<unk>  showing concentration of tracer within a tissue regions of interest (region of interest) over<unk> . In medical imaging, a<unk>  is a<unk>  of radioactivity (in terms of concentration) plotted on the y-axis against the<unk>  plotted on the x-axis. It shows the concentration of a radiotracer within a region of interest in an image, measured over<unk>  from a dynamic scan. Generally, when a<unk>  is obtained within a tissue, it is called as a tissue<unk> , which represents the concentration of tracer within a region of interest inside a tissue over<unk> . Modern kinetic analysis is performed in various medical imaging techniques, which requires a tissue<unk>  as one of the inputs to the mathematical model, for example, in dynamic positron emission tomography (PET) imaging, or perfusion CT, or dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) using a dynamic scan. A dynamic scan is a scan where two dimensional (2D) or three dimensional (3D) images are acquired again and again over a<unk> -period forming a<unk> -series of 2D/3D image datasets. For example, a dynamic contrast-enhanced magnetic resonance imaging scan acquired over ten minutes contains short image frames acquired for 30 seconds duration to capture the fast dynamics of gadolinium tracer. Each data-point in the<unk>  represents a measurement of tracer-concentration from the region segmented on each of these image<unk> -frame acquired over<unk> .
Time-activity curve
Extraction ratio
Frequency following response
Rape statistics
Basic reproduction number
Kick chart
Fractional kill
Minor test