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Fleischner sign is a radiological sign that aids the diagnosis of pulmonary embolism. [1] The sign indicates the dilatation of the proximal pulmonary arteries due to pulmonary embolism. [2] It was named after Felix Fleischner, who first described it. [3] The Fleishner sign is seen both on X-ray and CT scan of chest/thorax.
The Fleischner Society is an international, multidisciplinary medical society for thoracic radiology, dedicated to the diagnosis and treatment of diseases of the chest. . Founded in 1969 by eight radiologists whose predominant professional interests were imaging of chest diseases, the Society was named in memory of Felix Fleischner, an inspiring educator, clinician, and researcher who made ...
Fleischner’s research focuses mainly on graph theoretical topics such as hamiltonian and eulerian graphs. One of his main achievements is the proof of the theorem according to which the square of every two-connected graph has a Hamiltonian cycle. This result (now known as Fleischner's theorem) had been submitted in 1971 and was published in 1974.
Felix Fleischner was born in Vienna. [3] He became an expert in the field of radiology, and most of his work centered on the chest x-ray. [4] He served as professor and head of radiology of the Second Medical Clinic of the University of Vienna. Being of Jewish ethnicity, [5] Fleischner moved to Boston after Austria was annexed by Germany in 1938.
Fleischner's theorem states that the square of a finite 2-vertex-connected graph with at least three vertices must always be Hamiltonian. Equivalently, the vertices of every 2-vertex-connected graph G {\displaystyle G} may be arranged into a cyclic order such that adjacent vertices in this order are at distance at most two from each other in G ...
Follow Through was the largest and most expensive experimental project in education funded by the U.S. federal government that has ever been conducted. The most extensive evaluation of Follow Through data covers the years 1968–1977; however, the program continued to receive funding from the government until 1995.
Idiopathic pulmonary fibrosis (IPF) synonymous with cryptogenic fibrosing alveolitis [5] is a rare, progressive illness of the respiratory system, characterized by the thickening and stiffening of lung tissue, associated with the formation of scar tissue.
The idea for radio broadcast calisthenics came from "setting-up exercises" broadcast in US radio stations as early as 1923 in Boston (in WGI). [1] The longest-lasting of these setting-up exercise broadcasts was sponsored by the Metropolitan Life Insurance Company (now MetLife), which sponsored the setting-up exercise broadcasts in WEAF in New York which premiered in April 1925. [1]