He Qing Wang MSc, Presenter: Nothing to Disclose

Ailian Liu MD, Abstract Co-Author: Nothing to Disclose

Yijun Liu, Abstract Co-Author: Nothing to Disclose

Haruhiko Machida MD, Abstract Co-Author: Nothing to Disclose

Eiko Ueno MD, Abstract Co-Author: Nothing to Disclose

To review current CT in CT portal venography (CTPV) and its limitations   The standard contrast medium injection of the multiphase contrast-enhanced in liver can be used for CTPV with spectral CT   To demonstrate the improved image quality using late arterial phase as compared with that obtained using portal venous phase by presenting clinical images  

1) Standard CT in CTPV and its limitations low contrast between the portal vein and liver parenchyma results in poor depiction of the intrahepatic portal   veins on CTPV images CTPV images can be easily affected by various factors limited effect on the portal veins to increase the contrast medium dose and/or injection rate 2) Normal multiphase contrast enhancement in liver can be used for CTPV with spectral CT Optimal energy level of CTPV images in late arterial phase by presenting clinical images Optimal energy level of CTPV images in portal venous phase by presenting clinical images 3) CTPV images using late arterial phase is better than that obtained using portal venous phase high contrast between the portal vein and liver parenchyma in late arterial phase no hepatic veins overlapped the portal veins  

http://abstract.rsna.org/uploads/2014/14013843/14013843_xq57.pdf

Wang, H, Liu, A, Liu, Y, Machida, H, Ueno, E, CT Spectral Imaging in CT Portal Venography: Which Phase is Better, Late Arterial Phase or Portal Venous Phase.  Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL. http://archive.rsna.org/2014/14013843.html