A - Human Necessities – 61 – N
Patent
A - Human Necessities
61
N
A61N 5/10 (2006.01) A61B 6/00 (2006.01) G01N 23/04 (2006.01)
Patent
CA 2384171
The localization of a cancellation cancer detected by a previous diagnosis is carried out in the first stage of a radiation therapy by scanning a part (7) of a body (5) where said cancellation cancer is sited. The scanning is carried out by moving a zone (4) of radiation concentration formed by crossing several roentgen beams. Data on the spissitude of a tissue is received with the aid of detectors (6), to which the secondary radiation produced in the zone (4) of concentration is transferred. In the second stage, scanning with the aid of the same means for creating roentgen beams, which are used in the first stage, is carried out by moving the zone of concentration within the limits of cancellation cancer which are defined in the first stage. X-ray emitters are switched to an increased rate of operation with the aid of a control unit making it possible to perform radiolesion of the cancellation cancer. Various combinations of collimators, roentgen lenses and hemilenses creating a roentgen optical system together with the sources of radiation and detectors are used in order to transmit the X-rays to the zone of concentration, and the secondary radiation to the detectors. A relative motion (10a, 10b) of the roentgen optical system (8) as a its whole and the body of a patient (5) is performed during the scanning. XY sensors (11) recording said motion and the outputs of the detectors (6) are connected outputs to a unit (12) for data processing and display. The inventive method for obtaining information on the spissitude of a biological tissue and the use of the same means for forming roentgen beams in both stages increase the accuracy of measurements and the precision of the radiation effect and decrease the dose of exposure of the healthy tissue.
Au premier stade de la thérapie par rayons, on précise l'emplacement du néoplasme malin, détecté lors des diagnostics antérieurs; à cet effet, on effectue le balayage de la partie (7) du corps du patient (5) dans laquelle se trouve le néoplasme. On effectue le balayage en déplaçant la zone (4) de concentration du rayonnement, créée par l'intersection de plusieurs faisceaux de rayons X. On obtient les informations sur la densité des tissus au moyen de détecteurs (6) auxquels on envoie un rayonnement secondaire généré dans la zone (4) de concentration. Au stade suivant, on effectue le balayage avec les mêmes moyens de création de faisceaux de rayons X qu'au stade précédant, en déplaçant la zone de concentration dans les limites du néoplasme malin établies au premier stade. Un système de commande (9) fait passer les sources (1) du rayonnement X en mode d'intensité plus élevée, suffisante à la destruction par rayons des tissus du néoplasme malin. Lors du balayage de la zone de concentration on déplace (10a, 10b) l'un par rapport à l'autre le système optique et à rayons X (8) et le corps du malade (5). L'utilisation de ce principe pour obtenir des informations sur la densité des tissus biologiques et l'emploi des mêmes moyens pour la génération de faisceaux de rayons X aux deux stades permet d'augmenter l'exactitude des mesures et la précision d'application d'un traitement par rayons et diminuer la dose d'irradiation des tissus sains.
Bennett Jones Llp
Kumakhov Muradin Abubekirovich
LandOfFree
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