New TDI developments for vascular and cardiac applications

Bonnefous, O.; Criton, Aline; Germond, L.; Denis, Effoh Ndrin

doi:10.1109/ultsym.2000.921558

Cited by 9 publications

(3 citation statements)

References 2 publications

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“…Changes in the ratio of collagen to elastin in the extracellular matrix of the arterial media is one of the causes of arterial stiffness [2][3][4] . Previous attempts at noninvasive vascular elasticity imaging include arterial wall motion estimation [5][6][7][8] , intraparietal strain imaging [9] and pulse wave velocity measurement [10,11] . Arterial compliance measurement was also conducted by monitoring internal pulsatile deformation in tissues surrounding the normal brachial artery [12] .…”

Section: Introductionmentioning

confidence: 99%

Renal Advances in Ultrasound Elasticity Imaging: Measuring the Compliance of Arteries and Kidneys in End-Stage Renal Disease

et al. 2005

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Background/Aims: Ultrasound elasticity imaging visually represents tissue hardness measurements using high-resolution ultrasound speckle-tracking algorithms. This method has recently been applied in the renal setting to measure arterial compliance in end-stage renal disease (ESRD) and the mechanical properties of transplant kidneys in vivo. Methods: Ultrasound radio-frequency signal measurements were made of the brachial artery in 5 ESRD subjects and 5 healthy controls and renal transplant measurements in 2 subjects, 1 with chronic allograft nephropathy (CAN) and 1 with normal graft function. Results: Maximal brachial artery percent strain measurements for healthy controls were 32.9 ± 10.2% (mean ± SD) and for ESRD subjects maximal percent strains were 4.9 ± 1.8%. Transplant renal cortical strain for the subject with CAN was approximately one third that of the healthy transplant recipient. Conclusion: Ultrasound elasticity imaging offers the potential to noninvasively measure the mechanical properties of structures within the body.

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Section: Introductionmentioning

confidence: 99%

Renal Advances in Ultrasound Elasticity Imaging: Measuring the Compliance of Arteries and Kidneys in End-Stage Renal Disease

et al. 2005

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“…Elasticity imaging has the potential for high‐resolution noninvasive monitoring and characterization of vascular pathologies by measuring mechanical properties. Previous attempts at noninvasive vascular elasticity imaging include arterial wall‐motion estimation (1–4), intraparietal strain imaging (5), and pulse‐wave velocity measurement (6,7). Arterial compliance measurement has also been conducted by monitoring internal pulsatile deformation in tissues surrounding the normal brachial artery (8).…”

mentioning

confidence: 99%

High‐Resolution Ultrasound Elasticity Imaging to Evaluate Dialysis Fistula Stenosis

Weitzel

Kim

Park

et al. 2009

Seminars in Dialysis

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Accurate, noninvasive characterization of arterial wall mechanics and detection of fibrotic vascular lesions could vastly improve the ability to predict patient response to local treatments such as angioplasty. Current imaging and other techniques for determining wall compliance rely on imprecise or indirect estimates of wall motion. This study used high-resolution ultrasound imaging with phasesensitive speckle tracking to obtain detailed and direct measurements of arterial stiffness in two subjects with dialysis fistula dysfunction. In both subjects, the absolute values of strain were much higher in normal regions of fistula than in regions of stenosis. The lower values of strain in stenotic fistula indicate greater stiffness of the vessel wall. The ultrasound speckle tracking technique used here may have potential to determine vascular mechanical properties noninvasively with a level of precision and accuracy not currently available.

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“…Arterial wall motion is expressed using the distension versus time waveform (referred to hereafter as the distension waveform) and may be measured using B-mode images (Selzer et al 2001;Graf et al 1999;Golemati et al 2003), with M-mode RF data by phase-locked-loop tracking (Hansen et al 1995;Ahlgren et al 1997) and with the integration of tissue Doppler imaging (TDI) velocity estimates (Bonnefous et al 2000a(Bonnefous et al , 2000bEriksson et al 2002).…”

Section: Introductionmentioning

confidence: 99%

Factors Affecting the Arterial Distension Waveform Derived from Tissue Doppler Imaging (TDI): An In Vitro Study on Precision

Dineley

McDicken

Hoskins

2007

Ultrasound in Medicine & Biology

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New TDI developments for vascular and cardiac applications

Cited by 9 publications

References 2 publications

Renal Advances in Ultrasound Elasticity Imaging: Measuring the Compliance of Arteries and Kidneys in End-Stage Renal Disease

Renal Advances in Ultrasound Elasticity Imaging: Measuring the Compliance of Arteries and Kidneys in End-Stage Renal Disease

High‐Resolution Ultrasound Elasticity Imaging to Evaluate Dialysis Fistula Stenosis

Factors Affecting the Arterial Distension Waveform Derived from Tissue Doppler Imaging (TDI): An In Vitro Study on Precision

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