Table 2: Advantages and Disadvantages of Several Three-dimensional Rotational Angiography Workflow Choices.

	Advantage(s)	Disadvantage(s)
Use of GA	Control of apnoea, motion Allows easy asystole	Increases complexity
Conscious sedation	Less complexity	Challenging to get consistent results with direct LA injection workflow
Adenosine for low output	Near-perfect standstill	Impractical without GA Quality degradation in case of PVCs
Rapid RV pacing for low output	Robust workflow, predictable quality	May induce VT/VF Difficult without GA
Direct LA injection	Optimal image quality No need for timing bolus	Needs low output
Indirect RA/AP injection	No need for GA/asystole	Needs timing of bolus Image quality degradation Difficult long apnoea

AP = arteria pulmonalis; GA = general anaesthesia; LA = left atrium; PVCs = premature ventricular contractions; RA = right atrium; RV = right ventricle; VF = ventricular fibrillation; VT = ventricular tachycardia.