Siemens SOMATOM Sensation Cardiac Version A60 Operations Instructions download pdf (Page 38)

HeartView CT

How to do it

Calcium Scoring

This application is used for identification and quan-

tification of calcified lesions in the coronary arteries.

It can be performed with both Prospective ECG trigger-

ing (sequen-tial scanning) and Retrospective gating

(spiral scanning) techniques. The following scan pro-

tocols are predefined:

• CaScoreRoutine

– Standard spiral protocol with ECG-gating which

has been clinically used so far, relying on 12-slice

acquisition, 1.5 mm collimation and 0.42 s gantry

rotation time. The table feed is 5.6 mm/rotation.

• CaScoreFastVolume

– Protocol with ECG-gating using 16-slice acquisition,

1.5 mm collimation and 0.42 s gantry rotation time.

With the superior ability of the 16-slice acquisition,

the table feed is increased to 6.8 mm/rotation.

The time to cover a typical scan range of 15 cm will

therefore be reduced to less than 10 s.

• CaScoreSeq

– Sequential scan protocol with ECG-triggering and

simultaneous acquisition of six 3 mm slices.

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Siemens SOMATOM Sensation Cardiac Version A60 Operations Instructions Page 38