Abstract: A method of enhancing a medical image including identifying at least one physical characteristic of a tissue portion based on a characteristic of a portion of the image and applying an image processing technique to the image portion chosen based on the at least one tissue characteristic.

Abstract: Apparatus for producing multiple image slice data responsive to incident radiation, comprising:

Abstract: Apparatus for producing multiple image slice data responsive to incident radiation passing through an object. The apparatus includes a detector array having a plurality (p) of parallel rows of detector elements which receive such incident radiation and generate signals therefrom, each of which rows is characterized by a width measured prior to collimation in the direction perpendicular to a long dimension thereof; and signal processing circuitry which receives signals from the detector elements and which combines the signals in a first combination mode and in at least m additional combination modes. In the first combination mode, the circuitry forms a set of n groups of rows, each such group of rows having an effective group width substantially equal to the effective group width of each of the other groups in the set. In each of the m additional combination modes, the circuitry forms different sets of n groups of rows, each such set having a different effective group width common to all groups in the set.

Abstract: A method for inserting an invasive tool, including: attaching a frame to a human body adjacent to a portion of the body; acquiring an image of the body; determining a trajectory of the tool on the image; calculating points of intersection between the trajectory and two sheet which are adapted to be inserted into the frame; perforating the sheets at the calculated points; placing the sheet within the frame; and inserting the invasive tool through the perforations.