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Doppler Sonography of Hepatic Arterial Blood Flow Velocity After Percutaneous Transhepatic Portal Vein Embolization

Yasushi Kito1, Masato Nagino and Yuji Nimura

1 All authors: First Department of Surgey, Nagoya University School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan.



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  		Fig. 1. —Line graph shows changes in arterial blood flow velocity after portal vein embolization. Values are expressed as mean with standard error (vertical bars). {circ} = common hepatic artery, [UNK] = right hepatic artery, {triangleup} = left hepatic artery, * = p < 0.05, ** = p < 0.01, {dagger} = p < 0.0001 versus value before embolization (by Wilcoxon's signed rank test).

 


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  		Fig. 2. —Line graph shows changes in arterial resistive index after portal vein embolization. Values are expressed as mean with standard error (vertical bars). {circ} = common hepatic artery, [UNK] = right hepatic artery, {triangleup} = left hepatic artery, * = p < 0.05, ** = p < 0.01, {dagger} = p < 0.0001 versus value before embolization (by Wilcoxon's signed rank test).

 


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  		Fig. 3. —Scatterplot shows correlation between increases in flow velocity in right and common hepatic arteries. Increase in flow velocity was defined as velocity on day 1 after embolization divided by velocity before embolization. y = 0.708 + 1.006x (r = 0.514, p < 0.05).

 


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  		Fig. 4. —Scatterplot shows correlation between atrophy rate of right hepatic lobe and increase in flow velocity in right hepatic artery. Increase in flow velocity was defined as velocity on day 1 after embolization divided by velocity before embolization. y = 0.157 + 3.761x (r = 0.700, p < 0.0005).

 

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