Varian Medical Systems

A cryoprobe (300) includes a needle (304) defining an internal cavity, a cryogen conduit (308) positioned in the internal cavity, and a multi-filar heater (314) positioned radially outward of the cryogen conduit in the internal cavity configured to heat the needle to a predetermined temperature.

The invention relates to a patient couch (2) for positioning and/or supporting a patient for radiotherapy, comprising: - a couch board section (7) for accommodating the patient, - a base section (8) for attachment to the floor, - a roll-pitch assembly (11) arranged between the base section (8) and the couch board section (7), designed to pivot the couch board section (7) about a roll axis (17) and/or a pitch axis (15), characterized by a cover unit (19) for concealing the roll-pitch assembly (11) and/or as a pinch protection for hands, wherein the cover unit (19) forms a shell cover and comprises at least two cover shells (20), wherein one of the cover shells (20) forms a roll cover shell (d) and another of the cover shells (20) forms a pitch cover shell (20b), wherein the roll cover shell (20b) is designed and/or arranged to compensate a roll movement of the roll-pitch assembly (11), wherein the pitch cover shell (20b) is designed and/or arranged to compensate a pitch movement of the roll-pitch assembly (11).

A cryoablation probe (200) includes a needle (202) forming an inner cavity. The needle includes at least one flow disruptor (206) positioned in the inner cavity. The cryoablation probe also includes a cryogen lumen (310) configured to deliver cryogen toward a distal end of the needle (204), wherein the at least one flow disruptor induces a turbulent flow of the cryogen in the inner cavity.

A linear accelerator for a radiation therapy system includes a plurality of cavities aligned along a length of the linac and a channel extending between adjacent cavities of the plurality of cavities. The plurality of cavities include a first material and the channel includes a second material different from the first material.

A cryoprobe (100) includes a shell (102) extending in an axial direction (120) and forming a needle for positioning at a target tissue and a tube (108) extending in the axial direction positioned radially inward of the shell (102). An inner surface of the shell (102) and the outer surface of the tube (108) define an insulating cavity (304) therebetween.

An ion chamber (116) comprises a first ion chamber window assembly (200) and an ion chamber housing (1000) having a first opening. The first ion chamber window assembly includes a first ion chamber window (2000) and a first metal plating (200) arranged at a peripheral edge of the first ion chamber window, wherein the first ion chamber window is formed of at least a first metal and has a first surface exposed through the first opening. The first metal plating is formed of a second metal. The first metal is different from the second metal, and the first ion chamber window assembly is fixed, via the first metal plating, on an inner side of the ion chamber housing (1000) at a periphery of the first opening.

A control circuit can access (201) three-dimensional image information (202) of a target volume for a particular patient as well as ablation zone information (204) corresponding to a particular ablation treatment context. The control circuit can then register (205) the three-dimensional image information of the target volume with the ablation zone information to generate resultant information representing a radiation treatment plan, and then generate (206) a two-dimensional representation of target volume coverage by a corresponding ablation zone as a function of the resultant information. That two-dimensional representation of target volume coverage by the corresponding ablation zone can then be presented (207) via a user interface.

A radiation treatment system 100, 300 includes a base stand 200 fixed to or resting on a support surface external to the radiation treatment system, a rotatable gantry 110 with a treatment-delivering radiation source mounted thereon, wherein the rotatable gantry is rotatably coupled to the base stand via a bearing 205, and an electric motor for rotating the rotatable gantry and a portion of the bearing fixed to the gantry. The electric motor includes a first assembly 510 that is fixed to the base stand; and a second assembly 520 that is fixed to the gantry and is separated from the first assembly by an air gap 501, wherein magnetic flux across the air gap causes the electric motor to rotate the rotatable gantry and the portion of the bearing fixed to the rotatable gantry.

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Zusammenfassung wird geladen …