Interobserver Variability of Ultrasound Elastography in Transplant Kidneys: Correlations With Clinical-Doppler Parameters
| Autor: | Mehmet Fatih Inci, Yasemin Coşkun Yavuz, Hayriye Sayarlioglu, Bülent Altunoluk, Nuri Özcan, Ekrem Dogan, Murvet Yuksel, Fuat Ozkan |
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| Rok vydání: | 2013 |
| Předmět: |
Adult
Male medicine.medical_specialty Acoustics and Ultrasonics Intraclass correlation Biophysics Renal function Sonoelastography Kidney Correlation symbols.namesake Ultrasound elastography Humans Medicine Radiology Nuclear Medicine and imaging Observer Variation Radiological and Ultrasound Technology business.industry Ultrasound Ultrasonography Doppler Kidney Transplantation Elasticity medicine.anatomical_structure symbols Elasticity Imaging Techniques Female Radiology business Nuclear medicine Doppler effect Glomerular Filtration Rate |
| Zdroj: | Ultrasound in Medicine & Biology. 39:4-9 |
| ISSN: | 0301-5629 |
| DOI: | 10.1016/j.ultrasmedbio.2012.09.013 |
| Popis: | Real-time sonoelastography (RSE) is a relatively new imaging technique that visualizes relative difference in tissue hardness by evaluating changes in local strain in response to external stress. Our aim was to evaluate the ability of investigators to use sonoelastography to detect differences in renal cortical stiffness and assess the relationship between stiffness and clinical-Doppler parameters. In 42 adult renal transplant recipients, sonoelastography of kidney was performed to calculate the strain ratio (SR) of the central echo complex to the renal parenchyma. Resistive index (RI) and pulsatility index (PI) were also measured. Estimated glomerular filtration rate (eGFR) was calculated. Parenchymal stiffness showed significant positive correlation with RI and PI (r: 0.41 p = 0.007 and r: 0.48 p = 0.001, respectively). Parenchymal stiffness and eGFR did not have a significant correlation ( p = 0.42). Interobserver agreement, expressed as intraclass correlation coeffiicient was 0.47 (95% CI: 0.05–0.70). Parenchymal stiffness (SR) showed significant positive correlation with RI and PI but sonoelastography has also wide range intra- and low interobserver agreement in renal transplants. Further studies are warranted in larger patient groups to determine the reliability of sonoelastography in renal transplants. |
| Databáze: | OpenAIRE |
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