9Mettler FA Jr,Bhargavan M,Faulkner K,et al.Radiologic and nuclear medicine studies in the United States and worldwide:frequency,radiation dose,and comparison with other radiation sources:1950-2007.Radiology,2009,253:520-531.
10Bluemke DA,Achenbach S,Budoff M,et al.Noninvasive coronary artery imaging:magnetic resonance angiography and multidetector computed tomography angiography:a scientific statement from the american heart association committee on cardiovascular imaging and intervention of the council on cardiovascular radiology and intervention,and the councils on clinical cardiology and cardiovascular disease in the young.Circulation,2008,118:586-606.
