US 2002/0154729 A1 · X-ray sensor signal processor and x-ray computed tomography system using the same

Abstract

An X-ray sensor signal processor including capacitors 114 for removing DC components (dark currents) from output signals of semiconductor sensors 21 to 2n detecting pulse-like X-rays passed through an object, and integrators (each of which is constituted by a combination of an operational amplifier 115, a resistor 116 and a capacitor 117) for integrating the output signals of the X-ray sensors after removal of the DC components by the capacitors 114. By this, a value proportional to the average number of photons in X-rays can be obtained even in the case where a small number of incident photons are given, and an X-ray CT system using the X-ray sensor signal processor.

Claims7

Dependent claims

An X-ray CT image scanning method comprising the steps of:

receiving information of a credit given to a customer for an order of image scanning made by said customer;
confirming a content of said credit;
confirming specifications of images of a subject scanned by X-ray CT and presented by said customer when said order is accepted;
replying said customer that the image scanning of said subject is to be handled, through a communication line when image scanning is to be executed on the basis of said specifications of image scanning;
scanning images of said subject provided by said customer by using an X-ray CT system on the basis of said specifications;
and
sending data of the scanning images to said customer.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application

10/067,914Filed 8 Feb 2002

Priority

JP 11-06602312 Mar 1999

Published

24 Oct 2002

Term ends

Not estimatedThe source records don’t support an estimate.

Classification10 codes

G01N 23/046
And forming images of the material: using tomography, e.g. computed tomography [CT]
G16H 40/63
For the operation of medical equipment or devices: for local operation
H04N 23/30
Cameras or camera modules comprising electronic image sensors; Control thereof: for generating image signals from X-rays
H04N 25/63
Noise processing, e.g. detecting, correcting, reducing or removing noise: applied to dark current

X-ray sensor signal processor and x-ray computed tomography system using the same

Life of this patent

X-ray sensor signal processor and x-ray computed tomography system using the same

Life of this patent

Abstract

Claims7