Karl Schwarz
| Title | Professor |
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| Institution | School of Medicine and Dentistry |
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| Department | Medicine |
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| Address | University of Rochester Medical Center
School of Medicine and Dentistry
601 Elmwood Ave, Box 679
Rochester NY 14642
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Dr. Schwarz is a Professor of Medicine at the University of Rochester Medical Center where he has been the director of the Echocardiography Laboratory since 1992.
Dr. Schwarz received his undergraduate degree in 1979 at Bowdoin College in Physics. Dr. Schwarz studied medicine at the University of Rochester, where he completed medical school, residency and cardiology fellowship. During his training years, he developed an interest in studying ways of improving the quality and efficiency of treating cardiovascular disease. Dr. Schwarz then joined the faculty at the University of Rochester Medical Center, where he is now Professor of Medicine. Dr. Schwarz also holds a position as a Research Professor in Electrical and Biomedical Engineering at the Rochester Institute of Technology.
At Bowdoin College, Dr. Schwarz completed his research thesis in superconducting magnetometry. During his college years at Bowdoin College, Dr. Schwarz was fortu-nate enough to work for a time at Argonne National Laboratory, where he completed a research thesis on the electromechanical properties of Nitinol; a then novel memory metal made from an alloy of nickel and titanium.
Dr. Schwarz believes that the most effective way to improve medical care is through continuous medical education and continuous monitoring of medical outcomes. These two principles lead to the development of the Pronto cardiovascular system, a robust electronic medical record system that assists healthcare providers in the data collection process by pulling codified data directly from medical devices and then automatically creating robust text reports using a dynamic phrase generator. Dr. Schwarz is also known for his basic research into the behavior of small gas bubbles in a sound field. This work supports some of the principles that are now considered fundamental to the field of contrast echocardiography. More recently, Dr. Schwarz has been studying ways to better utilize and evaluate left ventricular assist devices (VADs), prosthetic heart valves, echo contrast agents, and cardiac transplantation. Some of this work is performed in conjunction with professors at the Rochester Institute of Technology, where Dr. Schwarz holds a position as a Research Professor in Electrical and Biomedical Engineering. His newest project is an on-line school for ultrasound education with the intended audience being sonographers.
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Schwarz KQ, Parikh SS, Chen X, Farrar DJ, Steinmetz S, Ramamurthi S, Hallinan W, Massey HT, Chen L. Non-invasive flow measurement of a rotary pump ventricular assist device using quantitative contrast echocardiography. J Am Soc Echocardiogr. 2010 Mar; 23(3):324-9.
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Parikh SS, Jons C, McNitt S, Daubert JP, Schwarz KQ, Hall B. Predictive capability of left atrial size measured by CT, TEE, and TTE for recurrence of atrial fibrillation following radiofrequency catheter ablation. Pacing Clin Electrophysiol. 2010 May; 33(5):532-40.
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Tokarz SR, Aktas MK, Kroening D, Sawyer TJ, Daubert JP, Huang DT, Schwarz KQ. Identification of a retained intravascular wire by three-dimensional transesophageal echocardiography. Echocardiography. 2009 Apr; 26(4):463-4.
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Moss AJ, Zareba W, Schwarz KQ, Rosero S, McNitt S, Robinson JL. Ranolazine shortens repolarization in patients with sustained inward sodium current due to type-3 long-QT syndrome. J Cardiovasc Electrophysiol. 2008 Dec; 19(12):1289-93.
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Mieszczanska H, Kaba NK, Francis CW, Gerich JE, Dodis R, Schwarz KQ, Phipps RP, Smith BH, Lee M, Messing S, Taubman MB. Effects of pioglitazone on fasting and postprandial levels of lipid and hemostatic variables in overweight non-diabetic patients with coronary artery disease. J Thromb Haemost. 2007 May; 5(5):942-9.
