Table 3.

Procedural modifications simulated

Simulation	Initial projection	Rotation
Rotation from initial PA projection	PA	LAO, RAO, CRA, CAU
Rotation from initial LAO/RAO projection	30° LAO	LAO, RAO, CRA, CAU
	60° LAO	RAO, CRA, CAU
	30° RAO	LAO, RAO, CRA, CAU
Rotation from initial compound projection	60° LAO+30° CRA*	RAO, CRA, CAU
	30° RAO+30° CRA†	LAO, RAO, CRA, CAU

*Often used to visualise left main stem and distal LAD coronary arteries.¹⁸

†Often used to visualise the middle segment of the LAD.¹⁸

CAU, caudal; CRA, cranial; LAD, left anterior descending; LAO, left anterior oblique; PA, posteroanterior; RAO, right anterior oblique.