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Affiliated Faculty

  • Ebenezer K. Hunt Professor of Radiology and Biomedical Imaging and Professor of Biomedical Engineering; Vice Chair, Bioimaging Sciences in the Department of Diagnostic Radiology; Department Chair, Biomedical Engineering

    Research Interests
    • Biomedical Engineering
    • Diagnostic Imaging
    • Magnetic Resonance Imaging
    • Radiology
    • Temporal Lobe
    James Duncan, the Ebenezer K. Hunt Professor of Biomedical Engineering, has focused his research and teaching in the areas of biomedical image processing and analysis.Duncan, who holds joint appointments in diagnostic radiology and electrical engineering, is the associate chair and director of undergraduate studies in the Department of Biomedical Engineering as well as the vice-chair for bioimaging sciences research in diagnostic radiology. He is particularly interested in the use of model-based mathematical strategies for the analysis of biomedical images. He helped pioneer the use of geometrical models for segmenting deformable (typically anatomical) objects of approximately known shape and for tracking certain forms of non-rigid object motion, and later soft tissue deformation, most notably that of the heart.Duncan and his research team performed seminal work starting in 1987 on the use of parameterized global shape models to incorporate a notion of known prior object shape into the segmentation process using a Bayesian reasoning strategy, helping lead the way towards the use of strategies for automatically finding certain known anatomical structure from any of a variety of medical (e.g. computer tomography (CT), magnetic resonance imaging (MRI), ultrasound) and biological (e.g. confocal microscopy) images. The strategies he developed have resulted in major advances in bioimaging. He and his research collaborators have applied these strategies to locate the cortical gray matter layer and a variety of co-localized subcortical gray matter structures in the brain as well as to locate the structure near the prostate gland. More recently, Duncan’s team has begun to show that these same techniques will be useful for estimating gray matter-constrained activations from functional MRI data and could help guide the recovery of quantitative biochemical information from MR spectroscopy.Beginning in the late 1980s, Duncan also pioneered using shape features on the inner and outer surfaces of the heart wall as material tags for tracking left ventricular motion. This technique was successfully applied to other non-rigid tracking problems in cell biology and became the basis for a variety of efforts internationally. Duncan and his research team used this strategy for more sophisticated analysis in echocardiography. The team’s approach is now recognized in the medical-image-analysis community as among the first to incorporate true physical models into image analysis strategies and has helped develop a more general area of physical/biomechanical model-based re covery of both structural and functional information from biomedical images. Duncan’s laboratory has also developed initial forms of these techniques to estimate brain shift during epilepsy neurosurgery and guide fractionated prostate radiotherapy, among other uses. His work has resulted in three U.S. patents.Duncan is the principal investigator of major research funded by the National Institutes of Health. Before coming to Yale in 1983, he worked for Hughes Aircraft Company. He holds a B.S.E.E. from Lafayette College, an M.S. from the University of California at Los Angeles and a Ph.D. from the University of Southern California.Duncan is a fellow of the Institute of Electrical and Electronics Engineers (IEEE) and the American Institute for Medical and Biological Engineering. He is president of the International Society for Medical Image Computing and Computer Assisted Intervention and is a member of the American Association for Artificial Intelligence and the I.E.E.E. Computer Society, among other professional organizations.
  • Robert I. White, Jr. Professor of Radiology and Biomedical Imaging; Director, Yale Hereditary Hemorrhagic Telangiectasia Program; Director, Vascular and Interventional Radiology Fellowship Program

