US 4,262,306 A · Method and apparatus for monitoring of positions of patients and/or radiation units

Abstract

An account is given of a method for monitoring of the position of patients and/or radiation units in which a first position is taken by a camera and stored and comparison between the stored position and the second position taken by the camera takes place. The first position taken by the camera and able to be reproduced as a positive or negative image is changed into a negative image and is so put into line with the second position, taken by the camera, in the positive or negative image that all image points of the first position are able to be seen in a first color contrast and that all image points of the second position are able to be seen in a second color contrast and in that all image points which are in line are able to be seen in a third color contrast. The second position of the patient and/or of the radiation unit is changed till only the third color contrast is to be seen.

Claims37

Dependent claims

A method for adjusting a second position of a patient and/or a radiation unit to coincide with a previous first position of the patient and/or radiation unit comprising the steps of:

generating by the use of a camera during a first interval of time first position data related to a first position of a patient and/or a radiation unit;
storing the first position data in a data store;
generating by the use of a camera beginning at a second point in time subsequent to the end of the first time interval, second position data related to a second position of the patient and/or radiation unit;
retrieving the first position data from the data store;
displaying a first image related thereto;
displaying simultaneously with the displaying of the first image, a second image related to the second position data;
comparing the displayed images;
adjusting the second position of the patient and/or or radiation unit so as to minimize the difference between the first and second images;
and
repeating said steps of comparing and adjusting as often as necessary to produce alignment of the first and second images, whereby the second position of the patient and/or radiation unit will be substantially the same as the first position of the patient and/or radiation unit.

7 more elements

Dependencies are inferred from the claim text.

Method and apparatus for monitoring of positions of patients and/or radiation units

Life of this patent

Method and apparatus for monitoring of positions of patients and/or radiation units

Life of this patent

Abstract

Claims37