X-ray detector with anatomically adapted recess

Details X-ray detector with anatomically adapted recess X-ray detector with anatomically adapted recess

1998-09-22

2001-01-30

Bruce, David V. (Department: 2876)

X-ray or gamma ray systems or devices

Electronic circuit

With display or signaling

C378S189000, C378S177000

Reexamination Certificate

active

06181769

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention is directed to an x-ray detector for acquiring an x-ray image of the type composed of a scintillator which generates an optical image and an arrangement for acquiring the generated optical image.
2. Description of the Prior Art
X-ray detectors of the above general type are utilized for medical purposes in x-ray diagnostics installations.
X-ray detectors currently obtainable in the marketplace usually have a quadratic or rectangular shape. Thus, x-ray films with reinforcing or intensifier film and storage film systems have a rectangular format. The solid-state matrix detectors of cesium iodide (Csl) and amorphous silicon (a-Si) disclosed in European Application 0 189 710 and currently being developed or, as disclosed in U.S. Pat. No. 5,313,066, composed of selenium (Se) and a-Si, also have a rectangular quadratic format.
X-ray image intensifiers, by contrast, have a round structure through which x-rays enter so that a circular x-ray image is produced.
There are types of x-ray exposures wherein it is desirable to come as close as possible to the human body with the x-ray exposure system. In, for example, mammographic exposures, it is desirable to examine the tissue close to the chest wall. In thorax exposures, the neck of the patient should also be imaged. The existing x-ray exposure systems with their formats are not optimally suited for such purposes.
Heretofore, x-ray exposure systems were designed such that the x-ray-sensitive surface extends to the edge of the detector at least at one side. Thus, the spacing from the chest wall of the x-ray film in the film-foil cassette of a mammographic diagnostic installation only amounts to a few millimeters. It is possible to get that close to the chest wall of the patient at only one location.
SUMMARY OF THE INVENTION
An object of the present invention is to provide an x-ray detector of the type initially described wherein the matrix of the region serving for imaging projects as closely as possible to the body of a person under examination, so that examinations of locations that are difficult to reach are also possible.
This object is achieved by an inventively fashioned amorphours silicon x-ray detector, wherein at least one of the sides of the x-ray detector has a cutout or recess with a curved contour. As a result, the x-ray detector can be adapted optimally well to the anatomical conditions, so that it extends directly up to the body of a patient over wide areas.
It has proven advantageous for the x-ray detector to be fashioned such that the contour of the curved side adapts to the anatomy of the body part under examination in an average patient.
Inventively, the x-ray detector can have a concave cutout. The x-ray detector can be adapted to differently shaped bodies or body parts when the concave cutout is asymmetrically fashioned. The x-ray detector can thereby be fashioned such that two neighboring sides that reside at a right angle relative to one another have concave cutouts that can be provided with different contours.
It is proven advantageous for the x-ray detector to be fashioned such that at least one of the sides of the x-ray detector has a convex cutout.
Inventively, the x-ray detector can be fashioned such that one of its sides has a neck cutout.
The x-ray detector can contain a semiconductor image converter for converting an x-ray image into an electrical signal sequence, composed of radiation-sensitive cells arranged in a matrix and driver circuits for driving and reading out the cells that are connected to the cells via lines, with all cells being connected to a driver circuit displaced opposite the cutout.


REFERENCES:
patent: 3381129 (1968-04-01), Duftschmid
patent: 4341955 (1982-07-01), Mulder et al.
patent: 4799094 (1989-01-01), Rougeot
patent: 4905269 (1990-02-01), Mosby
patent: 5043582 (1991-08-01), Cox et al.
patent: 5313066 (1994-05-01), Lee et al.
patent: 5555284 (1996-09-01), Kishigami
patent: 5715292 (1998-02-01), Sayag et al.
patent: OS 35 01 974 (1986-07-01), None

Affiliated with

Also associated with

Rating

X-ray detector with anatomically adapted recess does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with X-ray detector with anatomically adapted recess, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and X-ray detector with anatomically adapted recess will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2436303