Surgery – Truss – Pad
Patent
1991-10-17
1993-08-10
Cohen, Lee S.
Surgery
Truss
Pad
H61B 600
Patent
active
052339890
ABSTRACT:
To discriminate a contrast image from a non-contrast image, an X-ray imaging method is characterized by comprising the steps of: acquiring a plurality of X-ray images of a biological body under medical examination; subtracting at least two sets of the X-ray images with each other acquired at temporally different timings to obtain a subtraction image; subdividing one subtraction image into a plurality of image blocks; calculating an averaged value of image concentration with respect to each of the image blocks, thereby obtaining a plurality of averaged values for the subdivided image blocks; calculating a difference between at least two averaged values of image concentration with respect to the image blocks acquired within substantially same temporal timing period; and, judging whether or not the X-ray image is acquired under such a condition that an X-ray contrast medium appears therein based upon the difference in said two averaged values of image concentration.
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Cohen Lee S.
Gilbert Samuel
Kabushiki Kaisha Toshiba
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