Paverd, Catherine; Kupfer, Sivert; Kirchner, Iara Nascimento; Nambiar, Sherin; Martin, Alexander; Korta Martiartu, Naiara; Frauenfelder, Thomas; Rominger, Marga B; Ruby, Lisa (2023). Impact of Breathing Phase, Liver Segment, and Prandial State on Ultrasound Shear Wave Speed, Shear Wave Dispersion, and Attenuation Imaging of the Liver in Healthy Volunteers. Diagnostics, 13(5) MDPI 10.3390/diagnostics13050989
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OBJECTIVES
Measurement location and patient state can impact noninvasive liver assessment and change clinical staging in ultrasound examinations. Research into differences exists for Shear Wave Speed (SWS) and Attenuation Imaging (ATI), but not for Shear Wave Dispersion (SWD). The aim of this study is to assess the effect of breathing phase, liver lobe, and prandial state on SWS, SWD, and ATI ultrasound measurements.
METHODS
Two experienced examiners performed SWS, SWD, and ATI measurements in 20 healthy volunteers using a Canon Aplio i800 system. Measurements were taken in the recommended condition (right lobe, following expiration, fasting state), as well as (a) following inspiration, (b) in the left lobe, and (c) in a nonfasting state.
RESULTS
SWS and SWD measurements were strongly correlated (r = 0.805, p < 0.001). Mean SWS was 1.34 ± 0.13 m/s in the recommended measurement position and did not change significantly under any condition. Mean SWD was 10.81 ± 2.05 m/s/kHz in the standard condition and significantly increased to 12.18 ± 1.41 m/s/kHz in the left lobe. Individual SWD measurements in the left lobe also had the highest average coefficient of variation (19.68%). No significant differences were found for ATI.
CONCLUSION
Breathing and prandial state did not significantly affect SWS, SWD, and ATI values. SWS and SWD measurements were strongly correlated. SWD measurements in the left lobe showed a higher individual measurement variability. Interobserver agreement was moderate to good.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
08 Faculty of Science > Institute of Applied Physics |
UniBE Contributor: |
Korta Martiartu, Naiara |
Subjects: |
600 Technology > 620 Engineering |
ISSN: |
2075-4418 |
Publisher: |
MDPI |
Language: |
English |
Submitter: |
Pubmed Import |
Date Deposited: |
13 Mar 2023 13:44 |
Last Modified: |
14 Mar 2023 02:19 |
Publisher DOI: |
10.3390/diagnostics13050989 |
PubMed ID: |
36900133 |
Uncontrolled Keywords: |
attenuation imaging shear wave dispersion shear wave elastography shear wave speed ultrasound liver assessment |
BORIS DOI: |
10.48350/179923 |
URI: |
https://boris.unibe.ch/id/eprint/179923 |
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