Assistant Professor of Medicine, Division of Cardiology;
University of Texas Health Science Center at San Antonio; 1978 to 1982.

Assistant Professor of Radiology, Division of Nuclear Medicine;
University of Texas Health Science Center at San Antonio; 1978 to 1982.

Assistant Director, Cardiac Catheterization Laboratory; Audie Murphy VA Hospital, San Antonio, Texas; 1978 to 1982.

Staff Cardiologist, Audie Murphy VA Hospital; San Antonio, Texas; 1978 to1982.

Staff Cardiologist, Medical Center Hospital; San Antonio, Texas; 1978 to 1982.

Director, Nuclear Cardiology, Division of Cardiology; LDS Hospital, Salt Lake City, Utah; 1982 to 2005.

Associate Professor of Medicine (Clinical), Division of Cardiology; University of Utah, Salt Lake City, Utah; 1982 to 1991.

Professor of Medicine (Clinical), Division of Cardiology; University of Utah; Salt Lake City, Utah; 1991 to 2005.

Cardiac Transplantation Physician, Utah Cardiac Transplant Program; LDS Hospital, Salt Lake City, Utah; 1985 to 2000.

Co-Director, Cardiac Catheterization Laboratory; LDS Hospital, Salt Lake City, Utah; 1986 to 1989.

Director, Cardiac Catheterization Laboratory; LDS Hospital; Salt Lake City, Utah; 1990 to 2007.

Director, Cardiac Catheterization Laboratory; Dixie Regional Medical Center; St. George, Utah; 1992 to 1994.

Staff Cardiologist, Intermountain Medical Center, Salt Lake City, UT;  2007 to present.

Washington Medical License, #14758 1974 to 1984
Texas Medical License #2454 1978 to 1985
Utah Medical License #07205 1982 to present
Nuclear Regulatory Commission Licensure
for Group I, II, and III Radiopharmaceuticals 1981 to present
Certified, National Board of Medical Examiners 1974
Certified, American Board of Internal Medicine 1976
Certified, ABIM Cardiovascular Disease 1979
Certified, ABIM Interventional Cardiology 2001

1. Kennedy JW, Sorensen, SG, Ritchie JL, Folland ED, Hamilton GW: Radionuclide angiography for the evaluation of anthracycline therapy. Cancer Treatment Reports 62:941, 1978.

2. Ritchie JL, Sorensen SG, Hamilton GW: Radionuclide angiography: Noninvasive assessment of hemodynamic changes following nitroglycerin. Am J Cardiol 43:278-284, 1979.

3. Sorensen SG, Hamilton GW, Williams DL, Ritchie JL: R-wave synchronized blood pool imaging: A comparison of accuracy and reproducibility of fixed and computer-automated varying regions-of-interest for determining left ventricular ejection fraction. Radiology 131:473-478, 1979.

4. Caldwell JL, Hamilton GW, Sorensen SG, Ritchie JL, Williams DL, Kennedy JW: The detection of coronary artery disease with radionuclide techniques. A comparison of rest and exercise thallium imaging and ejection fraction response. Circulation 61:610- 619, 1980.

5. Ritchie JL, Singer JW, Thorning D, Sorensen SG, Hamilton GW: Anthracycline cardiotoxicity: Clinical and pathologic outcomes assessed by radionuclide ejection fraction. Cancer 46:1109-1116, 1980.

6. Nusynowitz ML, Sorensen SG; Nuclear medicine techniques in the diagnosis and management of myocardial infarction and its sequelae. Seminars in Family Medicine 1:25-33, 1980.

7. Sorensen SG, Ritchie JL, Caldwell JH, Hamilton GW, Kennedy JW: Serial exercise radionuclide angiography: Validation of count-derived changes in cardiac output and quantitation of maximal exercise volume changer after nitroglycerin and propanolol in normal men. Circulation 61:600-609, 1980.

8. Caldwell JH, Hamilton GW, DeRouen TA, Williams DL, Ritchie JL, Sorensen SG: Senal measurement of ventricular ejection fraction by radionuclide angiography: A methodologic and statistical approach. Der Nuklear Mediziner 2:36-47, 1979.

9. Sorensen SG, O'Rourke RA, Chaudhuri TK: Noninvasive quantitation of valvular regurgitation by gated equilibrium radionuclide angiography. Circulation 62:1089, 1980.

10. Sorensen SG, Caldwell JH, Ritchie JL, Hamilton GW: "Abnormal" responses of ejection fraction to exercise in healthy subjects caused by region-of-interest. J Nucl Med 22 (1):1-7, 1981.

11. Starling MR, Crawford MH, Sorensen SG, Levi B, Richards KL, O'Rourke RA: Comparative accuracy of apical biplane cross-sectional echocardiography and gated equilibrium radionuclide angiography for estimating left ventricular size and performance. Circulation 63:1075, 1981.

12. Starling MR, Crawford MH, Sorensen SG, O'Rourke RA:  A new two-dimensional echocardiographic technique for evaluating right ventricular size and performance in patients with obstructive lung disease. Circulation 66:612-620, 1982.

