Transesophageal Echocardiogram
Guliz Kozdag Gold
Theodore N. Keltz
Dr. Keltz is interested in the full breadth of clinical cardiology in adolescents and adults, from risk factor assessment and treatment, to the care of symptoms and diseases. He brings a special expertise in the integration of bedside care with noninvasive imaging.
<p>Dr. Keltz received his BS with honors in Biology, magna cum laude, and his MD in the accelerated 6 year Biomedical Program at Rensselaer Polytechnic Institute and Albany Medical College of Union University. He was inducted into Alpha Omega Alpha, the medical school honor society, in the autumn of his junior year in medical school.</p><p>Dr. Keltz did an internship and residency in Internal Medicine at Mt Sinai Hospital and a fellowship in Cardiovascular Disease at Montefiore Medical Center. He then joined the late Drs. Julian Frieden, Jerome Cooper, and. Bernard Gitler in cardiology practice in New Rochelle. The practice became Westchester Heart Specialists and included Dr. Michael Johnson and Dr. Donald Miller. He cared for patients at New Rochelle Hospital, Montefiore Medical Center, and Columbia University Medical Center. In 2012 Westchester Heart Specialists became a part of Montefiore Medical Center.</p><p>Dr. Keltz was awarded the the Elmer Schacht Award for Microbiology in medical school and the Montefiore Medical Center House Staff Award for Excellence in Teaching and Patient Care in 1987.</p><p>Dr. Keltz is Board Certified in Internal Medicine, Cardiovascular Disease, Nuclear Cardiology, and Adult Echocardiography.</p><p>Dr. Keltz served on the Board of Directors, American Heart Association, Westchester-Putnam Region from 1995-2007 and as president from 2000-2006.</p><p>Dr. Keltz is currently the President of the Medical Board of Montefiore New Rochelle Hospital.</p>
Tamara Gomez Kalhan
<p>Tamara Kalhan, MD, FAAP, is Medical Director, Low Birthweight Evaluation and Assessment Program (LEAP) Clinic and Director, Neonatal Education, Wakefield Division at the Children’s Hospital at Montefiore Einstein and Course Director, Medicine Electives in Neonatology and Assistant Professor, Pediatrics at our Albert Einstein College of Medicine. Her clinical focus is on neonatal outcomes for premature infants, low birth weight infants and infants requiring extended Neonatal Intensive Care Unit (NICU) hospitalizations.</p><p>Dr. Kalhan earned her Doctor of Medicine in 2009 at the University of Texas Health Science Center at San Antonio School of Medicine. She completed her pediatric residency in 2012 at St. Louis Children’s Hospital, followed by a fellowship in neonatal-perinatal medicine at Columbia University, where she was Chief Fellow in her final year of training in 2015.</p><p>Dr. Kalhan’s research interests and expertise include improving follow-up care and neonatal outcomes in high-risk infant populations, with an emphasis on early detection of cerebral palsy. She has been co-investigator on research projects and has shared her work through peer-reviewed journals, book chapters, review articles and case reports, abstracts, platform presentations and poster presentations.</p><p>Dr. Kalhan is board certified in General Pediatrics and Neonatal-Perinatal Medicine. She is a member of the American Academy of Pediatrics.</p>
Edwin C.W. Ho
Dr. Hos' clinical focus is on valvular heart disease, especially novel transcatheter valve repair and replacement technologies.
Following his clinical interests, Dr. Ho’s research focuses on valvular heart disease and advanced cardiac imaging. His research has been published in reviewed journals, and he has been invited to present and participate as faculty at several international cardiology and valve meetings.
