PROTON THERAPY GANTRY

Abstract

A radiation facility including a radiation assembly, preferably for irradiating a patient is provided. The radiation assembly includes a radiation device and a moveable radiation device gantry whereupon the radiation device is mounted. The radiation device includes an accelerator and a projector for irradiating patients. The radiation assembly is movable relative to multiple patient preparation rooms.

Claims

1. A radiation facility, the radiation facility comprising: a radiation assembly, the radiation assembly comprising: a radiation device, wherein the radiation device comprises an accelerator and a radiation projector; and a radiation device gantry, wherein the radiation device gantry can be rotated about a horizontal patient treatment axis, wherein the gantry supports the radiation device at a distance from the horizontal patient treatment axis such that the accelerator and the projector can in unison be rotated about the horizontal patient treatment axis, and wherein the rotation of the radiation device about the horizontal patient treatment axis by the gantry defines a patient treatment space for holding a patient lying parallel to the horizontal patient treatment axis to enable treatment of the patient with the radiation device, the treatment space extending along the horizontal patient treatment axis between a first end and a second opposite end, and wherein the gantry comprises a treatment housing that extends along the horizontal patient treatment axis and encloses the treatment space, and that has at least at one end a treatment space entry port that is dimensioned to enable a patient to move into and out of the treatment space in a direction parallel to the horizontal patient treatment axis; multiple patient preparation rooms, each for preparing a patient for treatment in the patient treatment space, the preparation rooms each being provided with a patient transfer port; and a gantry manipulator, configured to position the gantry in a treatment position relative to each of the multiple patient preparation rooms, in the treatment position, the treatment space entry port being aligned with the patient transfer opening of one of the patient preparation rooms, to enable direct transfer of a patient from the one of the preparation rooms into the treatment space, wherein the gantry manipulator comprises: a gantry track, the gantry track extending along the multiple preparation rooms with the patient transfer ports of the preparation rooms facing the gantry track; a gantry carriage for transporting the gantry over the gantry track along the multiple preparation rooms, wherein the carriage is at each end guided by the gantry track; and a drive for moving the gantry carriage along the gantry track.

2. The radiation facility according to claim 1, wherein the gantry comprises a first slew bearing and a second slew bearing to moveably support the radiation device, the slew bearings each having a central rotational axis that is aligned with the patient treatment axis.

3. The radiation facility according to claim 2, wherein the first slew bearing has a central opening that defines the treatment space entry port for moving a patient into and out of the treatment space, and/or wherein the second slew bearing has a central opening that defines a second treatment space entry port for moving a patient into and out of the treatment space.

4. The radiation facility according to claim 1, wherein the gantry furthermore supports a radiation device counterweight, the counterweight having a weight similar to the radiation device, which radiation device counterweight is supported diametrically opposite to the radiation device, relative to the treatment axis.

5. The radiation facility according to claim 1, wherein the gantry forms the carriage body, and wherein the carriage body is at opposite ends supported on a guide rail of the track via a bogy.

6. The radiation facility according to claim 1, wherein the radiation device, when rotated in a position vertically below the patient treatment axis, is positioned below the gantry track.

7. The radiation facility according to claim 1, wherein the multiple preparation rooms are stacked next to each other along the gantry track, and wherein the gantry carriage is supported by the gantry track for moving the gantry in a horizontal direction along the gantry track and the multiple preparation rooms.

8. The radiation facility according to claim 1, wherein the treatment space has an entry port on each end, and on opposite sides of the gantry track are provided preparation rooms, and wherein the gantry track and the gantry carriage are dimensioned such that the when the carriage supports the treatment space with one end in a treatment position relative to a first patient preparation room, the opposite end of the treatment space is supported in a treatment position relative to a second patient preparation room.

9. The radiation facility according to claim 1, wherein the gantry track is a vertical lift track, the lift track extending along multiple preparation rooms stacked upon each other with their patient transfer ports in vertical alignment, along the lift track, wherein the gantry carriage is guided by the lift track, for moving the gantry in a vertical direction along the lift track and the multiple preparation rooms.

10. The radiation facility according to claim 9, wherein the gantry manipulator comprises at least one gantry counterweight to balance the weight of the radiation assembly.

