A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
A61B 6/00 (2006.01) H04N 5/235 (2006.01) H04N 5/32 (2006.01) H05G 1/36 (2006.01) H05G 1/60 (2006.01)
Patent
CA 2176272
A brightness detector is used to control the x-ray exposure and the displayed image level in a diagnostic x-ray imaging system. Initially, a region of interest of an image is specified. The average pixel value within the specified region of interest of the image is then found, ignoring regions below a preselected low signal level threshold. Finally, the average pixel value is fed back to the x-ray generator to control the x-ray exposure. The average pixel value is also used to determine a scaling factor to be applied to the image in order to maintain an optimum brightness level when the desired x-ray exposure cannot be attained.
Granfors Paul R.
Juhl Michael A.
Morvan Jean Claude
Company General Electric
Craig Wilson And Company
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