Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Commissariat a L'energie Atomique

3d Plus

Olivier Limousin

Sylvie Chevillard

Philippe Laurent

Romain Grall

Daniel Maier

Diana Renaud

Fabrice Soufflet

An apparatus for performing nanoparticle-assisted external beam radiotherapy includes an X-ray spectrometer having an optical axis, an X-ray filter, and a mobile holding structure for holding the X-ray filter and X-ray spectrometer in a first and second relative position, and for switching from the first to second relative position while simultaneously positioning a patient body part in a target region including a target point. An X-ray beam emitted from the X-ray source crosses the X-ray filter before reaching the target point. The propagation of the X-ray beam forms an angle different from 0&#xb0; and 180&#xb0; with the optical axis of the X-ray spectrometer. The second relative position is obtained by inverting the relative positions of the X-ray filter and X-ray spectrometer relative to the patient body part. A method of determining an X-ray dose delivered at a region of a patient body using the apparatus is provided.

Apparatus for performing nanoparticle-assisted external beam radiotherapy and method carried out using said apparatus

Device for locating and imaging gamma or X-radiation sources, comprising: (a) a detection assembly comprising at least two gamma or X-radiation detectors sensitive to position, as well as a coded mask made of a radiation opaque material; and (b) electronic means for processing the electrical pulses provided by said detectors, so as to locate the source and form a bi- or tri- dimensional image thereof. The device is characterized in that the electronic means are suitable for reconstructing a bi- or tri- dimensional image of an X or gamma radiation source by applying a data processing method which combines the principles of Compton imaging and coded-mask imaging.

Device for locating and imaging gamma or X-radiation sources

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Palaiseau, France

Olivier Limousin