Abstract: o review the principles, techniques and applications of CT perfusion imaging in diagnosis for liver diseases. As a supplement of conventional CT, CT perfusion imaging can reveal the perfusion informations of tissue or organs, such as hemodynamics, microcirculation status. It is helpful not only in finding morphologic changes, but also in providing functional and metabolizable information about the circulation parameters of hepatic diseases. So, it is valid for studying liver disorders by providing functional information, especial for the differential diagnosis and assessment for therapeutic response.

Key words: Tomography, Tomography, Xray computed, Xray computed, Perfusion, Perfusion, Liver, Liver, Hemodynamics , Hemodynamics