13. Horvitz LD, Groves BM. Walsh RA, Sorensen SG, Larson TW: Functional significance of coronary collateral vessels in coronary artery disease. Am Heart J 104:221-225, 1982

14. Sorensen SG, Chaudhuri TK, O'Rourke RA: Noninvasive quantitation of right ventricular volume overload in adults by gated equilibrium radionuclide angiography. J Nucl Med, 23:957-964, 1982.

15. Sorensen SG, Crawford M, Richards KL, Chaudhuri TK, O'Rourke RA: Noninvasive detection of ventricular aneurysm by combined two-dimensional echocardiography and equilibrium radionuclide angiography. Am Heart J 104:145-152, 1982.

16. Morrison D, Sorensen SG, Caldwell J, Wright AL, Ritchie JL, Kennedy JW, Hamilton GW:  The normal right ventricular response to supine exercise. Chest 82:686-691, 1982.

17. Richards KL, Cannon SR, Crawford MH, Sorensen SG:  Noninvasive diagnosis of aortic and mitral valve disease with pulsed-doppler spectral analysis. Am J Cardiol 51:1122- 1127, 1983.

18. Crawford MH, Petru MA, Amon KW, Sorensen SG, Vance WS: Comparative values of two-dimensional echocardiography and radionuclide angiography for quantifying changes left ventricular performance during exercise limited by angina pectoris. Am J Cardiol 53-4:2-46, 1984.

19. Petru MA, Crawford MH, Sorensen SG, Chaudhuri TK, Levine S, O'Rourke RA: Short and long-term efficacy of high dose oral diltiazem for angina due to fixed coronary artery disease: A placebo-controlled, randomized double blind crossover study. Circulation 68:139-147, 1983.

20. Petru MA, Sorensen SG, Chaudhuri TK, Rosen P, O'Rourke RA: Attenuation correction of equilibrium radionuclide angiography for noninvasive quantitation of cardiac output and ventricular volume. Am Heart J 107:1221-1228, 1984.

21. Morrison D, Goldman S, Henry R, Wright AL, Sorensen SG, Caldwell J, Ritchie J: The effect of pulmonary hypertension on systolic function of the right ventricle. Chest 84:250-257, 1983.

22. Kern MJ, Sorensen SG, Petru MA, Richards KL; Angioplasty catheter communication mimicking coronary arterial dissection. Cathet Cardiovasc Diagn 9:401-405, 1983.

23. Starling MR, Crawford MH, Sorensen SG, Grover FL: Comparative value of invasive and noninvasive techniques for identifying left ventricular mural thrombi. Am Heart J 106:1143-1149, 1983.

24. Richards K, Cannon S, Crawford M, Sorensen SG; Pulsed doppler echocardiographic assessment of the severity of aortic stenosis. INSERM 111:331-344, 1982.

25. Anderson JL, Marshall HW, Asians JC, Lutz JR, Sorensen SG, Menlove RL, Yanowitz FG, Hagan AD: A randomized trial of intravenous versus intracoronary streptokinase in acute myocardial infarction. Circulation 7:606-618, 1984.

26. Sorensen SG, Groves B, Horwitz L, Chaudhuri TK: Regional myocardial blood flow in man during intravenous dipyridamole, Chest 87:735-739, 1985.

27. Anderson JL, Lutz JR, Gilbert EM, Sorensen SG. Yanowitz FG, Menlove RL, Bartholomew MB: A randomized trial of low-dose beta-blockade for idiopathic dilated cardiomyopathy. Am J Cardiol 55:471-475, 1985.

28. Gould KL, Sorensen SG, Albro P, Caldwell JH, Chaudhuri T, Hamilton GW: Thallium-201 myocardial imaging during coronary vasodilation induced by oral dipyridamole. J Nucl Med 27:31-36.1986.

29. Hackworthy RA, Sorensen SG, Menlove RL, Anderson JL for the APSAC Multicenter Investigators: Electrocardiographic and enzymatic infarct size of a randomized study of intracoronary streptokinase and intravenous anisoylated plasminogen-streptokinase activator complex (APSAC) in acute myocardial infarction. Drugs 1987: 33 (Suppl III): 198-208.

30. Sorensen SG, Hackworthy RA, Fitzpatrick PG, Barry WH, Menlove RL, Anderson, J.L. for the APSAC Multicenter Investigators: Acute myocardial occlusion and reperfusion: reliability of angiographic classification and grading. Drugs 1987: 33 (Suppl III): 163-168.

31. Anderson JL (APSAC Multicenter Investigators): Reperfusion in acute myocardial infarction. A multicenter randomized trial of early intracoronary streptokinase and intravenous anisoylated plasminogen streptokinase activator complex in the United States. Drugs 1987:33 (Suppl III): 154-162.

32. Renlund DL, Bristow MR, Gaye WA Jr., and the Utah Transplant Affiliated Hospital Cardiac Transplant Program: Survival following cardiac transplantation: What are acceptable standards? West J Med (submitted for publication in 1987).

