Title:
【発明の名称】X線撮像方法
Document Type and Number:
Japanese Patent JP2853065
Kind Code:
B2
Abstract:
PURPOSE:To enable photographing with high resolutions by holding a change in effective energy of X rays within a limited value with a filter to miminize exposure dose. CONSTITUTION:In a system 10, X rays irradiate from an X-ray source 11 adjusting irradiation energy of X rays with an X-ray controller 15. Then, the X rays irradiated are made to pass through one of filter members 13, 13a, 13b... and 13n indexed by the operation of a rotary filter disc 12 to hold a change in effective energy of X rays within + or -10%. At this point, the operation of rotary filter disc 12 is executed by driving a rotary driver 14 with a filter controller 16 corresponding to an output to the X ray source 11 form the X-ray controller 15. The X rays passing through the filter members are made to irradiate an object to be taken to obtain an image by a direct photography method in an X-ray film in a film cassette 18 or to obtain an fluoroscopic image on a CRT 22 via I and I cameras 19, a camera controller 20 and an image processor 21.
Inventors:
FUJISAKI YUKIO
Application Number:
JP22253591A
Publication Date:
February 03, 1999
Filing Date:
May 23, 1991
Export Citation:
Assignee:
ETSUKUSU RAIDO KK
International Classes:
G03B42/02; A61B6/00; (IPC1-7): A61B6/00; G03B42/02
Domestic Patent References:
| JP62103552A | ||||
| JP6236704U | ||||
| JP5436625Y2 |
Other References:
【文献】木村博一監修「最近の医用画像診断装置」(株)朝倉書店 1988.6.25 p127~p128
【文献】岩井喜典編「CTスキャナ-X線コンピュータ断層撮影装置-」(株)コロナ社 S54.2.20 p35~p37
【文献】岩井喜典編「CTスキャナ-X線コンピュータ断層撮影装置-」(株)コロナ社 S54.2.20 p35~p37