Fig. 4.
Alternative diagnostic algorithm. * If risk factor diabetes or hypertension is present, patients are categorised to high pre-test probability category. CCS: coronary calcium score (expressed as Agatston Score), CTCA: computed tomography coronary angiography, ICA: invasive coronary angiography, RCA: right coronary artery, Cx: left circumflex artery, LM: left main, LAD: left anterior descending artery, 3-VD: three-vessel disease. Ischaemic testing includes stress myocardial perfusion imaging: SPECT or single photon emission computed tomography [relative flow], PET or positron emission tomography [absolute flow], MRI or magnetic resonance imaging [flow reserve]; stress echocardiography [wall motion]