33. Renlund DL, Gilbert EM, O'Connell JB, and the UTAH Cardiac Transplant Program: Age associated decline in cardiac allograft rejection. Am J Med 83:391, 1987.

34. Anderson JL, Rothbard RL, Hackworthy RA, Sorensen SG, Fitzpatrick PG, Dahl CF, Hagan AD, Browne KF, Symkoviak GP, Menlove RL, Barry WH, Eckerson HW, Marder VJ: Randomized reperfusion comparison of intravenous thrombolytic therapy with anisoylated plasminogen strepokinase activator complex (APSAC) and intracoronary therapy with streptokinase in acute myocardial infarction. J Am Coll Cardiol 11:1153-1163, 1988.

35. Hackworthy RA, Sorensen SG, Fitzpatrick PG, Barry WH, Menlove RL, Rothbard RL, Anderson JL for the APSAC Investigators: Dependence of assessment of coronary artery reperfusion during acute myocardial infarction on angiographic criteria and interobserver variability. Am J Cardiol: 62-538-542, 1988.

36. Hackworthy, RA, Sorensen SG, Fitzpatrick PG, Barry WH, Menlove RL, Rothbard RL, Andersen JL for the APSAC Investigators: Effects of reperfusion on electrocardiographic and enzymatic infarct size: Results of a randomized multicenter study of intravenous anisoylated plasminogen strepokinase activator complex; (APSAC) versus intracoronary streptokinase in acute myocardial infarction. Am J Heart 116: 903-9l3, 1988.

37. Anastasiou-Nana MI, Sorensen SG, Fowles RE, Allison SB, Nanas JN, Anderson JL: Validation of a new femoral venous method of endomyocardial biopsy: comparison with internal jugular approach. J Interventional Cardiol I (4)-263-271, 1988.

38. Brenner B, Francis CW, Fitzpatrick PG, Hackworthy RA, Sorensen SG. Cox C, Rothbard RL, Anderson JL. Marder VJ: Relation of pre- and post-thrombotic treatment plasma D-Dimer concentrations to coronary artery reperfusion in patients with acute myocardial infarction. Am J Cardiol 63-1179-1184, 1988.

39. Anastasiou-Nana, MI, O'Connell, JB, Nanas JN, Sorensen SG, Anderson JL:  Relative efficiency and risk of endomyocardial biopsy in heart transplant versus non-transplant patients.Cathet Cardiovasc Diagn 1989; 18(1):7-11

40. Khuri SS, Folland ED, Sethi GK, Souchek J, Oprian C, Wong M, Burchfiel C. Henderson WG, Hammermeister KE, and participants of the Veterans Administration Cooperative Study on Valvular Heart Disease: Six months of postoperative hemodynamics of the Hancock heterograft and the Bjork-Shiley prosthesis. Results of a Veterans Administration cooperative prospective randomized trial. J Am Coll Cardiol 12:8-18, 1988.

41. Sorensen SG, Hackworthy RA, Fitzpatrick PG, Menlove R, Anderson JL:  Variability of thrombolytic coronary reperfusion and angiographic study of streptokinase and anistreplase. Clin Cardiol 13: V15-19, 1990.

42. Anderson JL, Sorensen SG, Moreno FL. Hackworthy RA, Browne KF, Dale HT, Leya F, Eckerson HW, Marder VJ, and the TEAM 2 Study Investigators: Multicenter patency trial of intravenous anistreplase compared with streptokinase in acute myocardial infarction. Circulation 83: 1991.

43. Anderson JL, Becker LC, Sorensen SG, Karagounis L, Moreno FL, Browne KF, Shah PK, Morris DC, Fintel DJ, Mueller HS, Ross AM, Hall SM, Askins JC, Doorey AJ, Grines CL, Daly KN, Maroko P, Marder V, for the TEAM-3 Investigators: Anistreplase versus alteplace in acute myocardial infarction: Comparative effects on left ventricular function, morbidity and 1-day coronary artery patency. J Am Coll Cardiol 20:753-766, 1992.

44. Karagounis L, Sorensen SG, Menlove RL, Moreno F, Anderson JL, for the TEAM-2 Investigators: Does thrombolysis in myocardial infarction (TIMI) perfusion grade 2 represent a mostly patent artery or a. mostly occluded artery? Enzymatic and electrocardiographic evidence from the TEAM-2 study. J Am Coll Cardiol 19:1-10,1992.

45. Anderson JL, Karagounis L, Becker LC, Sorensen SG, Menlove RL, for the TEAM-3 Investigators:  TIMI perfusion grade 3 but not grade 2 results in improved outcome after thrombolysis for myocardial infarction. Ventricular, enzymatic, and electrocardiographic evidence from TEAM-3 study. Circulation 87:1829-1839, 1993.

46. Karagounis LA, Anderson JL, Sorensen SG, Moreno FL for the TEAM-3 Investigators: Relation of reperfusion success with anistreplase or alteplase in acute myocardial infarction to body weight. Am J Cardiol 73:16-22,1994.

