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KMID : 1151820190130010021
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Journal of the Korean Society of Radiology
2019 Volume.13 No. 1 p.21 ~ p.29
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Comparative Study on Signal Strength of Mechanical Index Using Ultrasound Machines with SonoVue Contrast
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Kim Myung-Seok
Kim Sang-Hyun
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Abstract
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The purpose of this study was to compare the MI using SonoVue along with different machines output and to infer the meaning of the signal difference under the same condition. All of the comparative instruments showed strong signal values at early stage as MI value increased. Over time, the inter-instrumental signal values showed signal attenuation under all conditions except for 10 min of the condition of MI 0.1 of RS85A. E9 and EPIQ7 showed signal degradation due to microbubble collapse over time at all MI values. In the comparison of equipment, the signal strengths of MI 0.1, 0.2, and 0.4 were high in order of EPIQ7, RS85A and E9. In the quantitative analysis, there were statistically significant from the SNR and CNR that were obtained from RS85A and E9 (P-value<0.05). In the quantitative analysis, Epiq7 was statistically significant except for CNR as the MI value was changed In the contrast-enhanced ultrasound, even though MI value was low (MI <0.05), it will be helpful for diagnosis, controlling the MI and scan time because a difference in signal intensity was shown between the three machines.
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KEYWORD
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Contrast Enhanced Ultrasonography, SonoVue, micro bubble, SNR, MI
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