Estimation of arterial pulse wave velocity with a new improved tissue Doppler method

Persson, Magnus; Eriksson, Anders; Persson, Henry; Lindström, Kjell

doi:10.1109/iembs.2001.1018884

Cited by 10 publications

(9 citation statements)

References 15 publications

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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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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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“…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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“…Previous attempts at non-invasive vascular elasticity imaging include vessel-wall motion estimation20–23 and pulse-wave velocity measurement 24,25. Within limits, these measurements have correlated with clinical events, including stroke26 and claudication symptoms21 in non-ESRD (end-stage renal disease) patients and adverse cardiovascular events in patients with ESRD,27,28 as well as length of time on dialysis 22.…”

Section: Discussionmentioning

confidence: 99%

High-resolution Ultrasound Speckle Tracking May Detect Vascular Mechanical Wall Changes in Peripheral Artery Bypass Vein Grafts

Weitzel

Kim

Henke

et al. 2009

Annals of Vascular Surgery

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We report the use of high-resolution, phase-sensitive ultrasound speckle tracking to measure the local vessel-wall strain in two subjects with artery-vein bypass grafts. In addition, we combined this technique with a free-hand pressure equalization procedure to elucidate the non-linear effects of blood pressure on vessel wall compliance. While conventional ultrasound imaging can be used to elucidate the mechanical properties of tissues within the body, it is constrained by comparatively lower resolution and inferential, rather than direct measurments of strain and by the small strain normally produced under physiologic pressure in highly nonlinear structures such as arteries. One of our subjects was examined both before and after developing stenosis 3 months post-surgery. The strain values for this individual were found to be significantly lower indicating a stiffer vessel wall at the stenotic region than at a non-stenotic region under both physiologic and equalized pressure. These results suggest the possibility of noninvasive detection of the neointimal hyperplasia preceding anastomotic stenosis.

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Estimation of arterial pulse wave velocity with a new improved tissue Doppler method

Cited by 10 publications

References 15 publications

High‐Resolution Ultrasound Elasticity Imaging to Evaluate Dialysis Fistula Stenosis

High‐Resolution Ultrasound Elasticity Imaging to Evaluate Dialysis Fistula Stenosis

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

High-resolution Ultrasound Speckle Tracking May Detect Vascular Mechanical Wall Changes in Peripheral Artery Bypass Vein Grafts

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