Val M. Runge | |
---|---|
Born | |
Nationality | American |
Alma mater | Stanford University, Stanford University School of Medicine, Vanderbilt University Medical Center, University of Bern |
Scientific career | |
Fields | Radiology |
Institutions | University of Bern |
Val Murray Runge (born August 28, 1956, in Austin, Texas) is an American and Swiss professor of radiology and the editor-in-chief of Investigative Radiology . [1] Runge was one of the early researchers to investigate the use of gadolinium-based contrast agents for magnetic resonance imaging (MRI), [2] giving the first presentation in this field (in 1982), [3] followed two years later by the first presentation of efficacy (in 1984). [4] His research also pioneered many early innovations in MRI, including the use of tilted planes (for standardization of brain imaging, in 1987) and respiratory gating (for liver imaging, in 1984). [5] [6] His publication on multiple sclerosis in 1984 represented the third and largest clinical series (to that date) investigating the role of MRI in this disease, and the first to show characteristic abnormalities on MRI in patients whose CT was negative. [7]
Runge was born in Austin, Texas and graduated from Stanford University with a Bachelor of Science, with honors, in Chemistry in June 1978. He subsequently received his MD from Stanford University School of Medicine in January 1982. Following completion of a diagnostic radiology residency at Vanderbilt University Medical Center in December 1985, Runge was appointed as assistant professor and chief of service of magnetic resonance at Tufts University School of Medicine in 1986. He was promoted to associate professor in 1988. In 1990 he was appointed professor of diagnostic radiology and biomedical engineering, Director of the Magnetic Resonance Imaging and Spectroscopy Center, and the Rosenbaum Endowed Chair of Diagnostic Radiology, at the University of Kentucky Medical Center. In 2002, Runge was appointed the Robert and Alma Moreton Centennial Chair in Radiology, Scott & White Memorial Hospital, and professor of radiology at the Texas A&M Health Science Center. In 2010 he was appointed the John Sealy Distinguished Chair and professor of radiology at the University of Texas Medical Branch in Galveston. In 2011, he received an additional honorary appointment as visiting professor, for 2012–2015, from Tongji Medical College, Wuhan, Central China. Runge then spent two years in Zurich, Switzerland as a visiting professor at the University Hospital of Zürich (2013-2015). Runge lives currently in Zurich, Switzerland, having a long-term appointment (2015-present) as a member of the faculty at Inselspital, Universitätsspital Bern. He received the title of Prof. Dr. med. from the University of Bern in 2019.
Runge is an early pioneer in MRI, known for his work in 1982-1984 demonstrating for the first time the potential as well as early diagnostic utility of intravenous contrast media in MRI, specifically the gadolinium chelates. [5] [8] [9] [10]
He is an author of more than 230 peer-reviewed papers published in the scientific literature. He is also the editor for twenty-one medical textbooks, [11] [12] [13] [14] [15] [16] [17] with several of these translated into other languages, including German, [18] [19] Chinese, Polish and Turkish. His most recent textbooks are "Neuroradiology - the Essentials with MR and CT", second edition, [20] "Imaging of Cerebrovascular Disease", [21] "The Physics of Clinical MR Taught Through Images", fifth edition (2022), [22] and the second edition of "Essentials of Clinical MR". [23] He has given more than 800 scientific and invited presentations at national and international meetings and medical schools across North America, Europe, Australia, Japan, Korea and China over the past 43 years.
Runge holds a U.S. patent (#4615879), together with Jeffrey A. Clanton, for oral particulate NMR contrast agents. [24]
Since 1994, Runge has been editor-in-chief of Investigative Radiology (2023 Impact Factor of 7). He was also a member of the editorial boards of the Journal of Magnetic Resonance Imaging and Topics in Magnetic Resonance Imaging since their respective inceptions, in 1991 and 1988, and remained on these two editorial boards until the early 2020s. He remains active in research and development of MRI contrast agents and advanced MRI imaging techniques. In 2019, under his guidance, the first study demonstrating the toxicity of gadolinium chelates to brain tissue was published. [25] This identifies a pathway by which linear gadolinium chelates may produce ill effects in otherwise normal patients long after injection, supporting the EMA's decision in 2017 to withdraw certain, and restrict other, agents in this category from clinical use.
