Acoustic radiation force impulse (push pulse)-induced lung hemorrhage: investigating the effect of ultrasound contrast agent in rabbits

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izdano v:Journal of Medical Ultrasonics vol. 52, no. 1 (Jan 2025), p. 17
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Springer Nature B.V.
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024 7 |a 10.1007/s10396-024-01510-3  |2 doi 
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245 1 |a Acoustic radiation force impulse (push pulse)-induced lung hemorrhage: investigating the effect of ultrasound contrast agent in rabbits 
260 |b Springer Nature B.V.  |c Jan 2025 
513 |a Journal Article 
520 3 |a PurposeAcoustic radiation force impulse (ARFI) elastography and contrast-enhanced ultrasonography (CEUS) are emerging techniques that are becoming common in ultrasound examinations. We previously reported that ARFI (push pulse) induced lung hemorrhage in rabbits, indicating that greater risks are associated with ARFI than with conventional ultrasound. In this study, we assessed the risk of lung hemorrhage under a combination of ARFI elastography and CEUS, considering potential exacerbation of ARFI-induced lung hemorrhage as a result of the ultrasound contrast agent (UCA) used in CEUS.MethodsTwenty-three rabbits were divided into non-UCA and UCA groups. ARFI exposure parameters were set at six mechanical index (MI) levels (0.29, 0.45, 0.60, 0.88, 1.0, 1.39) in non-UCA groups and five MI levels (0.29, 0.66, 0.88, 0.97, 1.25) in UCA groups. Lung exposure was performed bilaterally through the intercostal space in each rabbit. Lung damage was assessed through macroscopic and microscopic observation post euthanasia.ResultsLung hemorrhage was detected at MI0.3 levels of 0.88 or higher. Logistic regression analyses showed that MI0.3 was a statistically significant factor for occurrence of lung hemorrhage in both non-UCA and UCA groups, and the MI0.3 threshold (ED05) for inducing lung hemorrhage was 0.68 and 0.71, respectively. However, multivariate logistic regression and linear regression analyses across all samples indicated that UCA did not significantly affect the occurrence or area of lung hemorrhage.ConclusionThis study demonstrates that UCA does not significantly worsen ARFI-induced lung hemorrhage in terms of occurrence or severity. However, risks and benefits of ARFI elastography on the lung should be considered, irrespective of UCA administration. 
651 4 |a Japan 
653 |a Hemorrhage 
653 |a Lungs 
653 |a Rabbits 
653 |a Contrast agents 
653 |a Liver 
653 |a Experiments 
653 |a Damage detection 
653 |a Pressure distribution 
653 |a Damage assessment 
653 |a Regression analysis 
653 |a Heart 
653 |a Acoustics 
653 |a Respiration 
653 |a Ultrasonic imaging 
653 |a Radiation 
653 |a Sound waves 
773 0 |t Journal of Medical Ultrasonics  |g vol. 52, no. 1 (Jan 2025), p. 17 
786 0 |d ProQuest  |t Health & Medical Collection 
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856 4 0 |3 Full Text  |u https://www.proquest.com/docview/3163603894/fulltext/embedded/6A8EOT78XXH2IG52?source=fedsrch 
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