scholarly journals Noninvasive coronary angiography by contrast-enhanced electron beam computed tomography

1998 ◽  
Vol 21 (5) ◽  
pp. 323-330 ◽  
Author(s):  
Stephan Achenbach ◽  
Werner Moshage ◽  
Kurt Bachmann
Keyword(s):  
Computed Tomography ◽  
Electron Beam ◽  
Coronary Angiography ◽  
Electron Beam Computed Tomography ◽  
Contrast Enhanced ◽  
Noninvasive Coronary Angiography

Intravenous three-dimensional coronary angiography using contrast enhanced electron beam computed tomography

1999 ◽  
Vol 83 (6) ◽  
pp. 840-845 ◽  
Author(s):  
Matthew J Budoff ◽  
Ronald J Oudiz ◽  
Conrad P Zalace ◽  
Hamid Bakhsheshi ◽  
Steven L Goldberg ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Electron Beam ◽  
Coronary Angiography ◽  
Three Dimensional ◽  
Electron Beam Computed Tomography ◽  
Contrast Enhanced

Pulmonary perfusion in supine and prone positions: an electron-beam computed tomography study

2001 ◽  
Vol 90 (4) ◽  
pp. 1342-1348 ◽  
Author(s):  
Andrew T. Jones ◽  
David M. Hansell ◽  
Timothy W. Evans
Keyword(s):  
Computed Tomography ◽  
Electron Beam ◽  
Distress Syndrome ◽  
Lung Parenchyma ◽  
Regions Of Interest ◽  
Pulmonary Perfusion ◽  
Electron Beam Computed Tomography ◽  
Gravitational Gradient ◽  
Contrast Enhanced ◽  
Ventilation Perfusion Ratio

Acute respiratory distress syndrome is characterized by alterations in the ventilation-perfusion ratio. Present techniques for studying regional pulmonary perfusion are difficult to apply in the critically ill. Electron-beam computed tomography was used to study the effects of prone positioning on regional pulmonary perfusion in six healthy subjects. Contrast-enhanced sections were obtained sequentially in the supine, prone, and (original) supine positions at full inspiration. Regions of interest were placed along the nondependent to dependent axis and relative perfusion calculated. When corrected for the redistribution of lung parenchyma, a gravitational gradient of pulmonary perfusion existed in both supine and prone positions. The distribution of perfusion between the supine or prone positions did not differ, but data analysis using smaller regions of interest demonstrated marked heterogeneity of perfusion between anatomically adjacent regions of lung. The distribution of lung parenchyma was more uniform in the prone position. Gravity was estimated to be responsible for 22–34% of perfusion heterogeneity in the supine and 27–41% in the prone positions. These data support the hypothesis that factors other than gravity may be at least as important in determining the distribution of pulmonary perfusion in humans. The influence of nongravitational factors may not be detectable if techniques that sample large tissue volumes are employed.

scholarly journals Long-Term Prognostic Value of Coronary Calcification Detected by Electron-Beam Computed Tomography in Patients Undergoing Coronary Angiography

Circulation ◽  
2001 ◽  
Vol 104 (4) ◽  
pp. 412-417 ◽  
Author(s):  
Paul C. Keelan ◽  
Lawrence F. Bielak ◽  
Khalid Ashai ◽  
Lama S. Jamjoum ◽  
Ali E. Denktas ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Electron Beam ◽  
Coronary Angiography ◽  
Prognostic Value ◽  
Coronary Calcification ◽  
Electron Beam Computed Tomography

Intravenous coronary angiography using electron beam computed tomography☆

1999 ◽  
Vol 42 (2) ◽  
pp. 139-148 ◽  
Author(s):  
Benno J. Rensing ◽  
Alfons H.H. Bongaerts ◽  
Robert-Jan M. van Geuns ◽  
Peter M.A. van Ooijen ◽  
Matthijs Oudkerk ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Electron Beam ◽  
Coronary Angiography ◽  
Electron Beam Computed Tomography
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