Siemens syngo CT 2005C - Manual (Page 311)

syngo Dynamic Evaluation
311
Each time you make a change to the original data set
(by removing images, and/or defining a new baseline
image) your system recalculates the parameter images
based on the existing images.
– The average image is an averaged addition of all
pixels at each pixel location across the images of the
tomo segment.
– MIP image: Parameter image where each pixel is the
maximum value of all images at that pixel location.
The image data is checked pixel by pixel. The pixels
with the maximum intensity are displayed in an
image.
– Time to Peak image: Parameter image where each
pixel indicates the period of time (in tenths of a sec-
ond) from the time when the first image was
acquired (Delay = 0) or the time when the contrast
was injected (Delay > 0) to the time when the high-
est CT value is reached at that pixel location. The
longer the time period until the peak CT value is
reached, the brighter the pixels.
With a Time to Peak image, for example, you can easily
detect structures in which the contrast did not spread
as fast as in comparable structures.
Hint: The time to peak (in seconds) at the cursor posi-
tion in the Time to Peak image is the CT value displayed
in the lower right corner divided by 10.
C2-025.630.01.01.02_APPLICATIONGUIDE_SPIRIT.book Page 311 Friday, April 8, 2005 9:55 AM