11. The radiation facility according to claim 1, wherein the gantry track comprises a horizontal gantry track and a vertical lift track, and wherein one track is moveably supported by the other track, and the gantry carriage is coupled with the moveable supported track, to enable movement of the gantry along an array of preparation rooms that comprises multiple preparation rooms stack next to each other and stacked on top of each other.

12. The radiation facility according to claim 11, wherein the gantry track supports a lift carriage, the lift carriage comprising a lift track, and wherein the gantry carriage is guided by the lift carriage, for moving the treatment device in a vertical direction.

13. The radiation facility according to claim 1, wherein the gantry manipulator is provided with a gantry storage at an end of the gantry track, the gantry storage being configured to shield the surroundings from radiation emitted by the radiation device, and wherein the gantry manipulator is configured to position the radiation device gantry and the radiation device in a storage position in the gantry storage.

14. The radiation facility according to claim 13, wherein the gantry storage has an entry and exit opening on one side, and wherein the gantry manipulator is provided with a door for said entry and exit opening, the door being attached to the radiation assembly such that the door can be moved in unison with the radiation assembly by the gantry manipulator and such that when the radiation assembly is moved into the storage position the door is moved in a closing position in which it seals the entry and exit opening of the gantry storage.

15. A radiation facility, the radiation facility comprising: a radiation assembly, the radiation assembly comprising: a radiation device, wherein the radiation device comprises an accelerator and a radiation projector; and a radiation device gantry, wherein the radiation device gantry can be rotated about a horizontal patient treatment axis, wherein the gantry supports the radiation device at a distance from the horizontal patient treatment axis such that the accelerator and the projector can in unison be rotated about the horizontal patient treatment axis, and wherein the rotation of the radiation device about the horizontal patient treatment axis by the gantry defines a patient treatment space for holding a patient lying parallel to the horizontal patient treatment axis to enable treatment of the patient with the radiation device, the treatment space extending along the horizontal patient treatment axis between a first end and a second opposite end, wherein the gantry comprises a treatment housing that extends along the horizontal patient treatment axis and encloses the treatment space, and that has at least at one end a treatment space entry port that is dimensioned to enable a patient to move into and out of the treatment space in a direction parallel to the horizontal patient treatment axis; multiple patient preparation rooms, each for preparing a patient for treatment in the patient treatment space, the preparation rooms each being provided with a patient transfer port; and a patient preparation room manipulator, configured to position the multiple patient preparation rooms in a treatment position, in the treatment position the treatment space entry port being aligned with the patient transfer opening of one of the patient preparation rooms, to enable direct transfer of a patient from one of the preparation rooms into the treatment space.

16. The radiation facility according to claim 15, wherein the patient preparation room manipulator comprises: a patient preparation room track, the patient preparation room track extending along the gantry; a patient preparation room carriage supporting the multiple patient preparation rooms for transporting the rooms over the gantry track along the gantry; and a drive for moving the patient preparation room carriage along the patient preparation room track to position each of the multiple patient preparation rooms in the treatment position.

17. The radiation facility according to claim 15, wherein the treatment space has an entry port on each end, and wherein multiple patient preparation rooms are provided at both ends of the treatment space, wherein the patient preparation rooms comprise a first group of patient preparation rooms at a first of the both ends and a second group of patient preparation rooms at a second of the both ends, wherein the preparation rooms of the first group are supported by a first patient preparation room manipulator, and wherein the patient preparation rooms of the second group are supported by a second patient preparation room manipulator, wherein the first patient preparation room manipulator is configured to position each of the patient preparation rooms of the first group in a treatment position, in the treatment position the treatment space entry port of the gantry at the first end being aligned with the patient transfer opening of one of the patient preparation rooms of the first group to enable direct transfer of a patient from the preparation room into the treatment space, and wherein the second patient preparation room manipulator is configured to position each of the patient preparation rooms of the second group in a treatment position, in the treatment position the treatment space entry port of the gantry at the second end being aligned with the patient transfer opening of one of the patient preparation rooms of the second group to enable direct transfer of a patient from the preparation room into the treatment space.

18. The radiation facility according to claim 1, wherein each of the patient preparation rooms is provided with a patient support table for supporting a patient parallel to the horizontal patient treatment axis and for positioning the patient relative to the radiation device, wherein the patient support table is supported on a support arm that is configured to move the patient support table out of the patient preparation room and into the patient treatment space so that a patient can be secured on the support table inside the patient preparation room and can subsequently be moved into the patient treatment space to be positioned relative to the projector of the radiation device.