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Bezante GP, Rosa GM, Bruni R, Chen X, Villa G, Scopinaro A, Balbi M, Barsotti A, Schwarz KQ. Improved assessment of left ventricular volumes and ejection fraction by contrast enhanced harmonic color Doppler echocardiography. Int J Cardiovasc Imaging. 2005 Dec; 21(6):609-16.
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Bezante GP, Chen X, Molinari G, Valbusa A, Deferrari L, Sebastiani V, Yokoyama N, Steinmetz S, Barsotti A, Schwarz KQ. Left ventricular myocardial mass determination by contrast enhanced colour Doppler compared with magnetic resonance imaging. Heart. 2005 Jan; 91(1):38-43.
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Yokoyama N, Schwarz KQ, Steinmetz SD, Li X, Chen X. Prognostic value of contrast stress echocardiography in patients with image quality too limited for traditional noncontrast harmonic echocardiography. J Am Soc Echocardiogr. 2004 Jan; 17(1):15-20.
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Yokoyama N, Schwarz KQ, Chen X, Steinmetz SD, Becher H, Schimpky C, Schlief R. The effect of echo contrast agent on Doppler velocity measurements. Ultrasound Med Biol. 2003 May; 29(5):765-70.
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Gudavalli A, Kalaria VG, Chen X, Schwarz KQ. Intrapulmonary arteriovenous shunt: diagnosis by saline contrast bubbles in the pulmonary veins. J Am Soc Echocardiogr. 2002 Sep; 15(9):1012-4.
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Schwarz KQ, Bezante GP, Chen X, Villa G, Brunelli C. Contrast harmonic color Doppler left ventriculography: machine-interpreted left ventricular ejection fraction compared with equilibrium-gated radionuclide ventriculography. J Am Soc Echocardiogr. 2000 May; 13(5):368-78.
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Kalaria VG, Schwarz KQ, Eichelberger JP, Allen M. "Vegetation plop"--auscultatory findings in large mitral valve vegetation. Clin Cardiol. 2000 Apr; 23(4):291-2.
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Holloway RG, Kantrowitz JT, St James EC, Giang D, Schwarz K. Resolution of transient ischemic attacks and aortic arch thrombi on anticoagulant therapy. Eur Neurol. 2000; 43(3):184-5.
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Chen X, Schwarz KQ, Phillips D, Steinmetz SD, Schlief R. A mathematical model for the assessment of hemodynamic parameters using quantitative contrast echocardiography. IEEE Trans Biomed Eng. 1998 Jun; 45(6):754-65.
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Schwarz KQ, Chen X, Steinmetz S. Methods for quantifying ultrasound backscatter and two-dimensional video intensity: implications for contrast-enhanced sonography. J Am Soc Echocardiogr. 1998 Feb; 11(2):155-68.
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Bauer A, Becker G, Henz P, Jachimczak P, Schwarz KQ, Haase A, Bogdahn U. Transcranial duplex ultrasound: experience with contrast enhancing agents. Int Angiol. 1997 Dec; 16(4):216-21.
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Schwarz KQ, Chen X, Steinmetz S, Phillips D. Harmonic imaging with Levovist. J Am Soc Echocardiogr. 1997 Jan-Feb; 10(1):1-10.
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Chen X, Phillips D, Schwarz KQ, Mottley JG, Parker KJ. The measurement of backscatter coefficient from a broadband pulse-echo system: a new formulation. IEEE Trans Ultrason Ferroelectr Freq Control. 1997; 44(2):515-25.
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Schwarz KQ, Bezante GP, Chen X, Phillips D, Schlief R. Hemodynamic effects of microbubble echo contrast. J Am Soc Echocardiogr. 1996 Nov-Dec; 9(6):795-804.
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Schwarz KQ, Chen X, Bezante GP, Phillips D, Schlief R. The Doppler kinetics of microbubble echo contrast. Ultrasound Med Biol. 1996; 22(4):453-62.
