Advanced CT and MR imaging for improving diagnosis and treatment quality

摘要

Fast imaging techniques of CT and MRI can provide high temporal and spatial resolution images which can improve the detection, characterization and staging of disease. They also enable us to perform not only 3D imaging that reveals morphologic 3D information of organ but also 4D imaging that shows organ movement and flow direction. We can have functional imaging of brain and liver, etc. by using sequential scanning after an injection of extra cellular (such as perfusion CT) or tissue specific contrast medium (Gd-EOB-DTPA). These are very helpful for pretreatment planning and treatment effect evaluation. Dual energy CT (DECT) imaging has the ability to make not only material density images but also monochromatic images. Optimal KeV monochromatic CT image can improve lesion contrast. DECT with multiple material decomposition (MMD) technique now can estimate amount of fat deposition and fibrosis quantitatively. Multimodality fusion imaging using the complementary imaging examinations, such as US, MDCT and MRI, is very useful for pretreatment planning, adequate treatment and precise evaluation of treatment effect. I would like to introduce recent progress multimodality and multidimensional imaging for improving diagnosis and treatment quality.