Method of and device for determining quantities characterizing t

Details Method of and device for determining quantities characterizing t Method of and device for determining quantities characterizing t

1989-08-01

1991-09-17

Apley, Richard J.

Surgery

Truss

Pad

128654, 128713, A61B 50275

Patent

active

050485342

ABSTRACT:
A part of the vascular system which may be considered to consist of an entrance vessel (33), a reservoir (37) and an exit vessel (35) is arranged in an apparatus for making subtraction images by means of penetrating radiation, a contrast medium which absorbs radiation being introduced into the entrance vessel. During the flowing of the liquid mixed with contrast medium from the entrance vessel (33), via the reservoir (37), to the exit vessel (35), a series of subtraction images is made. For successive subtraction images having the ranks n and n+1 in the series a part (43) of the entrance vessel (33) which adjoins the reservoir and a part (45) of the exit vessel (35) which adjoins the reservoir are determined for which the equation

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