Accuray has been granted a patent for a radiation delivery system that includes a radiation source and a multi-leaf collimator (MLC). The MLC is offset to shift the projections of the radiation beam based on the offset, allowing for precise targeting of the radiation beam. The system also allows for movement along a path of rotation around the target. GlobalData’s report on Accuray gives a 360-degree view of the company including its patenting strategy. Buy the report here.

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According to GlobalData’s company profile on Accuray, Vaping device aerosol generators was a key innovation area identified from patents. Accuray's grant share as of September 2023 was 50%. Grant share is based on the ratio of number of grants to total number of patents.

Patent granted for a radiation delivery system with offset mlc

Source: United States Patent and Trademark Office (USPTO). Credit: Accuray Inc

A recently granted patent (Publication Number: US11712583B2) describes a radiation delivery system that includes a radiation source and a multi-leaf collimator (MLC). The radiation source generates a radiation beam that is delivered to a target, and the MLC is operatively coupled to the radiation source. The system allows for the movement of the radiation source and the MLC along a path of rotation around a point of interest, such as a fixed isocenter.

One of the key features of the system is the offset of the MLC, which can be shifted by a positive or negative one-quarter leaf width in a direction parallel to the path of rotation and perpendicular to the line connecting the radiation source to the point of interest. This offset causes the projections of the radiation beam to be shifted based on the offset. The offset can also include a tolerance of up to a positive or negative one-eighth leaf width.

The system can be used with different types of radiation beams, including megavolt (MV) treatment beams and kilovolt (kV) treatment beams. It can also be integrated with different types of gantries, such as C-arm gantries or ring gantries, which rotate the radiation source around the point of interest. Additionally, a robotic arm can be used to position the radiation source at multiple positions along a circular or elliptical trajectory around the point of interest.

The patent also describes a specific configuration of the MLC, which includes a plurality of leaves that can move independently to shape the radiation beam. The end leaf of the MLC has a width that is different from the other leaves, and the MLC can be moved by an offset corresponding to a positive or negative one-quarter width of a leaf in a direction perpendicular to the movement of the leaves and parallel to the path of rotation around the point of interest.

Overall, this patent describes a radiation delivery system and method that allows for precise and customizable radiation beam delivery to a target. The offset of the MLC and the ability to move the radiation source and MLC along a path of rotation provide flexibility and accuracy in shaping and delivering the radiation beam.

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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.

GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.