19. A method for moving a gantry comprising a radiation device from a first treatment position adjacent a first preparation room to a second treatment position adjacent a second preparation room, using the radiation facility according to claim 1.

20. A method for moving the patient support table from one of the preparation rooms into the treatment space of the gantry of the radiation facility according to claim 15, the method comprising: moving the preparation room in the treatment position, wherein the preparation room is adjacent to the gantry using the patient preparation room manipulator; and moving the patient support table via the treatment space entry port into the treatment space.

21. The radiation facility according to claim 15, wherein each of the patient preparation rooms is provided with a patient support table for supporting a patient parallel to the horizontal patient treatment axis and for positioning the patient relative to the radiation device, wherein the patient support table is supported on a support arm that is configured to move the patient support table out of the patient preparation room and into the patient treatment space so that a patient can be secured on the support table inside the patient preparation room and can subsequently be moved into the patient treatment space to be positioned relative to the projector of the radiation device.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0173] FIG. 01 shows a top view of a first exemplary embodiment of a radiation facility comprising a radiation assembly according to the invention;

[0174] FIG. 02 shows a side view in cross section of the radiation facility of FIG. 1;

[0175] FIG. 03 shows a top view of a second exemplary embodiment of a radiation facility comprising a radiation assembly according to the invention;

[0176] FIG. 04 shows a side view in cross section of the radiation facility of FIG. 3;

[0177] FIG. 05 shows a side view in cross section of a third exemplary embodiment of a radiation facility comprising a radiation assembly according to the invention;

[0178] FIG. 06 shows a top view of a radiation assembly according to the invention;

[0179] FIG. 07 shows a side view in cross section of a fourth exemplary embodiment of a radiation facility in a first position according to the invention;

[0180] FIG. 08 shows a side view in cross section of the fourth exemplary embodiment of a radiation facility in a second position according to the invention;

[0181] FIG. 09 shows a top view of a radiation facility according to the invention;

[0182] FIG. 10 shows a computer drawing of a radiation facility according to the invention;

[0183] FIG. 11 shows a radiation assembly according to the invention;

[0184] FIG. 12 shows a side view and an axial view of a patient treatment room according to the invention;

[0185] FIG. 13 shows a top view of the patient treatment room of FIG. 12;

[0186] FIG. 14 shows a top view of a second exemplary embodiment of a radiation facility comprising a radiation assembly and a radiation storage according to the invention; and

[0187] FIG. 15 shows a top view of a fifth exemplary embodiment of a radiation facility comprising a first and a second patient treatment room manipulator according to the invention.

DETAILED DESCRIPTION OF THE INVENTION

[0188] Whilst primarily presented for illustrative purposes with reference to one or more of the figures, any of the technical features addressed below may be combined with any of the independent claims of this application either alone or in any other technically possible combination with one or more other technical features.

[0189] FIG. 1 shows a top view of a first exemplary embodiment of a radiation facility (1) comprising a radiation assembly (2) according to the invention. The radiation assembly (2) comprises a radiation device (3), preferable a proton radiation treatment device, wherein the treatment device comprises an accelerator (4), and a radiation projector (5). The radiation assembly (2) further comprises a gantry (6) that moveable supports the accelerator (4) and the projector (5).

[0190] The gantry (6) provides a range of movements of the radiation device (3) that defines a cylindrical treatment space which has the patient treatment axis (12) at its centre. The cylindrical treatment space extends between a first end (7) end a second opposite end (8). The gantry comprises a first slew bearing (9) and a second slew bearing (10) to moveable support the treatment device (3), which slew bearings have a central rotational axis (11) that aligns with the patient treatment axis (12).

[0191] The first slew bearing has a central opening (not shown) that defines a treatment space entry port for moving a patient into and out of the treatment space.

[0192] The radiation assembly (2) further comprises a cylindrical shaped treatment housing (13) that fully encloses the treatment space (14). The treatment housing (13) is supported at opposite ends by the first slew bearing (9) and the second slew bearing (10).

[0193] The gantry (6) further comprises a treatment device counterweight (16) used to balance the weight of the radiation device (3).

