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Scan and Reconstruction

Acquisition, Slice Collimation

and Slice Width

Slice collimation is the slice thickness resulting from

the effect of the tube-side collimator and the adaptive

detector array design. In Multislice CT, the Z-coverage

per rotation is given by the product of the number of

active detector slices and the collimation (e.g. 6 x

1.0mm for the SOMATOM Emotion 6-slice configura-

tion or 16 x 0.6mm for the SOMATOM Emotion 16-

slice configuration ).

Slice width is the FWHM (full width at half maximum)

of the reconstructed image.

With the SOMATOM Emotion 6/16-slice configuration,

you select the slice collimation together with the slice

width desired. The slice width is independent of pitch,

i.e. what you select is always what you get. Actually,

you do not need to care about the algorithm any more;

the software does it for you.

If Metrorecon/Fastrecon is not selected you will rou-

tinely get “Real Time” images. The Recon icon on the

chronicle will be labeled with “RT”. After the scan the

Real Time displayed image series has to be recon-

structed.

In some cases – this depends also on Scan pitch and

Reconstruction increment – the Recon icon on the

chronicle will be labeled with “RT”. This indicates the

Real Time display of images during scanning. The Real

Time displayed image series has to be reconstructed

after completion of spiral.

The Acq (Acquisition) is displayed on the Examination

task card. The Acquisition is simply "number of slices

acquired per rotation" x "width of one slice".

Siemens SOMATOM Manual&Nbsp;

Other manuals for Siemens SOMATOM