Addition of Reliability Measurement Index to Point Shear Wave Elastography

Prospective Validation via Diagnostic Performance and Reproducibility

Hyo Jin Kang, Jae Young Lee, Kyung Boon Lee, Ijin Joo, Kyungsuk Suh, Hyoung Ki Lee, Joon Koo Han

Research output: Contribution to journalArticleResearchpeer-review

Abstract

The clinical value of the reliability measurement index (RMI), newly added to point shear wave elastography (pSWE), was investigated. Forty-nine patients underwent both pSWE providing RMI (range: 0.0–1.0) and transient elastography (TE) before hepatic surgery. Interclass correlation coefficients (ICCs) between the median of the first two to nine measurements (as categorized by RMI values ≥0.0 (liver stiffness-reliability measurement index [LS-RMI] 0.0), ≥0.4 (LS-RMI 0.4) and ≥0.7 (LS-RMI 0.7) and the median of 10 consecutive measurements (LS-REF) were obtained. Compared with LS-REF, minimums of 7 LS-RMI 0.0, 5 LS-RMI 0.4 and 3 LS-RMI 0.7 measurements were required to obtain an ICC ≥0.95 with high inter-observer agreement (ICC ≥0.90). Diagnostic performance did not differ (p values >0.05) using these reduced numbers of LS measurements. Significant correlations were found between the reduced number of LS measurements and TE or METAVIR (p values <0.001). Therefore, RMI helped to improve reliability and reduce the number of LS measurements while maintaining the diagnostic performance of pSWE.

Original languageEnglish
Pages (from-to)1594-1602
Number of pages9
JournalUltrasound in Medicine and Biology
Volume45
Issue number7
DOIs
StatePublished - 1 Jul 2019

Fingerprint

Elasticity Imaging Techniques
S waves
Liver
liver
stiffness
correlation coefficients
surgery

Keywords

  • Elastography
  • Liver fibrosis
  • Point shear wave elastography
  • Reliability measurement index
  • Ultrasonography

Cite this

@article{9f68ef3ccbae4d7a80ee3f3293e5a683,
title = "Addition of Reliability Measurement Index to Point Shear Wave Elastography: Prospective Validation via Diagnostic Performance and Reproducibility",
abstract = "The clinical value of the reliability measurement index (RMI), newly added to point shear wave elastography (pSWE), was investigated. Forty-nine patients underwent both pSWE providing RMI (range: 0.0–1.0) and transient elastography (TE) before hepatic surgery. Interclass correlation coefficients (ICCs) between the median of the first two to nine measurements (as categorized by RMI values ≥0.0 (liver stiffness-reliability measurement index [LS-RMI] 0.0), ≥0.4 (LS-RMI 0.4) and ≥0.7 (LS-RMI 0.7) and the median of 10 consecutive measurements (LS-REF) were obtained. Compared with LS-REF, minimums of 7 LS-RMI 0.0, 5 LS-RMI 0.4 and 3 LS-RMI 0.7 measurements were required to obtain an ICC ≥0.95 with high inter-observer agreement (ICC ≥0.90). Diagnostic performance did not differ (p values >0.05) using these reduced numbers of LS measurements. Significant correlations were found between the reduced number of LS measurements and TE or METAVIR (p values <0.001). Therefore, RMI helped to improve reliability and reduce the number of LS measurements while maintaining the diagnostic performance of pSWE.",
keywords = "Elastography, Liver fibrosis, Point shear wave elastography, Reliability measurement index, Ultrasonography",
author = "Kang, {Hyo Jin} and Lee, {Jae Young} and Lee, {Kyung Boon} and Ijin Joo and Kyungsuk Suh and Lee, {Hyoung Ki} and Han, {Joon Koo}",
year = "2019",
month = "7",
day = "1",
doi = "10.1016/j.ultrasmedbio.2019.03.007",
language = "English",
volume = "45",
pages = "1594--1602",
journal = "Ultrasound in Medicine and Biology",
issn = "0301-5629",
publisher = "Elsevier USA",
number = "7",

}

Addition of Reliability Measurement Index to Point Shear Wave Elastography : Prospective Validation via Diagnostic Performance and Reproducibility. / Kang, Hyo Jin; Lee, Jae Young; Lee, Kyung Boon; Joo, Ijin; Suh, Kyungsuk; Lee, Hyoung Ki; Han, Joon Koo.

