Siemens syngo CT 2005C - Manual (Page 319)

syngo Dynamic Evaluation
319
• Relative Enhancement Curve
Time Axis (X)
The point of time for an image is computed relative to
the point of time at which the first input image was
acquired:
Point of Time = Acquisition Time – Acquisition Time of
the First Image + Delay
• Enhancement Axis (Y)
The mean CT value of each ROI is plotted on the
enhancement axis of the enhancement curve.
The value is relative to the CT values of the baseline
image. The mean CT value of an ROI inside the baseline
image is assumed to be “0“.
• Absolute Enhancement Curve
Enhancement Axis (Y)
The point of time for an image is computed relative to
the point of time at which the first input image was
acquired:
Point of Time = Acquisition Time – Acquisition Time of
the First Image + Delay
Enhancement Axis (Y)
The absolute mean CT value of each ROI is plotted on
the enhancement axis of the enhancement curve.
C2-025.630.01.01.02_APPLICATIONGUIDE_SPIRIT.book Page 319 Friday, April 8, 2005 9:55 AM