<p>Edwin Ho, MD, is Co-Director of the Heart Valve/Structural Heart Center at Montefiore. His clinical focus is on valvular heart disease, especially novel transcatheter valve repair and replacement technologies.</p><p>In 2010, Dr. Ho received his Doctor of Medicine from the University of Toronto in Toronto, Ontario. He continued at the institution for his postdoctoral training with a three-year residency in general internal medicine from 2010 to 2013, followed by a three-year residency in adult cardiology, which he completed in 2016. He then pursued a clinical fellowship in echocardiography, interventional echocardiography and valvular heart disease at St. Michael’s Hospital in Toronto. After completing this in 2017, he continued his postdoctoral training at the University Hospital of Zurich in Switzerland, completing a clinical fellowship in interventional echocardiography and valvular heart disease in 2017 to 2019.</p><p>Following his clinical interests, Dr. Ho’s research focuses on valvular heart disease and advanced cardiac imaging. His research has been published in reviewed journals, and he has been invited to present and participate as faculty at several international cardiology and valve meetings. He has been an invited manuscript reviewer for <em>Circulation: Cardiovascular Imaging</em> and <em>Cardiovascular Medicine</em>.</p>
Mario J. Garcia
<p>Dr. Mario J. Garcia is an eminent cardiologist and leader in the development and clinical implementation of the most advanced noninvasive cardiac diagnostic technology used around the world today. A physician, researcher and educator, he is known worldwide for his innovative use of noninvasive cardiac imaging in the clinic, such as coronary CT angiography (including some of the earliest studies testing radiation-reduction strategies), echocardiography, and MRI.</p>
<p>Dr. Garcia’s research focuses on why patients with diastolic heart failure have trouble doing physical exercise and the role of screening imaging tests for predicting cardiovascular events such as heart attacks. His cardiac imaging work has contributed significantly to the diagnosis and treatment of coronary artery disease, diastolic heart failure, cardiomyopathies and valvular heart disease. The CT coronary angiography technique avoids the use of invasive arterial catheterization to image the coronary arteries, using instead a modified CT scanner to detect even the smallest atherosclerotic plaques that can cause narrowing of the coronary vessels and lead to deadly heart attacks. Dr. Garcia tested the technology in animal and controlled human studies, which led to increased accuracy and lowered the use of radiation, both of which improved clinical effectiveness. In addition, his research findings have helped to improve the safety of manned space flights and the quality of battlefield medicine.</p>
<p>Dr. Garcia joined Einstein/Montefiore as Chief of the Division of Cardiology in 2010. He holds the Pauline Levitt Endowed Chair in Medicine at Albert Einstein College of Medicine, and is Professor of Radiology and Co-Director (with Dr. Robert Michler) of the Montefiore-Einstein Center for Heart and Vascular Care. As co-director of the Center, Dr. Garcia has focused his attention on the cardiac health of lower income people living in urban areas such as the Bronx, where obesity, diabetes and other heart disease risk factors are common.</p>
<p>Dr. Garcia was born in Argentina and moved to the Dominican Republic when he was four years old. He attended Universidad Nacional Pedro Henriquez Urena in Santo Domingo, where he earned both his bachelor’s degree in premedical sciences and his doctorate in medicine, completing his formal education in 1986, when he moved to the United States to train as an internal medicine resident and then a cardiology fellow at St. Vincent’s Medical Center in Bridgeport, Connecticut. He then pursued additional training at Massachusetts General Hospital in Cardiac Nuclear Imaging and at the Cleveland Clinic in Advanced Cardiac Imaging.</p>
