Kazuto Kozaka MD, Presenter: Nothing to Disclose

Osamu Matsui MD, Abstract Co-Author: Research Consultant, Kowa Company, Ltd Research Consultant, Otsuka Holdings Co, Ltd Research Consultant, Eisai Co, Ltd Speakers Bureau, Bayer AG Speakers Bureau, Eisai Co, Ltd

Satoshi Kobayashi MD, Abstract Co-Author: Nothing to Disclose

Junichiro Sanada, Abstract Co-Author: Nothing to Disclose

Wataru Koda, Abstract Co-Author: Nothing to Disclose

Tetsuya Minami MD, Abstract Co-Author: Nothing to Disclose

Azusa Kitao, Abstract Co-Author: Nothing to Disclose

Dai Inoue, Abstract Co-Author: Nothing to Disclose

Norihide Yoneda, Abstract Co-Author: Nothing to Disclose

Kotaro Yoshida MD, Abstract Co-Author: Nothing to Disclose

Kazuhiko Ueda MD, Abstract Co-Author: Nothing to Disclose

Toshifumi Gabata MD, Abstract Co-Author: Nothing to Disclose

Understanding the features of peritumoral enhancement with underlying hemodynamic and pathologic changes in dynamic contrast enhanced imaging is essential for differential diagnosis and for realizing pathophysiology of hepatic tumor or tumorous lesions. 

Outlines 1. Blood flow imaging techniques  i. Dynamic CT/MRI, Contrast enhanced US  ii. Angiography, Angiography assisted CT [CT during hepatic portoarteriography (CTAP), CT during hepatic arteriography (CTHA) and single level dynamic CTHA (SLD-CTHA)] 2. The classification of peritumoral hemodynamics based on angiography assisted CT  i. Delayed ring/corona shaped peritumoral enhancement after the tumor enhancement  ii. Early wedge or fan shaped peritumoral enhancement  iii. Early ring shaped peritumoral enhancement  iv. No or minimal peritumoral enhancement in a hypervascular tumor 3. The classification of tumor/surrounding hepatic parenchyma interface pathology  i. Fibrous encapsulation pattern  ii. Compressive pattern  iii. Replacing infiltration pattern  iv. Others 4. Correlation between peritumoral hemodynamics and interface pathology 5. Representative case review with special reference to conventional blood flow imaging

http://abstract.rsna.org/uploads/2014/14005612/14005612_shqu.pdf

Kozaka, K, Matsui, O, Kobayashi, S, Sanada, J, Koda, W, Minami, T, Kitao, A, Inoue, D, Yoneda, N, Yoshida, K, Ueda, K, Gabata, T, Peritumoral Enhancement of Hepatic Tumors and Tumorous Lesions: Analysis Based on the Hemodynamics Evaluated by Angiography-assisted CT and Histopathology.  Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL. http://archive.rsna.org/2014/14005612.html