Operating instructions

212
CoronaryCTA
CoronaryCTALowHeartRateVol
Indications:
This spiral scanning protocol is identical to
CoronaryCTARoutine, except that it uses a lower pitch.
It is is intended for patients with a very low heart rates
below 50 bpm.
Use this protocol for the 3D images display view.
A typical range of 12 cm covering the entire heart can
be done in 19.93 sec.
CorCTALow 2
nd
recon.
3
rd
recon.
kV
120
Effective mAs/
Quality ref.
mAs
700
Rotation Time 0.42 sec.
Acquisition 16 x 0.75 mm
Slice
collimation
0.75 mm
Slice width 3.0 mm 1.0 mm 2.0 mm
Feed/Rotation 2.6 mm
Pitch Factor 0.22
Increment 3.0 mm 0.5 mm 2.0 mm
Kernel B30f B30f B30f
Temp.
resolution
*
* depends on heart rate
up to 105 ms
CTDI
Vol
54.6 mGy
Effective dose Male: 12.06 mSv
Female: 17.17 mSv