Image analysis – Applications – Biomedical applications
Reexamination Certificate
2004-10-08
2008-10-28
Tabatabai, Abolfazl (Department: 2624)
Image analysis
Applications
Biomedical applications
C378S037000
Reexamination Certificate
active
07444009
ABSTRACT:
An improved method for enhancing the contrast between background and lesion areas of a breast undergoing dual-head scintimammographic examination comprising: 1) acquiring a pair of digital images from a pair of small FOV or mini gamma cameras compressing the breast under examination from opposing sides; 2) inverting one of the pair of images to align or co-register with the other of the images to obtain co-registered pixel values; 3) normalizing the pair of images pixel-by-pixel by dividing pixel values from each of the two acquired images and the co-registered image by the average count per pixel in the entire breast area of the corresponding detector; and 4) multiplying the number of counts in each pixel by the value obtained in step 3 to produce a normalization enhanced two dimensional contrast map. This enhanced (increased contrast) contrast map enhances the visibility of minor local increases (uptakes) of activity over the background and therefore improves lesion detection sensitivity, especially of small lesions.
REFERENCES:
patent: 5519221 (1996-05-01), Weinberg
patent: 6475150 (2002-11-01), Haddad
Kieper Douglas Arthur
Majewski Stanislaw
Welch Benjamin L.
Jefferson Science Associates
Tabatabai Abolfazl
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