|
Specific
anatomic region
|
Coronary |
|
Application
|
Coronary
CTA |
|
Author
|
Elliot
K Fishman, MD
|
|
Reference
Source
|
JHU
Protocol
|
|
Scanner
Used
|
Siemens
Sensation 64
|
|
KV/Effective
mAs/ Rotation time (sec)
|
Calcium
scoring: 120 / 209 / 1.5 sec cycle time
Test bolus 120 / 40 / 2.0 sec cycle time
CTA 120 / 850 / 0.33 sec |
|
Detector
Collimation (mm)
|
0.6
|
|
Slice
thickness (mm)
|
0.75mm (thin)
3.0mm (thick) |
|
Pitch
|
Calc
score 18.0 feed
Test bolus 0.0mm feed
CTA 0.2mm |
|
Kernel
|
B25f
smooth ++ mediastinum (calcium score)
B20f smooth mediastinum (test bolus)
B10f very smooth cardiac (thin)
B25f smooth ++ cardiac (thick)
B20f smooth cardiac (multi) |
|
Reconstruction
interval
|
0.5mm
(thin)
3.0mm (thick)
0.6mm (multi) |
|
Image
order (acquisition)
|
Cr-ca
|
|
Oral
contrast
|
N/A |
|
IV
contrast volume and type
|
100
cc of Visipaque 320
20 cc for test bolus
80 cc CTA |
|
Injection
rate
|
4
cc/ sec |
|
Scan
delay (sec)
|
10
sec test bolus
CTA depends on outcome of test bolus usually 25-30 sec |
|
3D
technique used
|
VRT,
MIP, & MPR |
|
Comment:
Also have protocol using 0.37 rotation time for patient
with heart rates under 50 bpm.
|