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Gottlieb RH, Hartley DF, Rubens DJ, Slotnik JS, Schwarz K, Robinette WB, Carson NL, Gutierrez OH. Effect of a main renal artery stenosis on the downstream Doppler waveform in dogs. Acad Radiol. 1995 Sep; 2(9):768-75.
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Schwarz KQ, Bezante GP, Chen X. When can Doppler be used in place of integrated backscatter as a measure of scattered ultrasound intensity? Ultrasound Med Biol. 1995; 21(2):231-42.
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Schwarz KQ, Becher H, Schimpfky C, Vorwerk D, Bogdahn U, Schlief R. Doppler enhancement with SH U 508A in multiple vascular regions. Radiology. 1994 Oct; 193(1):195-201.
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Roberts WA, Risher WH, Schwarz KQ. Transesophageal echocardiographic identification of persistent left superior vena cava: retrograde administration of cardioplegia during cardiac surgery. Anesthesiology. 1994 Sep; 81(3):760-2.
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Chen X, Schwarz KQ, Parker KJ. Acoustic coupling from a focused transducer to a flat plate and back to the transducer. J Acoust Soc Am. 1994 Jun; 95(6):3049-54.
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Schwarz KQ, Bezante GP, Becher H, Schimpfky C, Vorwerk D, Bogdahn U, Schlief R. Efficacy SH U 508 A (Levovist) as blood pool enhancer in the Doppler evaluation of multiple vascular regions. Radiol Med. 1994 May; 87(5 Suppl 1):3-14.
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Chen X, Schwarz KQ, Parker KJ. Radiation pattern of a focused transducer: a numerically convergent solution. J Acoust Soc Am. 1993 Nov; 94(5):2979-91.
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Eichelberger JP, Schwarz KQ, Black ER, Green RM, Ouriel K. Predictive value of dobutamine echocardiography just before noncardiac vascular surgery. Am J Cardiol. 1993 Sep 1; 72(7):602-7.
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Culver DL, Bezante GP, Schwarz KQ, Meltzer RS. Transesophageal echocardiography in the diagnosis of acquired aneurysms of the left atrial appendage. Clin Cardiol. 1993 Feb; 16(2):149-51.
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Schwarz KQ, Bezante GP, Chen X, Mottley JG, Schlief R. Volumetric arterial flow quantification using echo contrast. An in vitro comparison of three ultrasonic intensity methods: radio frequency, video and Doppler. Ultrasound Med Biol. 1993; 19(6):447-60.
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Schwarz KQ, Bezante GP, Chen X, Schlief R. Quantitative echo contrast concentration measurement by Doppler sonography. Ultrasound Med Biol. 1993; 19(4):289-97.
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Schwarz KQ, Church CC, Serrino P, Meltzer RS. The acoustic filter: an ultrasonic blood filter for the heart-lung machine. J Thorac Cardiovasc Surg. 1992 Dec; 104(6):1647-53.
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Francis CW, Onundarson PT, Carstensen EL, Blinc A, Meltzer RS, Schwarz K, Marder VJ. Enhancement of fibrinolysis in vitro by ultrasound. J Clin Invest. 1992 Nov; 90(5):2063-8.
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Carstensen EL, Duck FA, Meltzer RS, Schwarz KQ, Keller B. Bioeffects in echocardiography. Echocardiography. 1992 Nov; 9(6):605-23.
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Meltzer RS, Schwarz KQ, Mottley JG, Everbach EC. Therapeutic cardiac ultrasound. Am J Cardiol. 1991 Feb 15; 67(5):422-4.
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Reisner SA, Lichtenberg GS, Shapiro JR, Schwarz KQ, Meltzer RS. Exercise Doppler echocardiography in patients with mitral prosthetic valves. Am Heart J. 1989 Oct; 118(4):755-9.
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Schwarz KQ, Meltzer RS. Experience rounding with a hand-held two-dimensional cardiac ultrasound device. Am J Cardiol. 1988 Jul 1; 62(1):157-9.
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