Elscint Ltd.

Simha Levene

Dan Inbar

Uri Vekstein

Dan Zehavi

A mammalary biopsy needle positioning scheme that improves on the system of U.S. Pat. No. 4,821,727. In the present invention, the arrival of the needle holder into a pixel is distinguished by comparing latest data per pixel to average data per pixel. If the comparison reveals marked differences from the average value, then the average value is discarded and the new data is used whereas in the absence of marked differences, the new data is averaged with the old average. The result is images with highlighted needle holder insertion information thereby providing images of the needle holder in the breast in a much shorter time than provided by the prior art and/or with smaller X-ray doses.

Biopsy needle positioning

An optical communication link coupling a rotating part of a gantry of a computerized tomographic scanner to the stationary part of the gantry. The link comprises an arcuate hollow light conductor having one part rotating with the rotor of the gantry and the other part fixed to the stator of the gantry. Signal bearing light beams are transmitted into the link and are subsequently received from the link after transversing at least a portion theroef.

Optical communication link

Using electrostatic forces for controlling the location of the focal spot of the electron beam on the anode of an X-ray tube, the location is determined by a pair of detectors.

Arrangement for controlling focal spot position in X-ray tube

An X-ray mammographic biopsy needle holder positioning system wherein the X-ray source is tilted to provide parallax views of the needle holder inserted in the breast. The tilting occurs independently of the breast compressor which remains untilted.

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Dorna Hadarom, Israel

Simha Levene