<p>After two years as an Assistant Professor at Dartmouth, Dr. Garcia was recruited to the Cleveland Clinic by Dr. Eric Topol (Scripps Research Institute, La Jolla, CA). He was initially a staff cardiologist, but became Director of Echocardiography in 2000, a position he held for the next five years. Under his tenure, the echocardiography program doubled in size to become the second largest program in the United States (behind the Mayo Clinic). Dr. Garcia was actively involved in recruiting new physicians to the program and managing the program’s budget. He also became involved in several entrepreneurial ventures, and brought CT angiography to the Cleveland Clinic. In 2005, he was named Director of Cardiovascular Imaging, leading the Cleveland Clinic to the top of cardiovascular imaging in the country at the time. In 2006, he was recruited to Mount Sinai as Professor of Medicine and Radiology and Director of the Cardiovascular Imaging Center, where he worked with Dr. Valentin Fuster. There, he once again led a successful expansion, developing a strong collaborative relationship with the Department of Radiology, a critical factor in his success.</p>
<p>Academically, Dr. Garcia is an active member of the Boards of Directors of the American Society of Nuclear Cardiology, of the Society of Cardiovascular Computed Tomography, and of the Intersocietal Accreditation Council, and he is a past member of the Board of the American Society of Echocardiography. He is a member of the American Heart Association, Circulation Council; a member of the Editorial Board, JACC-Imaging; the Associate Editor, American Heart Association on-line; the Editor of theheart.org Imaging section and the Editor in Chief of theheart.org (Spanish edition); a board member of the American Board of Internal Medicine (ABIM); and serves on the American College of Cardiology's ACCF Task Force on Clinical Expert Consensus Documents. He is the winner of the Feigenbaum Award of the American Society of Echocardiography (2004); the Inge Edler Award, Madrid, Spain (2001); the Teaching Attending of the year award, Cleveland Clinic Foundation (1998); the David H. Jacobs Research Award of the American Heart Association, Northeast Ohio Affiliate (1997); and the Facultad Universitaria Dominicana Year Award.<br />Dr. Garcia is the author or co-author of numerous books, including the very recent single-author definitive text, NonInvasive Cardiovascular Imaging: A Multimodality Approach (Garcia, MJ, Lippincott Williams & Wilkins, 2010). He has also written multiple book chapters and over 160 papers on many aspects of cardiac imaging.</p>
<p>Dr. Garcia's work has been supported by extramural funding from the National Space Biomedical Research Institute (NSBRI), the National Aeronautics and Space Administration (NASA), the Department of Defense (DOD), the American Society of Echocardiography, the NIH, the American Heart Association, and SmithKline Beecham Pharmaceuticals.</p>
<p class="MsoNormal" style="line-height: 15.6pt;"><span style="font-size: 9pt; font-family: Arial, sans-serif; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;">Dr. Garcia is a physician, researcher and educator known for his innovative use of noninvasive cardiac imaging in the clinic, including CT angiography, echocardiography and MRI. His research focuses on why patients with diastolic heart failure have trouble doing physical exercise and the role of screening imaging tests for predicting cardiovascular events such as heart attacks. <span> </span></span><span style="font-size: 9.0pt; font-family: "Arial","sans-serif";"><br /> <br /> <span style="background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;">Dr. Garcia’s cardiac imaging work has contributed significantly to the diagnosis and treatment of coronary artery disease, diastolic heart failure, cardiomyopathies and valvular heart disease. In addition, his research findings have helped to improve the safety of manned space flights and the quality of battlefield medicine. As co-director of the Montefiore Einstein Center for Heart and Vascular Care, he has focused his attention on the cardiac health of lower income people living in urban areas such as the Bronx, where obesity, diabetes and other heart disease risk factors are common.</span></span></p>
Diagnosis and treatment of valvular heart disease, cardiomyopathies and pericardial disease.
Validation of non-invasive imaging for the study of cardiac structure and function.
<ol>
<li>Prasad A, Hastings JL, Shibata S, Popovic ZB, Arbab-Zadeh A, Bhella PS, Okazaki K, Fu Q, Berk M, Palmer D, Greenberg NL, Garcia MJ, Thomas JD, Levine BD. Characterization of static and dynamic left ventricular diastolic function in patients with heart failure with a preserved ejection fraction. Circulation. Heart failure. 2010;3:617-626</li>
