Matches in SemOpenAlex for { <https://semopenalex.org/work/W1870066754> ?p ?o ?g. }
Showing items 1 to 56 of
56
with 100 items per page.
- W1870066754 endingPage "140" @default.
- W1870066754 startingPage "134" @default.
- W1870066754 abstract "AN instrument is here described that will make separate X-ray exposures of the different phases of motion of the human heart through slits in a metal plate opaque to X-rays. A single X-ray film is made to register the motion in different parts of the heart during one or more cardiac cycles. By moving the photographic film underneath the multiple-slit plate, a series of exposures are produced on the film by the impinging X-rays through each slit. The heart and the slits are stationary with respect to each other so that the same heart area is always exposed in the same slit and the only motion recorded, therefore, is the lateral motion of the heart border itself. With this motion there is produced on the film a wave representing the movement of a definite portion of the heart lying above a particular slit. The use of a multiple-slit plate gives a number of such waves, indicating the motion of the different portions of the heart border, and these, taken collectively, outline the entire heart. The name “Roentgen-ray Cardiograph” is applied to this instrument. Introduction Numerous attempts have been made to register the motion of the human heart on X-ray films. The need for such an instrument is expressed by Dr. Alexander Lambert, who, in discussing the electrocardiograph, says (1): “The electrocardiographic curves, however, are but the expression of the excitation wave as it passes through the heart. They are not the expressions of the contraction of the heart, and there is no instrument that measures the amount of contracting power left in a damaged myocardium, nor, as a matter of fact, in the normal muscle.” As a meter of the beating heart the roentgen-ray cardiograph differs from the electrocardiograph in that it does give a true expression of the contraction of the heart radiologically; and although it does not analyze the excitation wave, as the electrocardiograph does, this instrument gives the detailed effective results on the heart produced by the excitation impulses or produced by the automatic rhythmicity of the heart muscle itself. Historical In 1909, Groedel (2) described a means for taking quick pictures of the moving heart by arranging twenty-four cassettes on a support which were pushed forward by a screw so that the end one dropped off when a hole in a shutter in front of it rotated by. This gave a photograph of the heart on twenty-four quick successive films. It probably accomplished the result of the modern moving picture machine, but was unwieldy and took but a few exposures at a time. Gott and Rosenthal (3), in 1912, used a stationary slit and shoved a cassette rapidly past it, obtaining a shadowgraph showing motions in the left ventricle. In 1913, Becker (4) combined the work of Gott and Rosenthal with the electrocardiograph to show the origin of heart impulses in relation to the various waves of the electrocardiograph." @default.
- W1870066754 created "2016-06-24" @default.
- W1870066754 creator A5007446862 @default.
- W1870066754 date "1928-08-01" @default.
- W1870066754 modified "2023-09-24" @default.
- W1870066754 title "The Roentgen-ray Cardiograph" @default.
- W1870066754 doi "https://doi.org/10.1148/11.2.134" @default.
- W1870066754 hasPublicationYear "1928" @default.
- W1870066754 type Work @default.
- W1870066754 sameAs 1870066754 @default.
- W1870066754 citedByCount "0" @default.
- W1870066754 crossrefType "journal-article" @default.
- W1870066754 hasAuthorship W1870066754A5007446862 @default.
- W1870066754 hasConcept C104114177 @default.
- W1870066754 hasConcept C120665830 @default.
- W1870066754 hasConcept C121332964 @default.
- W1870066754 hasConcept C164705383 @default.
- W1870066754 hasConcept C193544012 @default.
- W1870066754 hasConcept C199215989 @default.
- W1870066754 hasConcept C2983437453 @default.
- W1870066754 hasConcept C2989005 @default.
- W1870066754 hasConcept C71924100 @default.
- W1870066754 hasConcept C74650414 @default.
- W1870066754 hasConcept C99398487 @default.
- W1870066754 hasConceptScore W1870066754C104114177 @default.
- W1870066754 hasConceptScore W1870066754C120665830 @default.
- W1870066754 hasConceptScore W1870066754C121332964 @default.
- W1870066754 hasConceptScore W1870066754C164705383 @default.
- W1870066754 hasConceptScore W1870066754C193544012 @default.
- W1870066754 hasConceptScore W1870066754C199215989 @default.
- W1870066754 hasConceptScore W1870066754C2983437453 @default.
- W1870066754 hasConceptScore W1870066754C2989005 @default.
- W1870066754 hasConceptScore W1870066754C71924100 @default.
- W1870066754 hasConceptScore W1870066754C74650414 @default.
- W1870066754 hasConceptScore W1870066754C99398487 @default.
- W1870066754 hasIssue "2" @default.
- W1870066754 hasLocation W18700667541 @default.
- W1870066754 hasOpenAccess W1870066754 @default.
- W1870066754 hasPrimaryLocation W18700667541 @default.
- W1870066754 hasRelatedWork W1870066754 @default.
- W1870066754 hasRelatedWork W1981283379 @default.
- W1870066754 hasRelatedWork W1984434954 @default.
- W1870066754 hasRelatedWork W1994631353 @default.
- W1870066754 hasRelatedWork W2013651940 @default.
- W1870066754 hasRelatedWork W2013990295 @default.
- W1870066754 hasRelatedWork W2071433651 @default.
- W1870066754 hasRelatedWork W2414664469 @default.
- W1870066754 hasRelatedWork W4242266952 @default.
- W1870066754 hasRelatedWork W4252516156 @default.
- W1870066754 hasVolume "11" @default.
- W1870066754 isParatext "false" @default.
- W1870066754 isRetracted "false" @default.
- W1870066754 magId "1870066754" @default.
- W1870066754 workType "article" @default.