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Shear wave velocity measurements using acoustic radiation force impulse in young children with normal kidneys versus hydronephrotic kidneys

Authors
 Beomseok Sohn  ;  Myung-Joon Kim  ;  Sang Won Han  ;  Young Jae Im  ;  Mi-Jung Lee 
Citation
 Ultrasonography, Vol.33(2) : 116-121, 2014 
Journal Title
 Ultrasonography 
ISSN
 2288-5919 
Issue Date
2014
Abstract
PURPOSE: To measure shear wave velocities (SWVs) by acoustic radiation force impulse (ARFI) ultrasound elastography in normal kidneys and in hydronephrotic kidneys in young children and to compare SWVs between the hydronephrosis grades. METHODS: This study was approved by an institutional review board, and informed consent was obtained from the parents of all the children included. Children under the age of 24 months were prospectively enrolled. Hydronephrosis grade was evaluated on ultrasonography, and three valid ARFI measurements were attempted using a high-frequency transducer for both kidneys. Hydronephrosis was graded from 0 to 4, and high-grade hydronephrosis was defined as grades 3 and 4. RESULTS: Fifty-one children underwent ARFI measurements, and three valid measurements for both kidneys were obtained in 96% (49/51) of the patients. Nineteen children (38.8%) had no hydronephrosis. Twenty-three children (46.9%) had unilateral hydronephrosis, and seven children (14.3%) had bilateral hydronephrosis. Seven children had ureteropelvic junction obstruction (UPJO). Median SWVs in kidneys with high-grade hydronephrosis (2.02 m/sec) were higher than those in normal kidneys (1.75 m/sec; P=0.027). However, the presence of UPJO did not influence the median SWVs in hydronephrotic kidneys (P=0.362). CONCLUSION: Obtaining ARFI measurements of the kidney is feasible in young children with median SWVs of 1.75 m/sec in normal kidneys. Median SWVs increased in high-grade hydronephrotic kidneys but were not different between hydronephrotic kidneys with and without UPJO.
Files in This Item:
T201400680.pdf Download
DOI
10.14366/usg.14002
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Urology (비뇨의학교실) > 1. Journal Papers
Yonsei Authors
Kim, Myung Joon(김명준) ORCID logo https://orcid.org/0000-0002-4608-0275
Sohn, Beomseok(손범석) ORCID logo https://orcid.org/0000-0002-6765-8056
Lee, Mi-Jung(이미정) ORCID logo https://orcid.org/0000-0003-3244-9171
Im, Young Jae(임영재)
Han, Sang Won(한상원) ORCID logo https://orcid.org/0000-0003-0941-1300
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URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/98332
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