He was elected Fellow of the International Society for Magnetic Resonance in Medicine in 1990. In 2011, Runge received the Harry Fisher Medal for Excellence in Contrast Media Research from the Contrast Media Research Society. [26]
Other academic honors include the Executive Council Award from the American Roentgen Ray Society (for research in MRI and multiple sclerosis), [27] the Dyke Memorial Award from the American Society of Neuroradiology (for MR contrast media research), [28] and a Magna Cum Laude Award (for the best scientific exhibit) from the Radiological Society of North America. [29] He is a diplomate of the American Board of Radiology (1986).
Runge has two daughters and currently resides in Zurich, Switzerland.
Gadolinium is a chemical element; it has symbol Gd and atomic number 64. Gadolinium is a silvery-white metal when oxidation is removed. It is a malleable and ductile rare-earth element. Gadolinium reacts with atmospheric oxygen or moisture slowly to form a black coating. Gadolinium below its Curie point of 20 °C (68 °F) is ferromagnetic, with an attraction to a magnetic field higher than that of nickel. Above this temperature it is the most paramagnetic element. It is found in nature only in an oxidized form. When separated, it usually has impurities of the other rare earths because of their similar chemical properties.
Magnetic resonance imaging (MRI) is a medical imaging technique used in radiology to form pictures of the anatomy and the physiological processes inside the body. MRI scanners use strong magnetic fields, magnetic field gradients, and radio waves to generate images of the organs in the body. MRI does not involve X-rays or the use of ionizing radiation, which distinguishes it from computed tomography (CT) and positron emission tomography (PET) scans. MRI is a medical application of nuclear magnetic resonance (NMR) which can also be used for imaging in other NMR applications, such as NMR spectroscopy.
Radiology is the medical specialty that uses medical imaging to diagnose diseases and guide their treatment, within the bodies of humans and other animals. It began with radiography, but today it includes all imaging modalities, including those that use no ionizing electromagnetic radiation, as well as others that do, such as computed tomography (CT), fluoroscopy, and nuclear medicine including positron emission tomography (PET). Interventional radiology is the performance of usually minimally invasive medical procedures with the guidance of imaging technologies such as those mentioned above.
A contrast agent is a substance used to increase the contrast of structures or fluids within the body in medical imaging. Contrast agents absorb or alter external electromagnetism or ultrasound, which is different from radiopharmaceuticals, which emit radiation themselves. In X-ray imaging, contrast agents enhance the radiodensity in a target tissue or structure. In magnetic resonance imaging (MRI), contrast agents shorten the relaxation times of nuclei within body tissues in order to alter the contrast in the image.
Gadopentetic acid, sold under the brand name Magnevist, is a gadolinium-based MRI contrast agent.
Gadolinium(III) oxide (archaically gadolinia) is an inorganic compound with the formula Gd2O3. It is one of the most commonly available forms of the rare-earth element gadolinium, derivatives, of which are potential contrast agents for magnetic resonance imaging.
One alternative to mammography, breast MRI or contrast-enhanced magnetic resonance imaging (MRI), has shown substantial progress in the detection of breast cancer.
Gadodiamide, sold under the brand name Omniscan, is a gadolinium-based MRI contrast agent (GBCA), used in magnetic resonance imaging (MRI) procedures to assist in the visualization of blood vessels.
Nephrogenic systemic fibrosis is a rare syndrome that involves fibrosis of the skin, joints, eyes, and internal organs. NSF is caused by exposure to gadolinium in gadolinium-based MRI contrast agents (GBCAs) in patients with impaired kidney function. Epidemiological studies suggest that the incidence of NSF is unrelated to gender or ethnicity and it is not thought to have a genetic basis. After GBCAs were identified as a cause of the disorder in 2006, and screening and prevention measures put in place, it is now considered rare.