<li>Fernandez-Friera L, Garcia-Alvarez A, Bagheriannejad-Esfahani F, Malick W, Mirelis JG, Sawit ST, Fuster V, Sanz J, Garcia MJ, Hermann LK. Diagnostic value of coronary artery calcium scoring in low-intermediate risk patients evaluated in the emergency department for acute coronary syndrome. The American journal of cardiology. 2011;107:17-23</li>
<li>Romero J, Xue X, Gonzalez W, Garcia MJ. CMR imaging assessing viability in patients with chronic ventricular dysfunction due to coronary artery disease: A meta-analysis of prospective trials. JACC. Cardiovascular imaging. 2012;5:494-508</li>
<li>Spevack DM, Karl J, Yedlapati N, Goldberg Y, Garcia MJ. Echocardiographic left ventricular end-diastolic pressure volume loop estimate predicts survival in congestive heart failure. Journal of cardiac failure. 2013;19:251-259.</li>
<li>Baber U, Mehran R, Sartori S, Schoos MM, Sillesen H, Muntendam P, Garcia MJ, Gregson J, Pocock S, Falk E and Fuster V. Prevalence, impact, and predictive value of detecting subclinical coronary and carotid atherosclerosis in asymptomatic adults: the BioImage study. Journal of the American College of Cardiology. 2015;65:1065-74.</li>
</ol>
<p>Mario Jorge Garcia, MD, is Chief, Cardiology, Co-Director, Montefiore Einstein Center for Heart and Vascular Care and Professor, Medicine and Radiology at Montefiore Einstein. Dr. Garcia’s clinical expertise includes the diagnosis and treatment of valvular heart disease, cardiomyopathies and pericardial disease.</p><p>After completing his Bachelor in Premedical Sciences at Universidad Nacional Pedro Henriquez Ureña, Santo Domingo, Dominican Republic, Dr. Garcia continued at the institution to earn his Doctorate in Medicine in 1986. He completed a year as a physician assistant with the AIDS national research program at Laboratorio Nacional Dr. Defilló, Santo Domingo, Dominican Republic before coming to the United States for further training. At St. Vincent’s Medical Center, he completed his internal medicine residency in 1990 and his cardiology fellowship in 1992. In 1993, he completed his cardiac nuclear imaging fellowship at Massachusests General Hospital and Spaulding Rehabilitation Hospital, followed in 1994 by his advanced cardiac imaging fellowship at Cleveland Clinic Foundation.</p><p>Dr. Garcia’s research has focused on the validation of non-invasive imaging for the study of cardiac structure and function. He was a pioneer in the adaptation of multi-detector CT technology for coronary imaging. His research has been supported by extramural funding from the National Space Biomedical Research Institute, the National Aeronautics and Space Administration (NASA), the Department of Defense, the American Society of Echocardiography, the National Heart, Lung, and Blood Institute and the American Heart Association. He is the author or co-author of several books, book chapters and over 250 publications in peer-reviewed journals. He is also a reviewer for several national and international medical journals including <em>Journal of the American College of Cardiology, American Journal of Cardiology</em> and <em>Journal of the European Society of Cardiology.</em></p><p>Dr. Garcia is a Fellow of the American College of Cardiology and the American College of Physicians, and is a member of several other professional societies. He has received recognition nationally and internationally for his many accomplishments, including the Feigenbaum Award of the American Society of Echocardiography (2004), the Inge Edler Award, Madrid, Spain (2001), and the David H. Jacobs Research Award of the American Heart Association, Northeast Ohio Affiliate (1997).</p>
Benjamin T. Galen
<p>Dr. Galen graduated from Brown University with honors in the biological sciences and earned an M.D. from Tufts University School of Medicine. He trained in internal medicine at Yale University where he was elected to the Gold Humanism Honor Society and was the class speaker at residency graduation. He joined Montefiore and Einstein in 2013 as a teaching attending in Hospital Medicine</p>
