Elastography in the evaluation of thyroid nodules in children - expanding the field of ultrasound to reduce the need for invasive procedures

Rocha, Semíramis Melani Melo

doi:10.1590/0100-3984.2019.52.3e1

Cited by 1 publication

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References 3 publications

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“…However, structural evaluation of the renal parenchyma continues to be a challenge (10) . Ultrasound elastography has emerged as a tool to assist in the assessment of tissue stiffness, is already in use at major centers around the world, and has been the subject of a series of recent studies in the radiology literature of Brazil( 11 , 12 , 13 , 14 , 15 ). Shear wave elastography (SWE) is the most effective noninvasive technique for assessing renal fibrosis after transplantation (16) and assessing tissue velocity in response to a low-frequency pulse, a low velocity being indicative of tissue stiffness (17) .…”

Section: Introductionmentioning

confidence: 99%

Shear wave elastography and Doppler ultrasound in kidney transplant recipients

et al. 2022

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Objective: To evaluate the association between shear wave elastography parameters and arterial resistance in kidney transplant recipients. Materials and Methods: This was a prospective cross-sectional study involving consecutive adult kidney transplant recipients. All patients underwent color Doppler to evaluate the resistive index (RI) and ultrasound shear wave elastography for the quantification of renal allograft stiffness. Results: We evaluated 55 patients, of whom 9 (16.4%) had an RI defined as abnormal (≥ 0.79) and 46 (83.6%) had an RI defined as normal (< 0.79). The mean age was higher in the abnormal RI group than in the normal RI group (68.0 ± 8.6 years vs. 42.6 ± 14.1 years; p < 0.001), as was the mean shear wave velocity (2.6 ± 0.4 m/s vs. 2.2 ± 0.4 m/s; p = 0.013). Multivariate analysis identified two independent predictors of arterial resistance: age (OR = 1.169; 95% CI: 1.056 to 1.294; p = 0.003) and shear wave velocity (OR = 17.1; 95% CI: 1.137 to 257.83; p = 0.040). Conclusion: We observed an association between rigidity in the cortex of the transplanted kidney, as evaluated by shear wave elastography, and arterial resistance, as evaluated by color Doppler, in kidney transplant recipients.

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