Helical scanning computed tomography apparatus

Details Helical scanning computed tomography apparatus Helical scanning computed tomography apparatus

1992-08-07

1994-03-01

Envall, Jr., Roy N.

Boots, shoes, and leggings

36441313, 36441315, 36441316, 36441318, 36441319, G06F 1542

Patent

active

052914020

ABSTRACT:
An x-ray computed tomography system for helical scanning, translates a patient as projections of the patient at various beam angles are obtained and employs a detector array having multiple rows displaced along the direction of translation. The intensity signals from the multiple rows are combined to produce a composite projection having an improved beam profile along the translation direction. The composite projection is generated by adding together intensity signals obtained for detector elements in each column, at a given beam angle, and for related columns measuring rays having angles differing by x radians or an integer multiple thereof. The intensity signals are selected so that their points of acquisition cluster closely about the position of the desired slice plane.

REFERENCES:
patent: 4630202 (1986-12-01), Mori
patent: 4965726 (1990-10-01), Heuscher et al.
patent: 5032990 (1991-07-01), Eberhard et al.
patent: 5046003 (1991-09-01), Crawford

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