<p>Dr. Galen is an Associate Program Director in The Einstein/Montefiore Internal Medicine Residency Program, the Director of Firm 3 and the Director of ultrasound and procedure training. In 2015 Dr. Galen received the Sharon R. Silbiger Faculty Teaching Award from the Einstein residents. He has led hundreds of resident teaching conferences and has worked to formalize curricula for point-of-care ultrasound (POCUS) and bedside procedures, such as lumbar puncture and paracentesis. Dr. Galen has taught in the EPHEM, Microbiology, and PDC classes at Einstein. He has led translational research on recurrent meningitis, collaborting with members of Betsy Herold's laboratory. He has co-authored over 20 original research studies. Dr. Galen is passionate about medical case reports and he has mentored residents and junior faculty in the process of publishing cases in a variety of venues. </p>
<p>Dr. Galen is the editor-in-chief of <em>POCUS Journal (</em><a href="https://pocusjournal.com/">https://pocusjournal.com/)</a>, the world's leading peer-reviewed, open-access publication for point-of-care ultrasound. He teaches POCUS nationally at a variety of workshops and conferences. </p>
<ol>
<li>Shankar, N., Kuo, L., Krugliak Cleveland, N., Galen, B., Samel, N. S., Perez-Sanchez, A., Nathanson, R., Coss, E., Echavarria, J., Rubin, D. T., & Soni, N. J. (2025). Point-of-Care Ultrasound in Gastroenterology and Hepatology. <em>Clin Gastroenterol Hepatol</em>. <a href="https://doi.org/10.1016/j.cgh.2024.09.040" target="_blank" rel="noopener noreferrer">https://doi.org/10.1016/j.cgh.2024.09.040</a></li>
<li>Cool, J. A., Galen, B. T., & Dancel, R. (2025). Point-counterpoint: Should hospitalists perform their own bedside procedures? <em>J Hosp Med</em>,<em> 20</em>(1), 89-93. <a href="https://doi.org/10.1002/jhm.13545" target="_blank" rel="noopener noreferrer">https://doi.org/10.1002/jhm.13545</a></li>
<li>Schechter, M. S., Baron, S. W., Gohari, A., Southern, W. N., & Galen, B. T. (2024). Midline Catheter-Associated Thrombosis (MCAT): Does Tip Location in the Axillary Vein Increase Risk? <em>J Infus Nurs</em>,<em> 47</em>(6), 363-368. <a href="https://doi.org/10.1097/nan.0000000000000558" target="_blank" rel="noopener noreferrer">https://doi.org/10.1097/nan.0000000000000558</a></li>
<li>Singh, J., Oliver-Krasinski, J., Tauras, J., & Galen, B. T. (2023). Systemic Amyloidosis: Is It ATTR or AL? <em>Am J Med</em>,<em> 136</em>(7), 652-654. <a href="https://doi.org/10.1016/j.amjmed.2023.03.009" target="_blank" rel="noopener noreferrer">https://doi.org/10.1016/j.amjmed.2023.03.009</a></li>
<li>Johri, A. M., Glass, C., Hill, B., Jensen, T., Puentes, W., Olusanya, O., Capizzano, J. N., Dancel, R., Reierson, K., Reisinger, N., Liblik, K., & Galen, B. T. (2023). The Evolution of Cardiovascular Ultrasound: A Review of Cardiac Point-of-Care Ultrasound (POCUS) Across Specialties. <em>Am J Med</em>,<em> 136</em>(7), 621-628. <a href="https://doi.org/10.1016/j.amjmed.2023.02.020" target="_blank" rel="noopener noreferrer">https://doi.org/10.1016/j.amjmed.2023.02.020</a></li>
<li>Eman, G., Synn, S., Galen, B., Shah, R., Nauka, P., Hope, A. A., Congdon, S., & Islam, M. (2023). Thoracic Ultrasound in COVID-19: Use of Lung and Diaphragm Ultrasound in Evaluating Dyspnea in Survivors of Acute Respiratory Distress Syndrome from COVID-19 Pneumonia in a Post-ICU Clinic. <em>Lung</em>,<em> 201</em>(2), 149-157. <a href="https://doi.org/10.1007/s00408-023-00614-w" target="_blank" rel="noopener noreferrer">https://doi.org/10.1007/s00408-023-00614-w</a></li>
<li>Nauka, P. C., LeFrancois, D., & Galen, B. T. (2022). An Introductory Curriculum for Internal Medicine Interns in Point-of-Care Ultrasound to Detect Lower Extremity Deep Vein Thrombosis. <em>Pocus j</em>,<em> 7</em>(2), 185-186. <a href="https://doi.org/10.24908/pocus.v7i2.15937" target="_blank" rel="noopener noreferrer">https://doi.org/10.24908/pocus.v7i2.15937</a></li>
<li>Varrias, D., Palaiodimos, L., Balasubramanian, P., Barrera, C. A., Nauka, P., Melainis, A. A., Zamora, C., Zavras, P., Napolitano, M., Gulani, P., Ntaios, G., Faillace, R. T., & Galen, B. (2021). The Use of Point-of-Care Ultrasound (POCUS) in the Diagnosis of Deep Vein Thrombosis. <em>J Clin Med</em>,<em> 10</em>(17). <a href="https://doi.org/10.3390/jcm10173903" target="_blank" rel="noopener noreferrer">https://doi.org/10.3390/jcm10173903</a></li>
