carotid plaque wall motion: a pilot study

Ramnarine

Hartshorne

Sensier

et al. 2003

Cardiovasc Ultrasound

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Background: Studies suggest the physical and mechanical properties of vessel walls and plaque may be of clinical value in the diagnosis and treatment of cardiovascular atherosclerotic disease. The purpose of this pilot study was to investigate the potential clinical application of ultrasound Tissue Doppler Imaging (TDI) of Arterial Wall Motion (AWM) and to quantify simple wall motion indices in normal and diseased carotid arteries.

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Section: Discussionmentioning

confidence: 99%

Tissue Doppler imaging of carotid plaque wall motion: a pilot study

Ramnarine

Hartshorne

Sensier

et al. 2003

Cardiovasc Ultrasound

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“…A number of anthropomorphic cardiac ultrasound phantoms have been proposed in the past. [26][27][28][29][30][31][32][33][34] The anthropomorphic cardiac phantom developed and employed in this study provided a simple anatomic representation of an adult human LV. More precisely, the phantom consisted of a cup-shaped (prolate-ellipsoid) tissue mimicking material (TMM) model of an adult human LV positioned along the elevation plane within a bloc of agar-based gelatin (Figure 1).…”

Section: Anthropomorphic Left Ventricle Phantommentioning

confidence: 99%

Elevational spatial compounding for enhancing image quality in echocardiography

et al. 2016

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IntroductionEchocardiography is commonly used in clinical practice for the real-time assessment of cardiac morphology and function. Nevertheless, due to the nature of the data acquisition, cardiac ultrasound images are often corrupted by a range of acoustic artefacts, including acoustic noise, speckle and shadowing. Spatial compounding techniques have long been recognised for their ability to suppress common ultrasound artefacts, enhancing the imaged cardiac structures. However, they require extended acquisition times as well as accurate spatio-temporal alignment of the compounded data. Elevational spatial compounding acquires and compounds adjacent partially decorrelated planes of the same cardiac structure.MethodsThis paper employs an anthropomorphic left ventricle phantom to examine the effect of acquisition parameters, such as inter-slice angular displacement and 3D sector angular range, on the elevational spatial compounding of cardiac ultrasound data.Results and conclusionElevational spatial compounding can produce substantial noise and speckle suppression as well as visual enhancement of tissue structures even for small acquisition sector widths (2.5° to 6.5°). In addition, elevational spatial compounding eliminates the need for extended acquisition times as well as the need for temporal alignment of the compounded datasets. However, moderate spatial registration may still be required to reduce any tissue/chamber blurring side effects that may be introduced.

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“…6 More specifically for DTI, test phantoms have been developed to gain better understanding of the measurement of velocities and velocity gradients. 7 McDicken et al first demonstrated a rotating tissue-equivalent phantom for use with Doppler ultrasound. 8 Moran et al showed the possibility of using the rotating tissue-equivalent phantom to test DTI.…”

Section: Introductionmentioning

confidence: 99%

A New Test Phantom for the Evaluation of Doppler Tissue Images

Murray¹,

Anderson²,

McDicken³

2004

Ultrasound

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Doppler tissue imaging (DTI) is a technique for examining the motion of moving tissue. It is particularly well suited for the examination of the motion of the myocardium and other cardiac structures. A new DTI test phantom has been designedand constructed that provides the means to evaluate the resolution of DTI images. The phantom consists of a rotating cylinder of tissue mimicking material (TMM) with a sectorshaped cut-out throughout its length. By evaluating the Doppler image of this moving structure, estimates of axial and lateral resolution can be obtained. The phantom was used to make resolution measurements of DTI images on three different ultrasound machines and to assess how machine settings affect resolution. The rotating phantom can also be used to measure contrast resolution, which is velocity resolution when considering DTI mode, and temporal resolution, which is essentially the scanner frame rate in DTI mode.

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Assessment of wall velocity gradient imaging using a test phantom

Cited by 9 publications

References 9 publications

Tissue Doppler imaging of carotid plaque wall motion: a pilot study

Tissue Doppler imaging of carotid plaque wall motion: a pilot study

Elevational spatial compounding for enhancing image quality in echocardiography

A New Test Phantom for the Evaluation of Doppler Tissue Images

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