公开(公告)号：CA2814796A1

公开(公告)日：2012-04-19

申请号：CA2814796

申请日：2011-10-13

Applicant: S I T SORDINA IORT TECHNOLOGIES SPA

Inventor： FELICI GUISEPPE ,  CICCOTELLI ALESSIA ,  IACOBONI VICENZO ,  DE ANGELIS FABIO ,  MANGIARACINA NICOLA ,  GAVA AQUINO

IPC: G21K1/04 ,  A61N5/10 ,  G21K5/04

Abstract: The present invention concerns a device for shaping an electron beam of a machine for intraoperative radiation therapy (IORT - Intra Operative Radiation Therapy) using a tubular applicator (3) having a duct through which the electron beam is transmitted, the device being characterised in that it comprises a slab (1), provided with a hole corresponding to the duct of the tubular applicator (3), and at least one planar element (10) comprising an upper plate (11) and a lower plate removably attachable to each other through first mechanical coupling means (13), said at least one planar element (10) being removably attachable to the slab (1) through second mechanical coupling means (13, 14) so that the arrangement of said at least one planar element (10) with respect to the slab (1) is adjustable so as to define an aperture of lower area than that of the section of the duct of the tubular applicator (3), the upper plate (11) of each planar element (10) being made of a first sterilisable biocompatible material with a first atomic number, the lower plate of each planar element (10) being made of a second sterilisable biocompatible material with a second atomic number larger than the first atomic number, whereby the lower plate attenuates X-rays produced by the upper plate (11). The present invention further concerns an automatic method for computing distribution of dose radiated by a IORT machine through such device for shaping an electron beam.

公开(公告)号：CA2874387A1

公开(公告)日：2013-11-28

申请号：CA2874387

申请日：2013-05-22

Applicant: S I T SORDINA IORT TECHNOLOGIES SPA

Inventor： FELICI GIUSEPPE ,  IACOBONI VINCENZO ,  CICCOTELLI ALESSIA ,  DE ANGELIS FABIO

IPC: A61N5/10 ,  H01J3/08

Abstract: A radiation dose control device for controlling an electron beam pulse delivered during a therapy session of IORT (Intra-Operative Radiation Therapy), comprising a PWM system configured to provide an electron injection at a DC voltage at each pulse of an input electron beam (FE) sent to the input of an electronic gun (G) of a linear accelerator or linac (AL), so that the output electron beam (FU) exiting said linac (AL) is highly stable, and so that a variation of the radiation dose of said output electron beam (FU) results only from the variation of the delivery time of said input electron beam (FE); said dose variation of the output electron beam (FU) is thus directly proportional to said delivery time of the input electron beam (FE).