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Reference.org
Perfusion CT
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<p>Perfusion CT or CT Perfusion is a type of <a href="/facts/Perfusion_scanning/SvvkLuV4">perfusion scanning</a> using <a href="/facts/CT_scan/NusPJ2S8">computed tomography</a>. It is helpful in the evaluation of the <a href="/facts/Vascularity/wMqktGE1">vascularity</a> of tissue in the body. In this, the temporal changes in tissue density are measured, providing information about the vascularity of the tissue. In CT perfusion, a contrast media injection is given, and then the scan is taken. The acquired data are post-processed to obtain perfusion maps with different parameters, such as BV (blood volume), BF (blood flow), MTT (mean transit time), and TTP (time to peak). </p>