47.  Karagounis LA, Anderson JL, Moreno FL, Sorensen SG:  Multivariate associates of QT dispersion in patients with acute myocardial infarction: primacy of patency status of the infarct-related artery.  TEAM-3 Investigators.  Third trial of Thrombolysis with Eminase in Acute Myocardial Infarction.  AM Heart J 1998; 135(6): 1027-35

48.  Duffin DC, Muhlestein JB, Allisson SB, Horne BD, Fowles RE, Sorensen SG, Revenaugh JR, Blair TL, Lappe DL:  Femoral arterial puncture management after percutaneous coronary procedures: a comparison of clinical outcomes and patient satisfaction between manual compression and two different vascular closure devices.  J Invasive Cardiol 2001; 13(5):354-62

49.  Muhlestein JB, Anderson JL, Cui C, Lan Y, Blair TL, Bunch TJ, Pearson RR, Sorensen SG, Renlund DG, Zhang L, Horne BD, Vincent GM.  Improved long-term survival associated with stent deployment during percutaneous coronary interventions: results from a registry of 3399 patients.  Am Heart J. 2005; 150(1):182-7

1. Sorensen SG, Williams DL, Hanna JE, Hamilton GW: The R-wave synchronized blood pool ejection fraction: A comparison of accuracy and reproducibility of fixed and computer automated, varying left ventricular regions-of-interest. J Nucl Med 19:699, 1978; Society of Nuclear Medicine, 25th Annual Meeting, June 27-30, 1978; Anaheim, California.

2. Sorensen SG, Ritchie JL, Hamilton GW, Kennedy JTW: Radionuclide angiography: Serial assessment of cardiac output and ejection fraction following nitroglycerin. J Nucl Med 19:735, 1978; Society of Nuclear Medicine, 25th Annual Meeting, June 27-30, 1978; Anaheim, California.

3. Ritchie JL, Sorensen, SG, Narahara KA, Singer JW, Hamilton GW:  Radionuclide ejection fraction: prediction of adriamycin cardiotoxicity. J Nucl Med 19:671, 1978; Society of Nuclear Medicine, 25th Annual Meeting, June 27-30.1978; Anaheim, California.

4. Hamilton GW, Caldwell JH, Sorensen SG, Ritchie JL, Albro PC, Kennedy JW: Serial exercise radionuclide angiography: validation of count derived cardiac output, ventricular volumes, and ejection fraction. Second International Congress of World Federation of Nuclear Medicine and Biology II:1, 1978, September 18-21,1978; Washington, D.C.

5. Hamilton GW, Caldwell JH, Sorensen SG, Ritchie JL, Albro PC, Kennedy JW: Exercise radionuclide left ventricular function and thallium imaging in coronary artery disease. Second International Congress of World Federation of Nuclear Medicine and Biology II:8, 1978, September 18-21, 1978; Washington, D.C.

6. Hamilton GW, Caldwell JH, DeRouen TA, Williams DL, Sorensen SG, Ritchie JL: Serial measurement of ejection fraction by radionuclides: A methodologic and statistical approach. Second International Congress of World Federation of Nuclear Medicine and Biology II; 53, 1978.

7. Caldwell J, Sorensen SG, Albro PC, Ritchie J, Hamilton GW, Kennedy JW: Sensitivity and specificity of exercise ejection fraction measurement and thallium myocardial imaging. Circulation 58 (11): II-506. 1978.

8. Sorensen SG, Caldwell JH, Ritchie JL, Hamilton GW, Kennedy JW' Serial exercise radionuclide angiography: Fick validation of count derived cardiac output in normal men. Am J Cardiol 43:355, 1979. American College of Cardiology, 28th Annual Scientific Session, March 11-15, 1979; Miami, Florida.

9. Sorensen SG, Caldwell JH, Ritchie JL, Hamilton GW, Kenned}', JW:  Intervention radionuclide angiography: Serial quantitation of ventricular volume response to maximal exercise, nitroglycerin, and propanolol in normal men. Am J Cardiol 43:399, 1979. American College of Cardiology, 28th Annual Scientific Session, March 11-15, 1979; Miami, Florida.

10. Caldwell J, Sorensen SG, Ritchie J, Hamilton G, Kennedy JW: Exercise radionuclide ventriculography and thallium imaging: Comparison of sensitivity and specificity. Am J Cardiol 43:432,1979. American College of Cardiology, 28th Annual Scientific Session, March 11-15, 1979; Miami, Florida.

11. Groves BM, Walsh RA, Sorensen SG, Horwitz LD: Effect of sublingual nitroglycerin on regional myocardial blood flow in patients with coronary artery disease at rest and during spontaneous angina pectoris. Clin Res 27:5A, 1979.

12. Sorensen SG, Groves BM, O'Rourke RA, Chaudhuri T: Noninvasive quantitation of valvular regurgitation by gated equilibrium radionuclide angiography. J Nucl Med 20:625, 1979. Society of Nuclear Medicine 26th Annual Meeting, June 26-29,1979; Atlanta, Georgia.

