Table 1 Information provided by CT prior to various types of cardiothoracic surgery and percutaneous intervention

Re-operative cardiothoracic surgery

Relationship of cardiovascular structures to sternum.

Relationship of coronary bypass grafts to sternum

Atherosclerotic calcification of ascending aorta

Anatomy of subclavian & axillary arteries and aortic arch

Percutaneous aortic valve

Aortic root dimensions

LV outflow tract: size; septal thickness

Leaflet morphology/calcification

Valve area

Leaflet opening

Distance between annulus and coronary ostia

Leaflet length

Relationship of aortic root to body axis

Caliber and contour of access vessels

Pulmonary venous ablation

Pulmonary venous anatomy

Branching pattern

Orientation

Ostial size and pulmonary venous stenosis

Left atrial dimensions

Thrombus

Relationship to oesophagus

Robotic mitral valve repair

Annulus and leaflet morphology

Mitral annular calcification

Annulus dimensions

Calibre of femoral vessels

Atherosclerosis of access vessels

Distance from sinotubular junction to arch

Cardiac resynchronisation therapy

Coronary venous anatomy

Scar in lateral wall

Percutaneous mitral annuloplasty

Distance between coronary sinus/GCV and annulus

LCX between CS-GCV and annulus

Calcification of mitral annulus

Atrial septal defect closure

Type of defect

Size of defect

Rim of defect

Associated cardiovascular anomalies

Thrombus

Ventricular septal defect closure

Type of defect

Size of defect

Shape of defect

Proximity to valves and AV conduction bundle

Endovascular stent grafts

Measurement of the primary pathology

Maximal aortic diameter at the landing zone/neck

Thrombus/atheroma in the landing zone

Distance from major branch vessel

Angulation at diaphragm

Calibre of femoral/iliac arteries

Percutaneous pulmonary valve implantation

Calibre of RV-PA conduit

Length of the conduit available from pulmonary artery bifurcation

RVOT/pulmonary trunk morphology

Position of proximal coronary arteries