Pitch; Recon Job - Siemens SOMATOM Emotion 6 Application Manual

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 Emotion 6, in Siemens Multislice
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 = 1.0 mm, table moves
6 mm per rotation, then the Volume Pitch = 6
Pitch Factor, the table movement per rotation/
collimation
E. g.: slice collimation = 6 x 1.0 mm, table moves
6 mm per rotation, then the Pitch Factor = 1
With the SOMATOM Emotion 6, you do not need to
select pitch. Once the scan range, scan time, slice
collimation, 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 – 1.8.

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.
Once reconstructed, these completed recon jobs stay
in the browser, until deleted from the hard drive). You
can also reconstruct images for all scans performed by
not selecting any range in the chronicle, prior to clicking
"Recon".
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