[0194] The radiation facility (1) comprises multiple patient preparation rooms (17) designed for preparing patients for treatment. Each patient preparation room (17) is provided with a patient transfer port (18). The preparation rooms (17) in the embodiment of FIG. 1 are aligned horizontally.

[0195] The radiation facility (1) further comprises a gantry manipulator (19) for positioning the gantry in a treatment position relative to each of the multiple preparation rooms (17). The gantry manipulator comprises a gantry track (20), for instance rails, for transporting the gantry (6) along the multiple preparation rooms (17).

[0196] In FIG. 1 the gantry carriage (21) is formed from the treatment housing (13).

[0197] The gantry track (20) of FIG. 1 is a circular transport track (20), that extends along the multiple preparation rooms (17) which are placed in a circular set up. The gantry carriage (21) is supported on both sides by the same gantry track (20).

[0198] The multiple preparation rooms (17) are set up with the patient entry port (18) facing a centre of the circular gantry track (20) and the gantry carriage (21) rotates around the centre of the circular gantry track (20).

[0199] The gantry track (20), the gantry carriage (21), and the treatment space (14) are dimensioned such that the when the carriage (21) is aligned with a first preparation room (17) on the first end (7), than the carriage (21) is also aligned with a second preparation room (17) on the second end (8).

[0200] The treatment space (10) can be accessed both from the first end (7) and the second end (8) through respectively the first slew bearing (9) and the second slew bearing (10), in this embodiment patients may enter from distinct preparation rooms (17), without moving the gantry (6) in between treatments.

[0201] FIG. 2 shows in side view a cross section of the radiation facility (1) of FIG. 1. In side view a treatment floor (15) is visible, which is located inside the treatment housing (13). The treatment floor (15) may be used to support additional equipment of allow a person to walk into the radiation assembly (2).

[0202] As shown in FIG. 2 by the dashed lines around the treatment device (3), the treatment device (3) may be moved in a direction perpendicular to the patient treatment axis (12). This allows the projector (5) to be moved upwards as a patient enters the treatment space (14) and may also be used during treatment to improve the treatment effectiveness.

[0203] FIG. 3 and FIG. 4 show a second exemplary embodiment of a radiation facility (1) according to the invention.

[0204] FIG. 3 shows a top view of the second exemplary embodiment of a radiation facility (1) comprising a radiation assembly (2) according to the invention and FIG. 4 shows a side view in cross section of the radiation facility of FIG. 3. The radiation assembly (2) comprises a radiation device (3), preferable a proton radiation treatment device, wherein the treatment device comprises an accelerator (4), and a radiation projector (5). The radiation assembly (2) further comprises a gantry (6) that moveable supports the accelerator (4) and the projector (5).

[0205] The gantry carriage (21) is supported on linear gantry tracks (20) that extend horizontally along multiple patient preparation rooms (17). The carriage is driven by a carriage drive (27). The treatment space (14) has a patient entry port (18) on both sides and the gantry track (20) and the gantry carriage (21) are dimensioned such that when the carriage (21) supports the treatment space (14) with the first end (7) in a treatment position relative to a first preparation room (17), the second end (8) of the treatment space (14) is supported in a treatment position relative to a second preparation room (17).

[0206] The radiation assembly (1) of FIGS. 3 and 4 is equipped with a number of patient supports (23). The patient supports (23) are mounted in the preparation rooms (17) on a base (25). The patient may be supported on a table top (24) which is connected to the base (25) by a moveable arm (26). The moveable arm (26) is configured to move the table top (24) with the patient supported thereon relative to the base (25).

[0207] The moveable arm (26) is configured to move the table top (24) with the patient through the patient entry port (18) into the treatment space (14). The table top (24) may be positioned inside the treatment space (14) in at least two direction relative to the projector (5) to allow the correct area of the patient to be irradiated.

[0208] The table top (24) may be rotatable on the moveable arm (26) relative to the patient treatment axis (12) inside the patient treatment space (14).

[0209] FIG. 5 shows a side view of a third exemplary embodiment of a radiation facility (1) comprising a radiation assembly (2) according to the invention. The radiation assembly (2) is drawn in two exemplary positions in the radiation facility (1).

