US 5,690,107 A · Method for positioning and marking a patient at a diagnostic apparatus

Abstract

The invention related to positioning and marking a patient at a diagnostic apparatus, for example before and after a fluoroscopic examination in a computer tomograph comprising at least four line lasers being movably supported for travelling along a respective axis, two line lasers being arranged above a patient placed on a movable table projecting a sagittal line and a transverse line on the body of the patient and two further line lines arranges sidewards of the table each projecting a line along the body axis sidewards on the body, further comprising numerically controlled drive means for moving the line lasers to adjust the projected lines in a transverse direction and comprising a positioning control device, controlling the drive means and a manually operated input device for supplying the coordinates, the location and extension of the radiation zone as determined by the computer tomograph for being supplies to the control device, and projecting orthogonal coordinate axes on the patient for marking the projection of a radiation zone on the skin.

Claims5

Dependent claims

A method of marking a patient for a radiation treatment of a zone of said patient, said treatment using a radiation source having a focus, a selectable angle of divergence and an isocenter about which said radiation source can be rotated in a vertical plane, with said focus thus describing a circle, with said method including the following steps:

determining the coordinates of the location and extension of said radiation zone of said patient by means of a computer tomograph;
selecting the direction of said radiation with respect to the body of said patient and said divergent angle;
positioning said patient such that said center of said radiation zone coincides with said isocenter;
generating a first laser beam by a line laser which is vertically displaceable and rotatable about a horizontal axis, said line laser being adjusted such that said laser beam intersects said focus and is tangent to said radiation zone on one side;
marking the line thus projected on the skin of said patient;
projecting a second laser beam by said line laser or a second line laser such that its beam intersects said focus and is tangent to said radiation zone on the opposite side;
and
marking the second line thus projected on said skin of said patient.

5 more elements

Dependencies are inferred from the claim text.

Method for positioning and marking a patient at a diagnostic apparatus

Life of this patent

Method for positioning and marking a patient at a diagnostic apparatus

Life of this patent

Abstract

Claims5