Ion Beam Applications S.a.

University of Pennsylvania

Rudi Labarbe

Lucian Hotoiu

Yves Jongen

Arnaud Pin

Yves Claereboudt

François Vander Stappen

Gabriel Krier

David Chris Hertlein

Julia Pakela

Wei Zou

Boonkeng Kevin Teo

A particle therapy apparatus configured to scan a charged particle beam over a target according to a pre-defined treatment field which covers a treatment surface in an isocenter plane of the apparatus. The apparatus is capable of scanning the beam over a reachable surface which covers and is larger than the treatment surface. A beam stopper is arranged downstream of the scanning magnets of the apparatus, at a position to prevent the beam from reaching at least a portion of the reachable surface and to allow the beam to reach any portion of the treatment surface. A control system is configured to control the apparatus to direct the beam to the beam stopper and to meanwhile measure a position of the beam, to calculate a difference between a desired position and the measured position of the beam when directed to the beam stopper, and to scan the beam over the target according to the pre-defined treatment field by taking into account the calculated difference.

Device and method for tuning a charged particle beam position

A method for assessing a quality of a beam shaping device includes, establishing with a treatment planning system (TPS) the planned device design of the beam shaping device, manufacturing the beam shaping device according to the planned device design, establishing a CT-scan of the beam shaping device to yield an actual CT-image, determining dimensions and local materials densities from the actual CT-image, determining a calculated dose distribution in the treatment volume (V), and comparing the calculated dose distribution (cDD) with a reference dose distribution (rDD).

Off line quality control of a beam shaping device for radiation therapy

A treatment device includes a pulsed particles accelerator and a processor for controlling the latter to deliver a treatment plan by deposition at HDR of charged particles into a flash volume (Vht) by PBS. To shorten the time for depositing a target dose (Dti) into the cells spanned by the flash spots (Si) of the flash volume (Vht), the flash spots are combined into k sets of n flash spots (Si). After depositing a jpulse dose (Dij) into the cells spanned by a iflash spot (Si) the beam commutes from the ith flash spot (Si) to a next (i+1)th flash spot according to a flash scanning subsequence to deposit a jth dose into the cells spanned by each of the subsequent flash spots of the flash scanning subsequence, until returning to the ith flash spot to deposit a (j+1)th dose (Di(j+1)), and so on When all the cells spanned by all the flash spots of a set have received their corresponding target dose, the beam moves to a next set of combined flash spots and repeats the foregoing pulse deposition steps.

Treatment device for delivering a treatment plan for flash deposition with an accelerator of charged particles by pencil beam scanning

A treatment planning system for generating a plan for treatment by radiation with charged particles beams applied by pencil beam scanning onto a target tissue comprising tumoral cells is provided. The treatment planning system performs a dose definition stage defining the doses to be deposited within the peripheral surface, a beam definition stage defining positions and dimensions of the beamlets of the PBS during the at least one high rate fraction, the beams definition stage including a dose rate definition stage comprising at least one high rate fraction, and a beamlets scanning sequence stage defining a scanning sequence of irradiation of the beamlets. The beamlets scanning sequence stage optimizes a time sequence of beamlets emission such that at the end of a fraction j, a dose is deposited onto at least a predefined fraction of each specific volume at a mean deposition rate superior or equal to a predefined value.

Charged particle treatment planning system with PBS beamlets sequence optimized for high dose deposition rate

A device is provided for positioning a target volume, such as a phantom or a patient, in a radiation therapy apparatus. The apparatus directs a radiation beam towards the target. The apparatus can include a target support whereon the target is immobilized, a two dimensional radiation detector fixed with fixations means in a known geometric relationship to the target support, the radiation detector being capable of detecting the position of intersection of the radiation beam with the detector, and correcting means for correcting the relative position of the beam and the target support, based on the detected intersection position.

Device and method for positioning a target volume in a radiation therapy apparatus

Device for positioning a target volume () such, as a phantom or a patient in a radiation therapy apparatus, said apparatus directing a radiation beam () towards said target (), characterized in that it comprises:&#x2014;a target support () whereon the target is immobilized; a two dimensional radiation detector () fixed with fixations means () in a known geometric relationship to said target support (), said radiation detector () being capable of detecting the position of intersection of said radiation beam () with said detector (); correcting means for correcting the relative position of said beam () and said target support), based on said detected intersection position.

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Boncelles, Belgium

Rudi Labarbe