Surgery – Diagnostic testing – Detecting nuclear – electromagnetic – or ultrasonic radiation
Patent
1997-05-07
1999-09-21
Jaworski, Francis J.
Surgery
Diagnostic testing
Detecting nuclear, electromagnetic, or ultrasonic radiation
128916, 382274, A61B 800
Patent
active
059546530
ABSTRACT:
A method and an apparatus for automatically adjusting the contrast of a projected ultrasound image. An ultrasound scanner collects B-mode images in a cine memory, i.e., for a multiplicity of slices. The data from a respective region of interest for each slice is sent to a master controller, such data forming a volume of interest. The master controller performs an algorithm that iteratively projects the pixel intensity data in the volume of interest onto a plurality of rotated image planes using a ray-casting technique. Before the projected images are stored in cine memory, the contrast of the pixel intensity data making up those projected images is adjusted by the master controller using a one-to-one mapping of unadjusted pixel intensity data into adjusted pixel intensity data. The mapping is generated by the master controller based on the pixel intensity data of either a source frame or a projected image. The contrast adjustment mapping is applied to each projected image.
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Hatfield William Thomas
Mahan Susan Thayer
Flaherty Dennis M.
General Electric Company
Jaworski Francis J.
Pilarski John H.
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