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US 4,232,226 AGranted
Diagnostic installation for producing tomographic images
AssigneeSiemens Aktiengesellschaft
InventorsRobert Huettner, Gerhard Kuetterer, Hartmut Sklebitz
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AssigneeSiemens Aktiengesellschaft
InventorsRobert Huettner, Gerhard Kuetterer, Hartmut Sklebitz
Estimating the term…
The installation comprises a support table for a patient, a plurality of x-ray sources or similar radiation sources, arranged in a series or planar array, with step-by-step activation of the radiation sources in any desired sequence. The beam of rays and the image field of the image detection installation are shifted in mutually opposite directions, so that sharply defined images are formed of only those details disposed in a specified longitudinal layer of the body as determined by the location of the rotational axis of the beam of rays. In the radiation path of the beam of rays of every radiation source, a beam path control device is arranged for shifting the beam path in relation to a central axis of the radiation source system and of the image pickup system, in dependence upon a laminographic height alteration. For example with plural circular arrays of x-ray sources about the central axis, the beam paths can be jointly adjusted by means of a single motor to intersect at any desired level within the patient receiving region of the support table.
A diagnostic installation for producing laminographic images, comprising a support table for a patient, a plurality of radiation sources arranged in an array on one side of the support table and each being operable for producing a beam of rays penetrating the patient lying on the support table, and an image detection installation on the other side of the support table, and means for effecting the activation of the radiation sources in a desired sequence, and for controlling the image field of the image detection installation in a coordinated manner so that sharply defined images are formed of only those details disposed at a common layer region where the beams of rays converge and intersect a corresponding longitudinal layer of the body, characterized in that beam path control means (21a-21q) are arranged in every path of rays of the radiation beam (10), of each radiation source (6), said beam path control means having respective shiftable apertures for adjusting the path of each beam of rays relative to an axis (M) of the array of radiation sources to effect a laminographic depth adjustment.
Dependencies are inferred from the claim text.