    Research Interests
    • Arteriovenous Fistula
    • Arteriovenous Malformations
    • Carcinoma, Hepatocellular
    • Telangiectasia, Hereditary Hemorrhagic
    • Radiography, Interventional
    • Portasystemic Shunt, Transjugular Intrahepatic
    • Vascular Malformations
    • Ablation Techniques
    Dr. Pollak went to medical school at the Columbia University College of Physicians & Surgeons and subsequently did his Diagnostic Radiology residency at the Columbia-Presbyterian Medical Center. His fellowship in Vascular & Interventional Radiology was at the Hospital of the University of Pennsylvania. He then joined the Yale University School of Medicine Department of Radiology and Biomedical Imaging in the section of V&IR and served as the section chief and director of the fellowship program in this sub-specialty for over two decades. While active in all aspects of vascular & interventional radiology, his current major interests are embolotherapy (embolization), including for acquired and congenital vascular abnormalities and malformations (other than in the brain), fibroids, and malignancies, as well as other minimally invasive treatments for tumors, including local ablation. In addition, he is an expert in vascular procedures in the liver, such as intrahepatic portosystemic shunts and venous procedures, such as inferior vena cava filters. Dr. Pollak is the current director of the multidisciplinary Yale Hereditary Hemorrhagic Telangiectasia Program, which was started as the first of its kind in the world in the early 1990s. As such, he has extensive experience in the evaluation and management of patients with this genetic disorder, with particular expertise in embolization of pulmonary arteriovenous malformations, which frequently occur in this population. Dr. Pollak is also the co-director of the Yale Pulmonary Embolism Response Team, a multidisciplinary group of physicians interested in the advancement of the management of patients with this condition, especially those with more severe manifestations.
  • Assistant Professor of Radiology and Biomedical Imaging and of Pediatrics; Medical co- Director of Pediatric Interventional Radiology , Vascular & Interventional Radiology

    Research Interests
    • Biliary Tract Diseases
    • Hypertension, Pulmonary
    • Lithotripsy
    • Liver Circulation
    • Pediatrics
    • Portal System
    • Liver Transplantation
    • Lithotripsy, Laser
    • Vascular Malformations
    Dr. Schlachter is an Assistant Professor of Radiology and Biomedical Imaging at the Yale School of Medicine.Dr. Schlachter's research interests include: Liver Cancer and diseases involving the liver.Dr. Schlachter completed his surgical intern year at the University of Pennsylvania School of Medicine and his Radiology Residency from the University of Connecticut School of Medicine. After finishing his Interventional Radiology fellowship at Johns Hopkins School of Medicine in 2012, he was hired as an Attending where he focused on treating a wide range of vascular diseases including liver cancer. Dr. Schlachter is committed to working together to determine the most effective treatments for his patients.
  • Professor of Radiology and Biomedical Imaging

    Research Interests
    • Liver
    • Prostate
    • Chemicals and Drugs
    Dr. Jeffrey C. Weinreb is Director of the MRI Service at Yale-New Haven Hospital and Professor in the Department of Radiology and Biomedical Imaging at the Yale School of Medicine.  After graduating Phi Beta Kappa from the MIT, he received his MD from the Icahn School of Medicine at Mount Sinai.  He has held faculty positions at UT Southwestern Medical School, Columbia College for Physicians and Surgeons, and NYU School of Medicine, where he was Director of MRI for 15 years and led a group that pioneered the development of Body MRI.  For more than three decades, Dr. Weinreb has been an innovator in MRI. He is a leading authority on MRI contrast agents and MRI safety, and he has made seminal contributions to clinical applications of MRI in the abdomen, spine, breast, prostate, breast, vascular system, obstetrics, and gynecology. He has authored/co-authored three textbooks and more than 230 peer reviewed manuscripts, served on the editorial boards of numerous medical journals, and presented more than 1000 invited lectures throughout the world. Dr. Weinreb was the Principal Investigator for the NCI sponsored cooperative Multicenter Study of In Vivo MR Spectroscopy for the Evaluation of Prostate Cancer, and led an international effort to develop PI-RADS (Prostate Imaging Reporting and Data System) to standardize the acquisition, interpretation, and reporting of prostate MRI. In 2018 he was one of the organizers for the NIH/NIBIB workshop on clinical manifestations of gadolinium deposition. He recently helped to develop joint ACR-National Kidney Foundation consensus recommendations for the use of intravenous contrast media in patients with renal disease.  Dr. Weinreb has had numerous leadership position in professional organizations, including Vice President of the American College of Radiology, Chairman of the ACR Forum, member of the ACR Board of Chancellors, President of the New York Roentgen Society, and President of the SCBT-MR. As Chairman of the ACR Commission on Quality and Safety and Chairman of the ACR MRI Accreditation Program, Dr. Weinreb spearheaded efforts to improve the quality of medical imaging in the United States. He has received numerous awards, including the Gold Medal Awards in 2017 from the ACR and the in 2019 from the SCBT-MR (now called the SABI).