![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiJnfFtNiiGDLnAxra88XWWmhBTbSXqaqSx9j52xH4GaPbjRozaWms8hKN_EZnQyn-wJJASbR_cDIEi_CqPk1HZjWkxmflCGXXIZqagcq9qYXE59npHJKyGTWWPo2Csh7BaUvsmp0ZhOsHZ/s400/PVT.jpg)
In this image we see an enlarged hepatic artery (red) anterior to a thrombosed portal vein.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEir-btwhaGUjl9Lv4qgpt1o_xNpSlmsbb3TBCp06KoOT95ib5Np8yq4Mx8jUgUD7Q_8d54SvEfSsxqbWK1g4bfU24gSOhlF02i-dNSyq0Z0D0LGPPuhyUxkz6hO16GXWqVMhDTUKg5pPMsi/s400/HA.jpg)
It has also been shown that HA resistance decreases with acute portal vein thrombosis. Control subjects in one study had mean HA resistive indices (HARI) of 0.75 +/- 0.08, while those with PVT had HARIs of 0.57 +/- 0.11. The reduction in HARI may not be as apparent with more chronic PVT.
References
- Platt et al. Hepatic artery resistance changes in portal vein thrombosis. Radiology 1995; 196 (1): 95-98.
- Rokni-Yazdi H and Sotoudeh H. Assessment of Normal Doppler Parameters of Portal Vein and Hepatic Artery in 37 Healthy Iranian Volunteers. Iran J Radiol, 2006; 3(4): 213-216
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