13. Sorensen SG, Caldwell JH, Ritchie JL, Hamilton GW, Kennedy JW: Intervention radionuclide angiography: Fick validation of serial ventricular volume response to exercise in normal men. J Nucl Med 20:626, 1979. Society of Nuclear Medicine 26th Annual Meeting, June 26-29, 1979; Atlanta. Georgia.

14. Starling M, Sorensen S, Crawford M, Amon W, O'Rourke R-: Cross-sectional echocardiographic assessment of right ventricular size and performance in obstructive pulmonary disease (OPD) patients. Circulation 60:II-202,1979. American Heart Association 52nd Scientific Sessions, November 12-15.1979; Anaheim, California.

15. Sorensen S, O'Rourke R: Quantitation of valvular regurgitation by gated equilibrium radionuclide angiography. Circulation 60:II-242, 1979. American Heart Association 52nd Scientific Sessions, November 12-15, 1979; Anaheim, California.

16. Sorensen S, O'Rourke R: Quantitation of ventricular volume overload by gated equilibrium radionuclide angiography. Clin Res 27:734A, 1979. American Federation for Clinical Research, January 24-26, 1980; New Orleans, Louisiana.

17. Forts D, Sorensen S, O'Rourke R, Chaudhuri T: Reversibility of adriamycin induced reduction in myocardial thallium-201 uptake by intravenous digoxin. Clin Res 27:727A, 1979. American Federation for Clinical Research, January 24-26,1980; New Orleans, Louisiana.

18. Starling MR, Crawford MH, Levi B, Sorensen SG, Richards KL, O'Rourke RA: Accuracy of cross-sectional echocardiography and gated equilibrium radionuclide angiography for estimating left ventricular size and performance. Clin Res 27:734A, 1979. American Federation for Clinical Research, January 24-26,1980; New Orleans, Louisiana.

19. Starling M, Crawford M, Levi B, Sorensen S, Richards K, O'Rourke R: Comparative efficacy of cross-sectional echocardiography and gated equilibrium radionuclide angiography for assessing left ventricular size and performance. Am J Cardiol 45:403, 1980, American College of Cardiology 29th Annual Scientific Sessions, March 9-13, 1980; Houston. Texas.

20. Forst D, Sorensen S, O'Rourke R, Chaudhuri T: Reversibility of adriamycin induced reduction in myocardial thallium-201 uptake by intravenous digoxin. Am J Cardiol 45:482, 1980. American College of Cardiology, 29th Annual Scientific Session, March 9-13, 1980; Houston, Texas.

21. Sorensen S, 0'Rourke R, Chaudhuri TK: Quantitation of right ventricular volume overload by gated equilibrium radionudide angiography. J Nucl Med 20:50,1980. Society of Nuclear Medicine 27th Annual Meeting, June 24-27, 1980; Detroit, Michigan. 22. Sorensen S, Groves B, Chaudhuri T: Regional myocardial blood flow and hemodynamics in man after intravenous dipyridamole. Circulation 62:111-9, 1980. American Heart Association 53rd Scientific Session, November 17-20,1980; Miami, Florida.

23. Sorensen S, Crawford M, Richards K, Chaudhuri T, O'Rourke R: Noninvasive detection of ventricular aneurysms by combined two-dimensional echocardiography and radionuclide angiography. Circulation 62:111-121, 1980. American Heart Association 53rd Scientific Session, November 17-20, 1980; Miami, Florida.

24. Sorensen SG, Caldwell JH, Ritchie JL, Hamilton GW: Abnormal ejection fraction response in normal men during exercise radionuclide angiography due to method of region-of-interest selection. Clin Res 28:881A, 1981. Southern Society for Clinical Investigation, January 15-17,1981; New Orleans, Louisiana.

25. Richards KL, Sorensen SG, Hartley C, Dole WP: Doppler-Sones quantitation of coronary blood flow in man during dipyridamole coronary vasodilation. Am J Cardiol 47:407, 1981. American College of Cardiology 30th Annual Scientific Sessions, March 15-19 1981; San Francisco, California.

26. Chaudhuri TK, Sorensen SG, Groves BM: Dipyridamole intervention regional blood flow and hemodynamic study in man. J Nucl Med 22:41, 1981. Society of Nuclear Medicine 28th Annual Meeting, June 16-19, 1981; Las Vegas, Nevada.

27. Dole WP, Richards KL, Sorensen S, Hartley C: Intravenous coronary artery pressure flow relations during single diastoles in man. Circulation 64 :IV 438,1981. American Heart Association, 54th Scientific Sessions, November 16-19,1981; Dallas, Texas.

28. Crawford MH, Amon KW, Vance WS, Sorensen SG, Rabinowitz AC: Advantage of two-dimensional echo over radionuclide angiography for detecting acute changes in LV performance during exercise. Circulation 64 :IV 19,1981. American Heart Association, 54th Scientific Sessions, November 16-19,1981; Dallas, Texas.

29. Richards KL, Hartley CJ, Dole WP, Sorensen SG: Doppler-Sones assessment of coronary vascular reserve. ACEMB Proceedings 23:95, 1981.

