Renal elastography measurements in children with acute glomerulonephritis
Burak Yoǧurtçuoǧlu , Çaǧrı Damar
Department of Radiology, Faculty of Medicine, Gaziantep University, Üniversite Bulvarı, Șehitkamil, Turkey
Corresponding Author: Çaǧrı Damar ,Tel: +90-5056721375, Fax: +90-3423605746, Email: cagridamar@hotmail.com
Received: November 4, 2020;  Accepted: March 4, 2021.  Published online: March 4, 2021.
ABSTRACT
Purpose:
The aim of this study was to compare the acoustic radiation force impulse elastography (ARFI-e) values of the renal cortical parenchyma in children with acute glomerulonephritis (AGN) and healthy children, and to determine a cut-off point for the diagnosis of AGN.
Methods:
This prospective study included 30 children with biopsy-proven AGN and 30 healthy children. All the children underwent renal ARFI-e measurements. Values were obtained from the upper, middle, and lower zones of the right kidney parenchyma. A total of nine ARFI-e measurements (three from each zone) were made. Statistical analyses were conducted of the mean elastography values (MEVs) of the children in both groups.
Results:
In the patient group, the MEVs measured from the upper, middle and lower zones of the right kidney were 3.42±0.42 m/s, 3.45±0.45 m/s, and 3.39±0.39 m/s (average, 3.42±0.34 m/s), respectively. In the healthy control group, the MEVs measured from the upper, middle, and lower zones of the right kidney were 2.85±0.63 m/s, 2.85±0.68 m/s, and 2.86±0.66 m/s (average, 2.85±0.57 m/s), respectively. The MEVs in all zones were significantly higher in the patient group than in the healthy group (P<0.001). The cut-off values determined to predict AGN in the upper, middle, and lower zones of the kidney were 2.74 m/s (sensitivity, 96.67%; specificity, 46.67%), 2.71 m/s (sensitivity, 96.67%; specificity, 53.33%), and 2.81 m/s (sensitivity, 93.33%; specificity, 56.67%), respectively.
Conclusion:
The ARFI-e technique can be considered as a non-invasive, easily applicable, auxiliary method for the early diagnosis of AGN.
Keywords: Acute glomerulonephritis; Biopsy; Prediction; Shear wave elastography; Ultrasound
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