Image Quality Criteria

TTE view	Quality criteria
Subcostal 4-chamber view	correct orientation, correct penetration depth, all 4-chambers including the apex shown, MV and TV visualized, no foreshortening, no PM seen
Apical 4-chamber	correct orientation, correct penetration depth, all 4-chambers seen including the apex, MV and TV visualized, septum is cut vertically, no foreshortening, no PM seen
Parasternal long-axis view	correct orientation, correct penetration depth, ventricular septum and aorta ascendens are cut at the same height, AV and MV are visualized, no PM seen
Parasternal short-axis view	correct orientation, LV is viewed in the mid papillary view, two PM visualized, RV crescent-shaped
Pleural scanning	sufficient penetration depth, spleen or liver are visualized in the correct orientation with the lung, Diaphragm visualised

AV, Aortic valve; MV, Mitral valve; TV, Tricuspid valve; LV, Left ventricle; RV, Right ventricle; PM, Papillary muscle; TTE, Transthoracic echocardiography