30. Hartley CJ, Richards KL, Sorensen SG, Dole WP; Clinical applications of a pulsed Doppler coronary catheter. ACEMB Proceedings 23:94, 1981.

31. Petru MA, Sorensen SG, Chaudhuri TK, O'Rourke RA: Determination of cardiac output by attenuation corrected radionuclide angiography. Circulation 64:IV-106, 1981. American Heart Association 54th Annual Scientific Sessions, November 16-19,1981; Dallas, Texas.

32. Petru MA, Crawford MH, Sorensen SG, O'Rourke RA: Improvement of exercise left ventricular performance by high dose diltiazem in patients with angina due to fixed coronary artery disease. Clin Res29:815A, 1982. American Federation for Clinical Research, Southern Section, January 14-16,1982; New Orleans, Louisiana.

33. Morrison DA, Sorensen S. Caldwell J. Wright AL, Ritchie J, Kennedy JW, Hamilton G: The normal right ventricular response to supine exercise. Clin Res 30:16A, 1982. American Federation for Clinical Research, Western Section, February 3-5, 1982.

34. Richards KL, Cannon SR, Sorensen SG, Crawford MH: Diagnosis of valvular disease with Doppler real-time spectral analysis. Am JCardiol 49:960, 1982. American College of Cardiology 31st Annual Scientific Sessions, April 25-29,1982; Atlanta, Georgia.

35. Starling MR, Crawford MH, Sorensen SG, Grover PL: Detection of left ventricular mural thrombus: comparative value of invasive and noninvasive techniques. Am J Cardiol 49:936, 1982. American College of Cardiology 31st Annual Scientific Sessions, April 25-29,1982; Atlanta, Georgia.

36. Petru MA, Crawford MH, Sorensen SG, O'Rourke RA: Beneficial effects of high dose diltiazem on exercise left ventricular performance in patients with angina pectoris due to fixed coronary artery disease. Am J Cardiol 49:895, 1982. American College of Cardiology 31st Annual Scientific Sessions, April 25-29,1982; Atlanta, Georgia.

37. Petru M, Sorensen S, Chaudhuri T, Shepherd A, Rosen P, O'Rourke R: Attenuation corrected equilibrium radionuclide angiography. J Nucl Med 23:83,1982. Society of Nuclear Medicine 29th Annual Meeting, June 15-18.1982; Miami Beach, Florida.

38. Petru MA, Crawford MH. Amon KW. Sorensen SG, O'Rourke RA; Comparison of 2-D echocardiography and radionuclide angiography for the evaluation of left ventricular volumes during exercise. Circulation 66:11-338,1982. American Heart Association 55th Scientific Sessions, November 15-18,1982; Dallas, Texas.
39. Morrison D, Goldman S, Henry R, Wright AL, Sorensen, SG, Caldwell J, Ritchie J: The effect of pulmonary hypertension on systolic function of the right ventricle. Chest 82:1982.

40. Anderson JL, Marshall HW, Lutz JR, Sorensen SG, Asians JC, Hagan AD: A randomized trial of intracoronary versus intravenous streptokinase in myocardial infarction. Preliminary results. J Am Coll Cardiol 3:526,1984. American College of Cardiology 33rd Annual Scientific Sessions, March 25-29, 1984; Dallas, Texas.

41. Anderson JL, Rothbard RL, Hackworthy RA, Sorensen SG, and the APSAC Co- Investigators: Randomized reperfusion trial of intravenous anisoylated plasminogen streptokinase activator complex (APSAC) vs. intracoronary streptokinase in acute myocardial infarction. Interim report. Circulation 74 (Suppl II):6 (22), 1986.

42. Gilbert EM, Sorensen SG, Laser J, Lappé D, Burke JL, et al. and the UTAH Cardiac Transplant Program, Salt Lake City, Utah:   Echocardiography as the primary means of screening cardiac donors. Circulation 74 (Suppl II):II-178 (712), 1986.

43. Hackworthy RA, Sorensen SG, Menlove RL, Anderson JL, APSAC Multicenter Investigators; ECG and enzymatic effects of streptokinase and APSAC. Reports from the Eminase Symposium held in Guernsey, November 5-6, Manchester, England. ADIS Press Limited, 1987:40.41.

44. Sorensen SG, Hackworthy RA, Fitzpatrick PG, Barry WH, Menlove RL, Anderson JL, APSAC Multicenter Investigators:  Angiographic grading of coronary artery perfusion. Reports from the Eminase Symposium held in Guersney, November 5-6,1986, Manchester, England, ADIS Press Limited, 1987:32.

45. Anderson JL, Rothbard RL, Hackworthy RA, Sorensen SG, Fitzpatrick PG, Marder VJ for the APSAC Multicenter Study Investigators: Comparison of intravenous anisoylated plasminogen streptokinase activator complex (APSAC) and intracoronary streptokinase in acute myocardial infarction. Thromb Haemostas 58:822, 1987.

