Siemens SOMATOM Sensation 16, Инструкция по применению, Страница: 11 / 148

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General
Pitch
In single slice CT:
Pitch = table movement per rotation/slice collimation
E. g.: slice collimation = 5 mm, table moves 5 mm
per rotation, then pitch = 1.
With the SOMATOM Sensation 16, in Siemens multi-
slice CT, we differentiate between:
Feed/Rotation, the table movement per rotation
Volume Pitch, the table movement per rotation/single
slice collimation
E. g.: single slice collimation = 1.5 mm, table moves
24 mm per rotation, then the Volume Pitch = 16
Pitch Factor, the table movement per rotation/
collimation
E. g.: slice collimation = 16 x 1.5 mm, table moves
24 mm per rotation, then the Pitch Factor = 1
With the SOMATOM Sensation 16, you do not need to
select pitch. Once the scan range, scan time, slice colli-
mation, and rotation time is defined, the software will
adapt the table feed per rotation accordingly. The Pitch
Factor can be freely adapted from 0.5 to 1.5.
Recon Job
In the Recon card, you can define up to 3 reconstruction
jobs with different parameters either before or after
you acquire the data. When you click on “Recon“, they
will all be done automatically. In case you want to add
another recon job, simply click the little icon on the
chronicle with the right mouse button and select “delete
recon job“ to delete the one which has been completed,
and then one more recon job will be available in the
Recon card.
(Note: what you delete is just the job from the display,
not the images that have been reconstructed).
You can also reconstruct images for all scan modes
completed at once – do not select any chronicle before
you click “Recon“.