2010;3:473 81. 213. Motoyama S, Kondo T, Sarai M, et al. Multislice computed tomo- graphic characteristics of coronary lesions in acute coronary syn- dromes. J Am Coll Cardiol. 2007;50:319 26. 214. Villines TC, Hulten EA, Shaw LJ, et al. Prevalence and Severity of Coronary Artery Disease and Adverse Events Among Symptomatic Patients With Coronary Artery Calcification Scores of Zero Undergoing Coronary Computed Tomography Angiography: Results From the CONFIRM (Coronary CT Angiography Evaluation for Clinical Outcomes: An International Multicenter) Registry. J Am Coll Cardiol. 2011;58:2540. 215. Shmilovich H, Cheng VY, Tamarappoo BK, et al. Vulnerable plaque features on coronary CT angiography as markers of inducible regional myocardial hypoperfusion from severe coronary artery stenoses. Ath- erosclerosis. 2011;219:588 95. 216. Lin FY, Shaw LJ, Dunning AM, et al. Mortality risk in symptomatic patients with nonobstructive coronary artery disease: a prospective 2-center study of 2,583 patients undergoing 64-detector row coronary computed tomographic angiography. J Am Coll Cardiol. 2011;58: 510 9. 217. Agatston AS, Janowitz WR, Hildner FJ, et al. Quantification of coronary artery calcium using ultrafast computed tomography. J Am Coll Cardiol. 1990;15:827 32. 218. O Rourke RA, Brundage BH, Froelicher VF, et al. American College of Cardiology/American Heart Association expert consensus document on electron-beam computed tomography for the diagnosis and prognosis of coronary artery disease. J Am Coll Cardiol. 2000;32: 326 40. 219. Akram K, O Donnell RE, King S, et al. Influence of symptomatic status on the prevalence of obstructive coronary artery disease in patients with zero calcium score. Atherosclerosis. 2009;203:533 7. 220. Cademartiri F, Maffei E, Palumbo A, et al. Diagnostic accuracy of computed tomography coronary angiography in patients with a zero calcium score. Eur Radiol. 2010;20:81 7. 221. Haberl R, Tittus J, Bohme E, et al. 