Siemens Software version syngo CT 2005C manual Syngo Dynamic Evaluation

syngo Dynamic Evaluation

Dynamic evaluation is a function which allows you to analyze the absolute or relative enhancement of Houn- sfield values within a Region of Interest.

The enhancement value is computed from a stack of CT images which are obtained at different points in time after contrast agent injection. For dynamic evalu- ation, usually images from the same cross-section of the body are taken, such as a Multi-scan through an unclear process in the liver.

The time to the maximum enhancement (Time-to- Peak) and the way a certain tissue or structure absorbs the contrast medium can be very helpful in differential diagnosis of a given process.

To do this, the Dynamic Evaluation card provides you with the following methods:

•Evaluation on a separate syngo card on the user interface.

•Selection dialog for slice positions to be evaluated in Multi-slice studies.

•Volume data sets can be evaluated also, e.g., for measurement of contrast enhancement in a vessel during spiral acquisition and further optimization of contrast injection procedure for follow-up studies.

•Dynamic evaluation of 5 different regions (circular and irregular) and a pixel lens are possible in parallel.

•ROI definition and pixel lens are automatically cop- ied to all pending images of the stack and show an immediate display of the time-density curves, i.e. a calculation can be done with only one interaction.

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