Therapeutic apparatus comprising a radiotherapy apparatus, a mechanical positioning system, and a magnetic resonance imaging system

摘要

A therapeutic apparatus (400, 500) comprising a radiotherapy apparatus (402), a mechanical positioning system, and a magnetic resonance imaging system (404). The radiotherapy apparatus comprises a radiotherapy source (408). The radiotherapy apparatus is adapted for rotating the radiotherapy source at least partially around a subject support. The therapeutic apparatus further comprises a memory containing machine executable instructions (468, 470, 472, 474, 476). Execution of the instructions causes a processor to repeatedly: acquire (100) the magnetic resonance data using the magnetic resonance imaging system; reconstruct (102) a magnetic resonance image (460) from the magnetic resonance data; register (104) a location (462) of the target zone in the magnetic resonance image; generate (106) radiotherapy control signals (464) in accordance with the location of the registered target zone; generate (108) mechanical positioning control signals (466) in accordance with the registered target zone and the radiotherapy control signals; and send (110) the radiotherapy control signals to the radiotherapy system and send (110) the mechanical positioning control signals to the mechanical positioning system.

主权项

1. A therapeutic apparatus comprising:
a radiotherapy apparatus, the radiotherapy apparatus comprising:
a radiotherapy source for directing electromagnetic radiation into a target zone;
wherein the radiotherapy apparatus is adapted for rotating the radiotherapy source at least partially around a subject support,wherein the radiotherapy apparatus is adapted for tilting the radiotherapy source with respect to an axis of rotation of the radiotherapy source; a mechanical positioning system for positioning a subject support; a magnetic resonance imaging system for acquiring magnetic resonance data from an imaging zone, the magnetic resonance imaging system comprising:
a magnet for generating a magnetic field within the imaging zone,wherein the target zone is within the imaging zone, a cylindrical collimator assembly, comprising:
a rotatable collimator member having a plurality of channels,
wherein the rotatable collimator member comprises a rotatable disk in which each of the plurality of channels are provided at different radial distances relative to a center of rotation of the rotatable disk; a computer processor for controlling the therapeutic apparatus; and a computer memory containing machine executable instructions, the executable instructions arranged for execution by the computer processor, wherein execution of the instructions causes the processor to repeatedly:
acquire the magnetic resonance data using the magnetic resonance imaging system;reconstruct a magnetic resonance image from the magnetic resonance data;register a location of the target zone in the magnetic resonance image;generate radiotherapy control signals in accordance with the location of the registered target zone,
wherein the radiotherapy control signals cause the radiotherapy source to irradiate the target zone,wherein the radiotherapy control signals cause an angular rotation of the rotatable collimator member and the angular rotation at least partially controls the location of a beam path of the radiotherapy source in the target zone;generate mechanical positioning control signals in accordance with the registered target zone and the radiotherapy control signals, wherein the mechanical positioning control signals cause the mechanical positioning system to position the subject support; and send the radiotherapy control signals to the radiotherapy system and send the mechanical positioning control signals to the mechanical positioning system.