MRI contrast agents are contrast agents used to improve the visibility of internal body structures in magnetic resonance imaging (MRI). The most commonly used compounds for contrast enhancement are gadolinium-based contrast agents (GBCAs). Such MRI contrast agents shorten the relaxation times of nuclei within body tissues following oral or intravenous administration.
Cardiac magnetic resonance imaging, also known as cardiovascular MRI, is a magnetic resonance imaging (MRI) technology used for non-invasive assessment of the function and structure of the cardiovascular system. Conditions in which it is performed include congenital heart disease, cardiomyopathies and valvular heart disease, diseases of the aorta such as dissection, aneurysm and coarctation, coronary heart disease. It can also be used to look at pulmonary veins.
Gadoteric acid, sold under the brand name Dotarem among others, is a macrocycle-structured gadolinium-based MRI contrast agent (GBCA). It consists of the organic acid DOTA as a chelating agent, and gadolinium (Gd3+), and is used in form of the meglumine salt (gadoterate meglumine). The paramagnetic property of gadoteric acid reduces the T1 relaxation time (and to some extent the T2 and T2* relaxation times) in MRI, which is the source of its clinical utility. Because it has magnetic properties, gadoteric acid develops a magnetic moment when put under a magnetic field, which increases the signal intensity (brightness) of tissues during MRI imaging.
Burton Drayer, MD, FACR, FANN, is an American radiologist and nationally recognized authority on the use of computed tomography and magnetic resonance imaging for diagnosing neurological disorders. From 2003 to 2008, he served as president, The Mount Sinai Hospital. As of 2020, he is the Charles M. and Marilyn Newman Professor and System Chair, Radiology, for The Mount Sinai Health System and Icahn School of Medicine at Mount Sinai Hospital in New York City.
Magnetic resonance imaging of the brain uses magnetic resonance imaging (MRI) to produce high quality two-dimensional or three-dimensional images of the brain and brainstem as well as the cerebellum without the use of ionizing radiation (X-rays) or radioactive tracers.
Perfusion MRI or perfusion-weighted imaging (PWI) is perfusion scanning by the use of a particular MRI sequence. The acquired data are then post-processed to obtain perfusion maps with different parameters, such as BV, BF, MTT and TTP.
Synthetic MRI is a simulation method in Magnetic Resonance Imaging (MRI), for generating contrast weighted images based on measurement of tissue properties. The synthetic (simulated) images are generated after an MR study, from parametric maps of tissue properties. It is thereby possible to generate several contrast weightings from the same acquisition. This is different from conventional MRI, where the signal acquired from the tissue is used to generate an image directly, often generating only one contrast weighting per acquisition. The synthetic images are similar in appearance to those normally acquired with an MRI scanner.
Medical imaging in pregnancy may be indicated because of pregnancy complications, intercurrent diseases or routine prenatal care.
An MRI pulse sequence in magnetic resonance imaging (MRI) is a particular setting of pulse sequences and pulsed field gradients, resulting in a particular image appearance.
Magnetic resonance myelography is a noninvasive medical imaging technique that can provide anatomic information about the subarachnoid space. It is a type of MRI examination that uses a contrast medium and magnetic resonance imaging scanner to detect pathology of the spinal cord, including the location of a spinal cord injury, cysts, tumors and other abnormalities. The procedure involves the injection of a gadolinium based contrast media into the cervical or lumbar spine, followed by the MRI scan.
Gadopiclenol, sold under the brand name Elucirem among others, is a contrast agent used with magnetic resonance imaging (MRI) to detect and visualize lesions with abnormal vascularity in the central nervous system and in the body. Gadopiclenol is a paramagnetic macrocyclic non-ionic complex of gadolinium.
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