| 1. | Furlan A, Aghayev A, Chang CC, et al. Short-term mortality in acute pulmonary embolism: clot burden and signs of right heart dysfunction at CT pulmonary angiography. Radiology, 2012, 265 :283 -293. | 
				                                                        
				                                                            
				                                                                | 2. | Stein PD, Athanasoulis C, Alavi A, et al. Complications and validity of pulmonary angiography in acute pulmonary embolism.Circulation, 1992, 85: 462-468. | 
				                                                        
				                                                            
				                                                                | 3. | den Exter PL, Klok FA, Huisman MV. Diagnosis of pulmonary embolism: Advances and pitfalls. Best Pract Res Clin Haematol,2012, 25: 295-302. | 
				                                                        
				                                                            
				                                                                | 4. | Battaglia M, Bucher H, Egger M, et al. The Bayes Library of Diagnostic Studies and Reviews. 2nd edition. 2002.5 Sackett DL, Straus SE, Rithardson WS. Evidence-based medicine:How to practice and teach EBM. 2nd edition. London: Chrchill Livingstone. 2000, 169-182 . | 
				                                                        
				                                                            
				                                                                | 5. | Stein PD, Chenevert TL, Fowler SE, et al. Gadolinium-enhanced magnetic resonance angiography for pulmonary embolism: a multicenter prospective study ( PIOPED III ) . Ann Intern Med,2010, 152 : 434-443. | 
				                                                        
				                                                            
				                                                                | 6. | Pleszewski B, Chartrand-Lefebvre C, Qanadli SD, et al.Gadolinium-enhanced pulmonary magnetic resonance angiography in the diagnosis of acute pulmonary embolism: a prospective study on. | 
				                                                        
				                                                            
				                                                                | 7. | Oudkerk M, van BEJ, Wielopolski P, et al. Comparison of contrastenhanced magnetic resonance angiography and conventional pulmonary angiography for the diagnosis of pulmonary embolism: aprospective study. Lancet, 2002 , 359: 1643 -1647 . | 
				                                                        
				                                                            
				                                                                | 8. | Gupta A, Frazer CK, Ferguson JM, et al. Acute pulmonary embolism: diagnosis with MR angiography. Radiology, 1999 , 210 :353-359. | 
				                                                        
				                                                            
				                                                                | 9. | Meaney JF, Weg JG, Chenevert TL, et al. Diagnosis of pulmonary embolism with magnetic resonance angiography. N Engl J Med,1997, 336: 1422-1427. | 
				                                                        
				                                                            
				                                                                | 10. | Loubeyre P, Revel D, Douek P, et al. Dynamic contrast-enhanced MR angiography of pulmonary embolism: comparison with pulmonary angiography. AJR Am J Roentgenol, 1994, 162 : 1035 -. | 
				                                                        
				                                                            
				                                                                | 11. | Stein PD, Fowler SE, Goodman LR, et al. Multidetector computed tomography for acute pulmonary embolism. N Engl J Med, 2006 ,354: 2317-2327. | 
				                                                        
				                                                            
				                                                                | 12. | Blum A, Bellou A, Guillemin F, et al. Performance of magnetic resonance angiography in suspected acute pulmonary embolism.Hrombosis & Haemostasis, 2005, 93: 503-511 . | 
				                                                        
				                                                            
				                                                                | 13. | Stein PD, Woodard PK, Hull RD, et al. Gadolinium-enhanced magnetic resonance angiography for detection of acute pulmonary embolism: an in-depth review. Chest, 2003, 124: 2324-2328. | 
				                                                        
				                                                            
				                                                                | 14. | Jacschke R, Guyart GH, Sackett DL, et al. Users’guides to the medical literature. III. How to use an artical about a diagnostic test.B. What are the results and will they help me in caring for mypatients? The Evidence-Based Medicine Working Group. JAMA,1994, 271: 703-707. | 
				                                                        
				                                                            
				                                                                | 15. | Salaun PY, Couturaud F, Le DA, et al. Noninvasive diagnosis of pulmonary embolism. Chest, 2011 , 139: 1294 -1298 . | 
				                                                        
				                                                            
				                                                                | 16. | Safriel Y, Zinn H. CT pulmonary angiography in the detection of pulmonary emboli: a meta-analysis of sensitivities and specificities.Clin Imaging, 2002, 26: 101-105. | 
				                                                        
				                                                            
				                                                                | 17. | 郭佑民, 張少娟, 楊健, 等. CT 動脈造影對肺動脈栓塞診斷價值的Meta 分析. 中華放射學雜志, 2004 , 38: 706-710. | 
				                                                        
				                                                            
				                                                                | 18. | Moses LE, Shapiro D, Littenberg B. Combining independent studies of a diagnostic test into a summary ROC curve: data-analytic approaches and some additional considerations. Stat Med, 1993, 12 :1293-1316. | 
				                                                        
				                                                            
				                                                                | 19. | patients. Clin Imaging, 2006, 30 : 166-172. | 
				                                                        
				                                                            
				                                                                | 20. | . |