Methods for positioning an internal portion of a body relative t

X-ray or gamma ray systems or devices – Specific application – Computerized tomography

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378205, 29407, A61B 608

Patent

active

047649445

ABSTRACT:
Procedure for positioning a small internal portion of a body at a predetermined point relative to an external source of shock waves or the like, for treatment of the positioned body portion, wherein a volume of the body including the body portion is imaged with penetrating radiation by each of two detectors respectively aligned with viewing axes intersecting at the predetermined point; the coordinates of the body portion on each of the two images thus produced are measured and corrected for imaging distortions; from these corrected coordinates, there is derived a set of three-dimensional spatial coordinates for the body portion, defining a displacement vector giving the magnitude and direction of body motion required to position the body portion at the predetermined point; and the body is displaced with a resultant motion of that magnitude and direction.

REFERENCES:
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patent: 4297582 (1981-10-01), Schweirz et al.
patent: 4455667 (1984-06-01), Schweirz et al.
patent: 4573179 (1986-02-01), Rutt
patent: 4583242 (1986-04-01), Vinegar et al.
patent: 4633494 (1986-12-01), Klausz

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