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Proceedings Paper

The Value Of Making The 0.2Mm Microfocus Tube The Standard For Routine Direct Magnification Angiography
Author(s): Arthur E. Rosenbaum; Harvey Eisenberg; Wiyada Soujatonand; Lawrence S. Oresick; Therese A. Martin; Maureen A. O' Toole; William P. Holland; George R. Mahn
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Paper Abstract

For frequent visualization of the fine blood vessels within the brain substance, geo-metric magnification is required at angiography. However, full skull geometric magnification on large size film changers may also prove insufficient for visualization of these vessels. Further magnification of most cerebral arteries in lateral projection can be obtained without compromising full skull coverage and without additional radiation exposure! This is accomplishable when a true 0.2mm focal spot of uniform intensity distribution is substituted for the nominal 0.3mm and the usual position of the tube and film changer is reversed relative to the skull. This tube-changer reversal contradicts the standard technique for non-magnification radiography. The additional capacity for gaining moderately high magnifications with the 0.2mm focal spot is also advantageous. It is recommended that the 0.2mm focal spot become the standard tube manufactured for magnification neuroangiography. If a second focal spot accompanies it, either a 0.1mm size can be used for higher magnifications or a high kilowatt loading larger spot can be matched with it for general radiographic or conventional angiographic use.

Paper Details

Date Published: 23 December 1976
PDF: 12 pages
Proc. SPIE 0096, Application of Optical Instrumentation in Medicine V, (23 December 1976); doi: 10.1117/12.965413
Show Author Affiliations
Arthur E. Rosenbaum, Presbyterian-University Hospital (United States)
Harvey Eisenberg, Harvard Medical School and Beth Israel Hospital (United States)
Wiyada Soujatonand, University of Bankok (Thailand)
Lawrence S. Oresick, University of Pittsburgh (United States)
Therese A. Martin, Presbyterian-University Hospital (United States)
Maureen A. O' Toole, Presbyterian-University Hospital (United States)
William P. Holland, Machlett Laboratories Inc. (United States)
George R. Mahn, Machlett Laboratories Inc. (United States)


Published in SPIE Proceedings Vol. 0096:
Application of Optical Instrumentation in Medicine V
Robert K. Cacak; Paul L. Carson; Gregory Dubuque; Joel E. Gray; William R. Hendee; Raymond P. Rossi; Arthur Haus, Editor(s)

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