Diagnosis of Hepatocellular Carcinoma: Multidetector-Row Computed Tomography and Magnetic Resonance Imaging
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Diagnostic imaging plays an important role in the diagnosis of early-stage hepato-cellular carcinoma (HCC); with contrast-enhanced computed tomography (CT) and magnetic resonance (MR) imaging examination being especially important for the precise and objective evaluation of HCC. At present, both imaging techniques are widely used for diagnosis of HCC. For the CT examination, a contrast-enhanced dynamic study consisting of an arterial phase and a portal venous phase is useful for detecting HCC, while multidetector-row helical CT (MDCT) scanner offers major advantages for the evaluation of HCC due to its faster acquisition capability and higher spatial resolution.
For contrast-enhanced MR imaging, a dynamic study using gadolinium-based contrast material is also useful for evaluating HCC. In addition, a tissue-specific contrast material such as super-paramagnetic iron oxide (SPIO), which is available only for MR imaging is a valuable aid for the diagnosis of HCC. This chapter presents an overview of current multidetector-row helical computed tomography (MDCT) technique including the underlying principles of contrast injection and MR techniques, including recent advanced technology for the diagnosis of HCC.
KeywordsArterial Phase Portal Venous Phase Early Arterial Phase Hypervascular Hepatocellular Carcinoma Double Arterial Phase
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