<li>Shah, R., Zhang, L., & Galen, B. T. (2021). A 73-Year-Old Woman With Pulseless Electrical Activity Arrest. <em>Chest</em>,<em> 160</em>(6), e665-e667. <a href="https://doi.org/10.1016/j.chest.2021.03.075" target="_blank" rel="noopener noreferrer">https://doi.org/10.1016/j.chest.2021.03.075</a></li>
<li>Koleilat, I., Galen, B., Choinski, K., Hatch, A. N., Jones, D. B., Billett, H., Indes, J., & Lipsitz, E. (2021). Clinical characteristics of acute lower extremity deep venous thrombosis diagnosed by duplex in patients hospitalized for coronavirus disease 2019. <em>J Vasc Surg Venous Lymphat Disord</em>,<em> 9</em>(1), 36-46. <a href="https://doi.org/10.1016/j.jvsv.2020.06.012" target="_blank" rel="noopener noreferrer">https://doi.org/10.1016/j.jvsv.2020.06.012</a></li>
<li>Nauka, P. C., & Galen, B. T. (2020). The Focused Assessment with Sonography in Cancer (FASC) Examination. <em>Pocus j</em>,<em> 5</em>(2), 42-45. <a href="https://doi.org/10.24908/pocus.v5i2.14428" target="_blank" rel="noopener noreferrer">https://doi.org/10.24908/pocus.v5i2.14428</a></li>
<li>Merkin, R., Kruger, A., Bhardwaj, G., Kajita, G. R., Shapiro, L., & Galen, B. T. (2020). Internal Medicine Resident Work Absence During the COVID-19 Pandemic at a Large Academic Medical Center in New York City. <em>J Grad Med Educ</em>,<em> 12</em>(6), 682-685. <a href="https://doi.org/10.4300/jgme-d-20-00657.1" target="_blank" rel="noopener noreferrer">https://doi.org/10.4300/jgme-d-20-00657.1</a></li>
</ol>
Sameen Farooq
<p>Dr. Farooq is board certified in Internal Medicine, Addiction Medicine, Palliative and Hospice Medicine and Obesity Medicine. He works as a direct care Internal Medicine hospitalist at Moses campus.</p>
Jillian M. Connors
<p>Jillian Connors, MD, FAAP, is a neonatologist and Assistant Professor, Pediatrics at Montefiore Einstein. Dr. Connors is a neonatal-perinatal medicine specialist, and in her clinical role, she cares for critically ill and preterm infants with a wide variety of acute and chronic healthcare needs.</p><p>After obtaining her Bachelor of Science in biology from Canisius College in 2007, Dr. Connors earned her Doctor of Medicine at the State University of New York at Buffalo in 2011. She then attended the Icahn School of Medicine at Mount Sinai, where she completed her pediatric internship and residency in 2014 and became Chief Resident until 2015. Dr. Connors also completed a neonatal-perinatal fellowship at this institution in 2018.</p><p>Building on her clinical focus, Dr. Connors’ research focuses on quality improvement, simulation, neonatal nutrition and breastfeeding. Her work has been published in numerous peer-reviewed journals and abstracts.</p><p>Dr. Connors is board certified by the American Board of Pediatrics in General Pediatrics and Neonatal-Perinatal Medicine. She is a member of the American Academy of Pediatrics and the International Pediatric Simulation Society.</p>
Kwang J. Chun
<p>Nuclear medicine, diagnostic and therapeutic fields for pediatric, adolescent and adult population</p>
<p>Osteoporosis for strong bones, diagnosis and early intervention</p>
<p>Kwang J. Chun, MD, is an Attending Physician in the Department of Radiology and Division of Nuclear Medicine at Montefiore and an Associate Professor of Radiology at Albert Einstein College of Medicine. She has extensive expertise in the application of nuclear medicine methodologies. Her research and clinical practice focus on improving therapeutic and diagnostic outcomes. </p><p>Chun has authored and coauthored numerous publications and review articles in nuclear medicine journals. Her recent research focuses on bone health, for osteoporosis and osteoarthritis early intervention, and gastroenterology. </p><p>Dr. Chun attended Seoul National University, graduating as Doctor of Medicine from the College of Medicine in 1968. She subsequently completed her residency and served as Chief Resident at Seoul National University Hospital's Internal Medicine Department. Between 1972 and 1977, she completed her internship, residency and fellowship at Brooklyn Medical Center, Mount Sinai Hospital, St. Luke’s Hospital Center's Nuclear Medicine Department, and Albert Einstein College of Medicine's Nuclear Medicine Department. She has served as an Attending Physician with teaching responsibilities at Montefiore and the Hospital for Albert Einstein College of Medicine since 1977. </p><p>Dr. Chun is board certified by the American Board of Nuclear Medicine. </p>