In: Ultrasound in Medicine and Biology, Vol. 45, No. 7, 01.07.2019, p. 1594-1602.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Addition of Reliability Measurement Index to Point Shear Wave Elastography

T2 - Prospective Validation via Diagnostic Performance and Reproducibility

AU - Kang, Hyo Jin

AU - Lee, Jae Young

AU - Lee, Kyung Boon

AU - Joo, Ijin

AU - Suh, Kyungsuk

AU - Lee, Hyoung Ki

AU - Han, Joon Koo

PY - 2019/7/1

Y1 - 2019/7/1

N2 - The clinical value of the reliability measurement index (RMI), newly added to point shear wave elastography (pSWE), was investigated. Forty-nine patients underwent both pSWE providing RMI (range: 0.0–1.0) and transient elastography (TE) before hepatic surgery. Interclass correlation coefficients (ICCs) between the median of the first two to nine measurements (as categorized by RMI values ≥0.0 (liver stiffness-reliability measurement index [LS-RMI] 0.0), ≥0.4 (LS-RMI 0.4) and ≥0.7 (LS-RMI 0.7) and the median of 10 consecutive measurements (LS-REF) were obtained. Compared with LS-REF, minimums of 7 LS-RMI 0.0, 5 LS-RMI 0.4 and 3 LS-RMI 0.7 measurements were required to obtain an ICC ≥0.95 with high inter-observer agreement (ICC ≥0.90). Diagnostic performance did not differ (p values >0.05) using these reduced numbers of LS measurements. Significant correlations were found between the reduced number of LS measurements and TE or METAVIR (p values <0.001). Therefore, RMI helped to improve reliability and reduce the number of LS measurements while maintaining the diagnostic performance of pSWE.

AB - The clinical value of the reliability measurement index (RMI), newly added to point shear wave elastography (pSWE), was investigated. Forty-nine patients underwent both pSWE providing RMI (range: 0.0–1.0) and transient elastography (TE) before hepatic surgery. Interclass correlation coefficients (ICCs) between the median of the first two to nine measurements (as categorized by RMI values ≥0.0 (liver stiffness-reliability measurement index [LS-RMI] 0.0), ≥0.4 (LS-RMI 0.4) and ≥0.7 (LS-RMI 0.7) and the median of 10 consecutive measurements (LS-REF) were obtained. Compared with LS-REF, minimums of 7 LS-RMI 0.0, 5 LS-RMI 0.4 and 3 LS-RMI 0.7 measurements were required to obtain an ICC ≥0.95 with high inter-observer agreement (ICC ≥0.90). Diagnostic performance did not differ (p values >0.05) using these reduced numbers of LS measurements. Significant correlations were found between the reduced number of LS measurements and TE or METAVIR (p values <0.001). Therefore, RMI helped to improve reliability and reduce the number of LS measurements while maintaining the diagnostic performance of pSWE.

KW - Elastography

KW - Liver fibrosis

KW - Point shear wave elastography

KW - Reliability measurement index

KW - Ultrasonography

UR - http://www.scopus.com/inward/record.url?scp=85064673729&partnerID=8YFLogxK

U2 - 10.1016/j.ultrasmedbio.2019.03.007

DO - 10.1016/j.ultrasmedbio.2019.03.007

M3 - Article

VL - 45

SP - 1594

EP - 1602

JO - Ultrasound in Medicine and Biology

JF - Ultrasound in Medicine and Biology

SN - 0301-5629

IS - 7

ER -