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Optimal Acquisition Number for Hepatic Shear Wave Velocity Measurements in Children

Authors
 Hyun Joo Shin  ;  Myung-Joon Kim  ;  Ha Yan Kim  ;  Yun Ho Roh  ;  Mi-Jung Lee 
Citation
 PLoS One, Vol.11(12) : e0168758, 2016 
Journal Title
 PLoS One 
Issue Date
2016
MeSH
Adolescent ; Child ; Child, Preschool ; Elasticity Imaging Techniques* ; Female ; Humans ; Infant ; Infant, Newborn ; Liver/diagnostic imaging ; Liver/physiology* ; Male ; Prospective Studies ; Respiratory Rate/physiology
Abstract
OBJECTIVE: To investigate the minimum optimal acquisition number of hepatic shear wave velocities (SWVs) on ultrasound elastography in children. MATERIALS AND METHODS: We prospectively performed hepatic supersonic shear wave elastography in children of four groups (group A-C, healthy children, group A with 0-5 years old; group B with 6-10 years old; group C with 11-18 years old; and group D, children with previous Kasai operation) with free breathing (FB) and breath holding (BH) status, if possible. SWVs were measured fifteen times for each child at a 4 cm depth for the right lobe using a 1-6 MHz convex transducer. Mean SWVs from three, five, and seven acquisitions were compared to the mean SWV from fifteen measurements, using an intraclass correlation coefficient (ICC) analyzed with the 1,000 times bootstrap method. RESULTS: Total eighty-eight children were included (25 children in group A, 30 children in group B, 21 children in group C, and 12 children in group D). The mean SWVs from fifteen measurements in FB status were 5.5 ± 1.3 kPa for groups A-C together and 8.0 ± 2.2 kPa for group D. For all groups together, mean SWVs from the three (ICC 0.944 and 0.937), five (ICC 0.958 and 0.938) and seven (ICC 0.969 and 0.941) acquisitions demonstrated almost perfect agreement with the reference of fifteen acquisitions in both FB and BH status, respectively. A subgroup analysis showed three measurements were in almost perfect agreement during FB for groups B-D and strong agreement (ICC 0.675) for group A. CONCLUSION: Three acquisitions can be enough for hepatic SWVs in children more than 6 years old regardless of breathing status or hepatic pathology. More acquisitions are recommended for children under the age of 5 years during FB.
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DOI
10.1371/journal.pone.0168758
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Yonsei Biomedical Research Center (연세의생명연구원) > 1. Journal Papers
Yonsei Authors
김명준(Kim, Myung Joon) ORCID logo https://orcid.org/0000-0002-4608-0275
김하얀(Kim, Ha Yan)
신현주(Shin, Hyun Joo) ORCID logo https://orcid.org/0000-0002-7462-2609
이미정(Lee, Mi-Jung) ORCID logo https://orcid.org/0000-0003-3244-9171
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URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/152799
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