Title:
放射線画像撮影装置、画像上のピクセルサイズを求める方法および距離計測装置
Document Type and Number:
Japanese Patent JP4659994
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To accurately measure a distance between two points on an image. SOLUTION: Two images with different directions such as angles or positions to the same objective site (a watched blood vessel B) are taken and from difference in coordinates A and A' of the same site on these two images, the distance 1 between two points on a two-dimensional X-ray detector 13 is obtained by a known pixel length of the two-dimensional X-ray detector and in addition, based on the difference in the angles or the positions when two images are obtained, a pixel size p of the images is obtained. Then, by using the pixel size of this image, a measured value X of the distance L between two points on the image is obtained. It is possible thereby to highly accurately measure the distance.
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Inventors:
Taiichiro Meguro
Dr. Nakayama
Dr. Nakayama
Application Number:
JP2001073516A
Publication Date:
March 30, 2011
Filing Date:
March 15, 2001
Export Citation:
Assignee:
Taiichiro Meguro
Toshiba Corporation
Toshiba Corporation
International Classes:
A61B6/00; A61B6/02; G03B42/02; G06T1/00; G06T19/00
Domestic Patent References:
| JP5015526A | ||||
| JP2001276028A | ||||
| JP7148144A | ||||
| JP8112277A | ||||
| JP9122116A | ||||
| JP8131429A | ||||
| JP9187448A | ||||
| JP4089036A |
Attorney, Agent or Firm:
Hiroshi Horiguchi