Radiology, Vol 137, 213-215, Copyright © 1980 by Radiological Society of North America
Changerless peripheral angiography: a new concept
K Amplatz, J Crass, R Moore, D Korbuly, F Kotula and WR Castaneda-Zuniga
The authors describe a new technique using the principle of rotational
scanography, in which the x-ray tube is rotated through the center of the
focal spot and scans the field of interest. A single primary and secondary
slot system in conjunction with an 8:1 grid is used for efficient scatter
removal. If the speed of blood flow is increased by reactive hyperemia and
a large amount of contrast medium is injected, the abdomen to the toes can
be scanned with one injection. The advantages of this technique are that a
127-cm field can be covered with a 6 degree or 12 degree target tube and
without an especially high ceiling, and the film changer is eliminated. The
angiograms are markedly improved because virtually all scatter is
eliminated, and exposure is reduced since only one radiograph is necessary.