[0210] The gantry track (20) has a vertical lift component (28) and a horizontal transport component. The lift track (28) extends along multiple vertically stacked preparation rooms (17). The preparation rooms are stacked with their patient entry ports (18) in vertical alignment.

[0211] The gantry carriage (21) is guided by the lift track (28) for moving the gantry in a vertical direction.

[0212] The horizontal component of the gantry track (20) is the transport track (22). The horizontal track (22) and the lift track (28) may be moveable supported by the respective other track. The gantry carriage (21) is enabled to move in both vertical and horizontal directions by the gantry track (20) to align with preparation rooms (17) that are stacked both vertically and horizontally.

[0213] FIG. 6 shows a top view of a radiation assembly (2) according to the invention with the radiation device (3) and the counter weight (16) tilted with respect to a vertical.

[0214] The radiation device (3) of FIG. 6 may be pivoted relative to an axis extending perpendicular to the patient treatment axis (12). Hereby the projector (5) is pivoted relative to a patient supported in the treatment space (14), allowing the patient to be irradiated from additional angles.

[0215] FIGS. 7 and 8 show a fourth exemplary embodiment of a radiation assembly (2) according to the invention.

[0216] FIG. 7 shows a side view in cross section of a radiation facility (1) according to the invention in a first position and FIG. 8 shows a side view in cross section of the radiation facility (1) in a second position.

[0217] The radiation assembly (2) comprises a radiation device (3), preferable a proton radiation treatment device, wherein the treatment device comprises an accelerator (4), and a radiation projector (5). The radiation assembly (2) further comprises a gantry (6) that moveable supports the accelerator (4) and the projector (5).

[0218] The gantry (6) is transported by a gantry carriage (21) which is supported by a gantry track (20) comprising a first transport track (22) and a second transport track (22) that run in two concentric circles. The first transport rack (22) runs along preparation rooms (17) in which patients may be prepared for treatment and the second transport track runs along a central hub (29) which is located in the centre of the radiation facility (1).

[0219] The central hub (29) supports gantry carriage (21) and may also provide the radiation device (3) with resources such as electricity for powering the accelerator (4).

[0220] FIG. 7 shows the radiation assembly (2) in a first position where a patient is supported by a table top (24) in a treatment space (14). The table top (24) is connected to a base (25) by a moveable arm (26). The patient may be irradiated by the radiation device (3)

[0221] FIG. 8 shows the radiation assembly (1) in a second position where the patient is removed from the treatment space (14) and the radiation assembly is rotated by 90 degrees and may be aligned with another patient preparation room (17), for example to receive a second patient from said patient preparation room (17).

[0222] FIG. 9 shows a top view of a radiation facility (1) according to the invention where the radiation assembly (2) is supported by gantry tracks (20) that are concentric. The second end (8) of the radiation assembly (2) is supported by a central hub (29) which is supported by the inner gantry track (20). In this embodiment, the central hub (29) rotates with the radiation assembly (2) as it moves between preparation rooms (17).

[0223] Multiple preparation rooms (17) are equipped with patient supports (23) for moving patients from the preparation rooms (17) into the treatment space (14).

[0224] The radiation facility (1) is further equipped with a trolley (30) for removing and installing parts of the radiation assembly (2) such as the radiation device (3). For example, said trolley (30) may be useful when parts of the radiation assembly (2) have to be removed for maintenance. FIG. 10 shows a computer drawing of a radiation facility (1) according to the invention. The radiation facility comprises a radiation assembly (2), which comprises a radiation device (3), preferable a proton radiation treatment device, wherein the treatment device comprises an accelerator (4) and a counter weight (16). The radiation assembly (2) further comprises a gantry (6) that moveable supports the accelerator (4). The radiation assembly is supported by gantry tracks (20) which are located in concentric circles. The outer gantry track (20) runs along multiple patient preparation rooms (17) which may be accessed by patient entry ports (18) and the inner gantry track (20) supports a central hub (29) which supports the gantry (6) on its second end (9).

[0225] FIG. 11 shows a radiation assembly (2) according to the invention, where the radiation device (3) and the counter weight (16) are rotated by 90 degrees relative to a vertical. In this figure the projector (5) points along a horizontal.