46. Anderson JL, Hackworthy RA, Rothbard RL, Sorensen SG, Fitzpatrick PG, Menlove RL, Barry WH, Marder VJ: Multicenter reperfusion trial of intravenous anisoylated plasminogen streptokinase activator complex (APSAC) and intracoronary streptokinase in myocardial infarction. Final report. Circulation 76 (Suppl II):11-479, 1987.

47. Rothbard RL, Anderson JL, Hackworthy RA, Sorensen SG, Fitzpatrick PG, Marder VJ: Tolerance and complications in multicenter trial of intravenous APSAC and intracoronary streptokinase in acute myocardial infarction. Circulation 76 (Supple II): II-0714, 1987.

48. Hackworthy RA, Sorensen SO, Fitzpatrick PG. Barry WH, Menlove RL, Anderson JL, for the APSAC Investigators: Multicenter randomized study of intravenous anisoylated plasminogen streptokinase activator complex (APSAC) versus intracoronary streptokinase in myocardial infarction: Reproducibility of angiographic grading and reperfusion status. Aust NZ J Med 18(3) Suppl 2:352, 1988.

49. Hackworthy RA, Sorensen SG, Fitzpatrick PG, Menlove RL, Marder VJ, Anderson JL, for the APSAC Investigators: Multicenter randomized study of intravenous anisoylated plasminogen streptokinase activator complex (APSAC) versus intracoronary streptokinase in acute myocardial infarction: Effects on enzymatic and electrocardiographic indices. Aust NZ J Med 18 (3) Suppl 2:352, 1988.

50. Hackworthy RA, Anderson JL, Rothbard RL, Sorensen SG. Fitzpatrick PG, Menlove KL, Bany WH, Marder VJ, for the APSAC Investigators:   Multicenter randomized study of intravenous anisoylated plasminogen streptokinase activator complex (APSAC) versus intracoronary streptokinase in myocardial infarction: Dependence of reperfusion on time to treatment to initial flow grade. Aust NZ J Med 18 (3) Suppl 2:352, 1988.

51. Anderson JL, Hackworthy RA, Rothbard RL, Sorensen SG, and APSAC Multicenter Investigators: Time to thrombolytic therapy and initial flowgrade as determinants of reperfusion m myocardial infarction. Tenth Congress/European Society of Cardiology, Vienna, Austria; August 30, 1988.

52. Anastasiou-Nana MI, Nanas JN, Sorensen SG, Fowles RE, Allison SB, Anderson JL:  Validation of a new femoral venous method of endomyocardial biopsy and comparison with the internal jugular approach. Proc of the European Society for Clinical Investigation, April 19-22, 1989.

53. Anastasiou-Nana MI, Nanas, JN, Sorensen SG, Anderson JL:  Endomyocardial biopsy in heart transplant recipients compared with non-transplant recipients. Proc of the First International Symposium on Heart Failure Mechanism and Management, May 21-24,1989; Jerusalem, Israel.

54. Anderson JL, Hackworthy RA, Sorensen SG, Browne KF, Dale HT, et al, and the Team Investigators:   Comparison of intravenous anistreplase (APSAC) and streptokinase in acute myocardial infarction: Interim report of a randomized double-blind patency trial, Circulation 80:11-420 (1669), 1989.

55.  Sorensen SG, Casterella PJ, Muhlestein JB, Raleigh L, Aguilar H, McKnight KW, Ronnow BS, Thomas H, Pearson RR, Lappe DL:  Safety and efficacy of transseptal technique for percutaneous patent foramen ovale closure. TCT 2003; 1:86

56.  Sorensen SG, Casterella PJ, Muhlestein JB, Pearson RR, Horne BD, Raleigh L, Blair TL, Anderson JL, Lappe DL:  Reduced adverse event rates after transcatheter closure of patent foramen ovale (PFO) when using the Amplatzer® device compared with the CardioSEAL® device.  Journal American College of Cardiology 2004;43:377A

57.  Sorensen SG, Casterella PJ, Muhlestein JB, Gillespie M, Raleigh L, Blair TL, Li Q, Ronnow BS, Pearson RR, Jones HU, Lappe DL:  Improvement in migraine symptoms after transcutaneous closure patent foramen ovale for recurrent stroke.  Circulation 2004;110:III440

58.  Sorensen SG, Casterella PJ, Horton SC, Choucair AK, Raleight L, Augilar H, McKnight KW, Lappe DL, Thomas H, Muhlestein JB:  Procedural and late outcomes of percutaneous patent foramen ovale closure in 1000 patients:  A single center experience.  American Journal of Cardiology 2005; 96 (suppl 7):49

59.  Sorensen SG, Davis DL, Raleight L, Aguilar H, Casterella PJ, Ronnow BS, Choucair AK, Lappe DL, Thomas H, Muhlestein JB:  Migraine induction by brain micro-embolization during contrast transcranial Doppler evaluation of right-to-left shunt.  American Journal of Cardiology 2005; 96 (suppl 7):9

