Table 7.

Advice table for the use of CCT and CMR in ischaemic VT ablation procedures

Advice for the use of CCT and CMR in ischaemic VT ablation procedures	Strength of advice	Imaging modality	CT specifications	MR specifications
(1) Pre-procedural imaging is advised to rule out intracavitary ventricular thrombus		CMR or CCT	i.v. contrast injection and imaging in arterial and delayed phase	Early and late gadolinium enhancement sequences/LGE, steady-state free precession sequence (cine)
(2) Pre-procedural imaging may be appropriate to determine scar location		CMR or CCT	i.v. contrast injection and late iodine enhancement	LGE
(3) Pre-procedural imaging may be appropriate to determine scar transmurality		CMR or CCT	i.v. contrast injection and late iodine enhancement	LGE
(4) Pre-procedural imaging (CMR) may be appropriate to determine core–border zone transition		CMR	—	LGE
(5) Post-processing of imaging-derived scar (VT substrate) and integration into 3D mapping system may be appropriate to aid or guide VT ablation		CMR or CCT	i.v. contrast injection arterial phase and late iodine enhancement	LGE

CCT, cardiac computed tomography; CT, computed tomography; CMR, cardiac magnetic resonance imaging; LGE, late gadolinium enhancement; MR, magnetic resonance; VT, ventricular tachycardia.