Specific anatomic region	Coronary
Application	Coronary CTA - coronary artery disease
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.