60.  Sorensen SG, Long JW, Horton SC, Casterella PJ, Raleigh L, Aguilar H, Lappe DL, Muhlestein JB:  Late failure of percutaneous PFO closure: Mechanisms of failure and treatment options.  American Journal of Cardiology 2005 (suppl 7):90

61.  Sorensen SG, Casterella PJ, Muhlestein JB, Raleigh L, Aguilar H, McKnight KW, Choucair AK, Ronnow BS, Gupta S, Lappe DL, :  Late adverse events after Amplatzer® closure of patent foramen ovale in 350 patients with high risk stratification for recurrent stroke.  Circulation 2005; 112 (suppl II): 615

62.  Sorensen SG, Barraclough R, Ketterer J, Turnbaugh T, May HT, Muhlestein JB.  The Effect of Normal Pulmonary Arterial Bed Bubble Contrast Conductance and Latency on Bubble Contrast Echocardiography:  Does “Any Bubbles” in the left atrium always mean Patent Foramen Ovale (PFO)? Circulation 2007; 116:11_776.

1. Principal Investigator, American Heart Association Fellowship Stipend, Washington Affiliate. "Detection of Intracardiac Thrombosis by Radionuclide Imaging," 1977-1978.

2. Principal Investigator, University of Texas Health Science Center, Institutional Grant, "Acute Adriamycin Cardiotoxicity," 1978-1979.

3. Principal Investigator, Boehringer-Ingelheim Research Funding, Southwest Division, "Myocardial Perfusion Studies by Thallium-201 and Xenon-133 Imaging During Coronary Vasodilation Induced by Dipyridamole," 1979-1980.

4. Principal Investigator, American Heart Association Grant-in-aid, Texas Affiliate, "Noninvasive Quantitation of Volume, Contractility, and Regurgitant Fraction in Chronic Valvular Insufficiency by Radionuclide Angiography," 1979-1980.

5. Principal Investigator, American Heart Association Grant-in-aid, Texas Affiliate, "Noninvasive Quantitation of Volume Overload Due to Valvular Regurgitation or Intracardiac Shunt by Gated Equilibrium Radionuclide Angiography," 1980-1981.

6. Co-principal Investigator, Audie Murphy Veterans Memorial Hospital, Veterans Administration Cooperative Study, "Prognosis and Outcome Following Heart Valve Replacement," 1979-1982.

7. Principal Investigator, Merit Review Grant, Veterans Administration, "Radionuclide Ventricular Performance Studies in Patients with Pulmonary Hypertension," 1980-1982.

8. Principal Investigator, American Heart Association Grant-in-aid, Texas Affiliate, "Hydralazine Therapy of Pulmonary Hypertension," 1981-1982.

9. Principal Investigator, American Heart Association Grant-in-aid, Utah Affiliate, "Myocardial Perfusion Studies in Man by Digital Angiography," 1984-1985.

10. Principal Investigator, LDS Hospital. START trial of intracoronary radiation for in-stent restenosis, 1999-2000.

11. Principal Investigator, LDS Hospital. SIRIUS: A multicenter Randomized Double Blind Study of the Sirolimus-Coated BX Velocity Balloon-Expandable Stent in the Treatment of Patients with De Novo Coronary Artery Lesions.

12. Principal Investigator, LDS Hospital. Beta-Cath: A Prospective, Randomized Placebo-Controlled, Triple-Masked Trial to Evaluate the Safety and Effectiveness of the Novoste Beta-Cath System in Native Coronary Arteries.

13. Principal Investigator, LDS Hospital. NSSRT: Non-surgical Septal Reduction Therapy of Hypertrophy Obstructive Cardiomyopathy with catheter delivery of desiccated alcohol.

14. Principal Investigator, LDS Hospital. PFO Closure for Stroke Prevention using the CardioSEAL Occluder. (HDE) 2001-2004

15. Principal Investigator, LDS Hospital.  PFO closure for stroke prevention using the Amplatzer PFO occluder (HDE).  2001-2004

16.  Principal Investigator; SOAR:  A prospective non-randomized device for patent foramen ovale or atrial septal defect. 

17.  Principal Investigator; START:  Stents and radiation trial

18.  Principal Investigator: XACT:  A prospective non-randomized evaluation of low risk patients undergoing carotid stenting and Angiomax (bivalrudin).

19.  Principal Investigator; ZOMAXX II:  A randomized, controlled trial to evaluate the safety and efficacy of the ZOMAXX drug-eluting coronary stent system as compared to the TAXUS Express@ paclitaxel-eluting stent in de novo coronary artery lesions.

20.  Principal Investigator; ACUITY:  A randomized comparison of Angiomax (bivalrudin) verses Lovenox (enoxaparin) in patients undergoing early invasive management for acute coronary syndromes without ST-segment evaluation.

21.  Principal Investigator:  GREAT:  Guided radiofrequency energy ablation of total occlusions using the Safe-Cross Radiofrequency total occlusion crossing system.

22. Principal Investigator, PREMIUM randomized trial of PFO closure for migraine prevention.

23. Co-Investigator, PROTECT-AF Trial WATCHMAN, Left atrial occluder in atrial fibrillation, 2005 to present.