[0226] FIG. 12 shows a patient treatment room (14) according to the invention with a patient supported on a patient support (23). The radiation device (3) is vertically movable. Vertical movement of the radiation device (3) results in vertical movement of the projector (5). This changes de distance between the patient and the projector (5) and may influence the irradiating of the patient. Said patient is oriented perpendicular to the treatment axis (12).

[0227] FIG. 12 also shows a rotational movement of the projector (5) relative to a patient supported on a table top (24). The patient is oriented perpendicular to a treatment axis (12) and the projector (5) moves along a longitudinal direction relative to the patient.

[0228] FIG. 13 shows a patient treatment room according to the invention where a patient is supported by a patient support (23). The patient is oriented perpendicular to the patient treatment axis (12). Possible horizontal movement of the patient is indicated in the figure.

[0229] FIG. 14 shows a top view of a second exemplary embodiment of a radiation facility (1) comprising a radiation assembly (2) and a gantry storage (31) according to the invention. The radiation assembly (2) comprising the gantry (6) may be moved into a storage position wherein the radiation assembly (2) is located inside the gantry storage (31). The gantry storage comprises side walls, a floor and a roof that enclose the radiation assembly (2) in the storage position on all but one side. The gantry storage (31) is sealed by the gantry storage door (32) which closes and seals the gantry storage (31) when the radiation assembly is in the storage position. Thus when the radiation assembly (2) is located in the storage position the radiation facility (2) is fully enclosed such that surroundings are protected from radiation emitted by the treatment device.

[0230] FIG. 15 shows a top view of a fifth exemplary embodiment of a radiation facility (1) comprising a patient treatment room manipulator according to the invention. The radiation facility comprises a first group of patient preparation rooms (33) and a second group of patient preparation rooms (34). in the particular embodiment shown, the preparation rooms of the first group (33) and of the second group (34) are placed on tracks (22) which allow the preparation rooms (17) of the two groups to move independently from the preparation rooms of the other group.

[0231] The preparation rooms of the first group (33) may be moved independently from the preparation rooms of the second group (34) to respective treatment positions. In the figure the first treatment room from the left of the first group (33) and the second treatment room from the left of the second group (34) are in the treatment position such that patients in these rooms may enter the radiation assembly for treatment.

[0232] While a patient prepared in the first group (33) is irradiated a patient of the second group (34) may be prepared for irradiation. This setup allows near constant uptime of the radiation assembly (2) because several patients may be prepared while another patient is irradiated. The patients may enter the radiation assembly after irradiating of a previous patient is finished with a minimum downtime of the radiation assembly. The setup also increases patient comfort since the patients may be transported from the patient preparation room (17) to the radiation assembly (2) by the patient support (23).

[0233] Other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed invention, from study of the drawings, the disclosure, and the appended claims. In the claims, the word comprising does not excluded other elements or steps, and the indefinite article a or an does not exclude a plurality. A single processor or other unit may fulfil the functions of several items recited in the claims. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measured cannot be used to advantage. Any reference signs in the claims should not be construed as limiting the scope.

[0234] The invention is by no means limited to the exemplary embodiment described herein above, but comprises various modifications hereto, in so far as they fall within the scope of the following claims.

REFERENCE IS MADE TO THE FOLLOWING REFERENCE NUMBERS

[0235] 1 Radiation facility [0236] 2 Radiation assembly [0237] 3 Radiation device [0238] 4 Accelerator [0239] 5 Projector [0240] 6 Gantry [0241] 7 First end [0242] 8 Second end [0243] 9 First slew bearing [0244] 10 Second slew bearing [0245] 11 Central rotational axis [0246] 12 Patient treatment axis [0247] 13 Treatment housing [0248] 14 Treatment space [0249] 15 Treatment floor [0250] 16 Counterweight [0251] 17 Preparation room [0252] 18 Patient entry port [0253] 19 Gantry manipulator [0254] 20 Gantry track [0255] 21 Gantry carriage [0256] 22 Transport track [0257] 23 Patient support [0258] 24 Table top [0259] 25 Base [0260] 26 Moveable arm [0261] 27 Drive [0262] 28 Lift track [0263] 29 Central hub [0264] 30 Trolley [0265] 31 Gantry storage [0266] 32 Gantry storage door [0267] 33 First group of patient preparation rooms [0268] 34 Second group of patient preparation rooms