Image processing method and system for radiological diagnostics

Details Image processing method and system for radiological diagnostics Image processing method and system for radiological diagnostics

1989-04-05

1991-07-09

Jaworski, Francis

Surgery

Truss

Pad

128654, 358111, 36441323, 378 99, A61B 600

Patent

active

050295861

ABSTRACT:
An estimating circuit estimates the thickness of the subject appearing on a mask image, by using the value of the thickness of a uniform material equivalent to a subject, with respect to each pixel of the mask image, based on radiographic conditions and pixel density of each pixel. A correction coefficient table has correction coefficients corresponding to the thickness of the uniform material. One of the correction coefficients is selected from the correction coefficient table, based on the estimated thickness obtained from the estimating circuit. The selected correction coefficient and each pixel of the mask image are subjected to an arithmetic operation, thereby to produce a mask image in which influence due to beam-hardening effect is corrected. On the other hand, a suitable correction coefficient is selected from a correction coefficient table having correction coefficients corresponding to the thickness of the contrast medium, based on the estimated thickness of the image and on a subtraction image obtained by subtracting the mask image from a contrast image produced by irradiating radioactive rays onto the subject in which the contrast medium is injected. The selected correction coefficient and each pixel of the subtraction image are subjected to an arithmetic operation, thereby to obtain a mask image in which influence due to beam-hardening effect is corrected.

REFERENCES:
patent: 4335307 (1982-06-01), DeVries et al.
patent: 4375068 (1983-02-01), McBride
patent: 4639867 (1987-01-01), Suzuki et al.
patent: 4813061 (1989-03-01), Kakegawa
patent: 4837796 (1989-06-01), Ema

Affiliated with

Also associated with

Rating

Image processing method and system for radiological diagnostics does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Image processing method and system for radiological diagnostics, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image processing method and system for radiological diagnostics will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-610477