The measurement of multidimensional myocardial dynamics using scattered radiation fields

A new radiographic device, based upon the analysis of scattered radiation fields, has been developed to measure myocardial dynamics. The device consists of an array of detectors arranged to monitor photons scattering from the epicardial surface. Data synthesis permits real-time dynamic displays of t...

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Bibliographic Details
Published inInvestigative radiology Vol. 19; no. 5; p. 385
Main Authors McInerney, J J, Herr, M D, Kenney, E S, Copenhaver, G L, Zelis, R F
Format Journal Article
LanguageEnglish
Published United States 01.09.1984
Subjects
Animals
Dogs
Heart - diagnostic imaging
Heart - physiology
Myocardial Contraction
Radiography
Scattering, Radiation
Technology, Radiologic - instrumentation
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Summary:A new radiographic device, based upon the analysis of scattered radiation fields, has been developed to measure myocardial dynamics. The device consists of an array of detectors arranged to monitor photons scattering from the epicardial surface. Data synthesis permits real-time dynamic displays of the epicardial surface in two and three dimensions. The system has been tested on close-chest canines. Epicardial surface displacements within the closed chest cavity can be measured to 0.1 mm (S.D.). Right or left ventricular surfaces may be monitored on a given scan. Surfaces behind or in front of outer myocardial boundaries within the direct field of view of the detectors are located with equal accuracy. Except for the use of low levels of fluoroscopic x-rays, the procedure is completely noninvasive. Radiation dose levels and component costs for the prototype system are modest. The detector system attaches to a standard fluoroscopic x-ray generator.
ISSN:0020-9996
DOI:10.1097/00004424-198409000-00010