Tissue elasticity estimated by acoustic radiation force impulse quantification depends on the applied transducer force: an experimental study in kidney transplant patients

Syversveen, Trygve; Midtvedt, Karsten; Berstad, A; Brabrand, Knut; Strøm, Erik H.; Abildgaard, Andreas

doi:10.1007/s00330-012-2476-4

Cited by 106 publications

(86 citation statements)

References 13 publications

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“…In ARFI, the power of the force applied on the transducer by the operator [18,41,42], the distance from source to target [21,27,34,42] -in current imaging methods is important as is the maximal depth is 8 cm [8], and also the frequency of the probe [42,43], all of these being potential modifiers of measured shear wave velocity. Furthermore, placement of the probe on the cortex may be difficult in advanced CKD because of a small cortical parenchyma thickness.…”

Section: Evaluating Fibrosis In Native Kidney With Us Elastographymentioning

confidence: 99%

Value of ultrasound elastography in the diagnosis of native kidney fibrosis.

et al. 2016

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In the last decade ultrasound elastography, an already widely used technique in the diagnosis of hepatic fibrosis, has raised the attention of nephrologists as a potential valuable noninvasive tool for the diagnosis of renal fibrosis. Due to renal deep location and anatomic complexity, the shear wave techniques are the most appropriate elastography methods for exploring native kidneys. Recent research offers promising results, but further larger studies are required for a better standardization of this method and also for establishing reference values of normal kidney elasticity. This article reviews the studies conducted for exploring the native kidney, highlighting the advantages and limitations of ultrasound elastography for assessing fibrosis development in chronic kidney diseases.

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Section: Evaluating Fibrosis In Native Kidney With Us Elastographymentioning

confidence: 99%

Value of ultrasound elastography in the diagnosis of native kidney fibrosis.

et al. 2016

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“…In addition, Bruno et al [4] emphasised the importance of constant compression exerted on the transducer when making shear wave velocity measurements. This followed from the findings of Syversveen et al [5], who reported that acoustic radiation force impulse elasticity estimates may, in general, vary with applied transducer force. This technique detail also was not mentioned by Goya et al [1].…”

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confidence: 78%

Acoustic radiation force impulse elastography for evaluating renal parenchymal stiffness in children

et al. 2014

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“…The second limitation is based on operator-dependent factors, such as applied transducer pressure. Syversveen et aldemonstrated that the applied transducer force effects pSWE results in kidney transplants [38]. Since no technique exists for controlling the applied handhold transducer force, we tried to minimize the transducer pressure on the tissue.…”

Section: Discussionmentioning

confidence: 99%

Point shear wave elastography (pSWE) using Acoustic Radiation Force Impulse (ARFI) imaging: a feasibility study and norm values for renal parenchymal stiffness in healthy children and adolescents

et al. 2017

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Aims: To evaluate the applicability of point shear wave elastography (pSWE) for measuring renal parenchymal stiffness in healthy children and adolescents and to establish norm values for shear wave speed (SWS) using two ARFI methods and ultrasound probes.Material and methods: We prospectively investigated 264 children (43.9% males). pSWE (Virtual TouchTM Quantification and Virtual TouchTM Imaging Quantification (VTQ and VTIQ; Siemens, Germany)) was performed in the renal cortex of 528 healthy kidneys using a 1-6 MHz convex and a 4-9 MHz linear ultrasound probe in ventrolateral and dorsal examinations. Feasibility and reproducibility of pSWE measurements were evaluated. SWS values were analysed with regard to age, body dimensions, kidney volume and measuring depth.Results: pSWE measurements were successful in >95% of subjects using the low and in <60% using the high-frequency probe. Mean SWS values (m/s) differed by method and probe: 2.10±0.43 (VTQ1-6MHz, convex, ventrolateral), 2.30±0.37 (VTQ1-6MHz, convex, dorsal), 1.58±0.44 (VTQ4-9MHz, linear, dorsal) and 1.96±0.27 (VTIQ4-9MHz, linear, dorsal). SWS was positively correlated with age, weight and body height, but independent of sex, BMI, or kidney volume and depth.Conclusions: pSWE (VTQ) is a feasible method to evaluate renal parenchymal stiffness in children of all ages. SWS values are age and weight dependent and differ significantly between high- and low-frequency probes. High-frequency probes and VTIQ should only be used in children <10 years.

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Tissue elasticity estimated by acoustic radiation force impulse quantification depends on the applied transducer force: an experimental study in kidney transplant patients

Cited by 106 publications

References 13 publications

Value of ultrasound elastography in the diagnosis of native kidney fibrosis.

Value of ultrasound elastography in the diagnosis of native kidney fibrosis.

Acoustic radiation force impulse elastography for evaluating renal parenchymal stiffness in children

Point shear wave elastography (pSWE) using Acoustic Radiation Force Impulse (ARFI) imaging: a feasibility study and norm values for renal parenchymal stiffness in healthy children and adolescents

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