1. A therapeutic device (100), comprising: a radiation therapy device (102) for influencing a target area (14) of a subject (144), the radiation therapy device comprising a radiation therapy source (110) for generating electromagnetic radiation (114), wherein the radiation therapy device is configured to rotate the radiation therapy source around the rotation point (117)； a mechanical actuator (104) for holding the radiation therapy device and moving the position and / or orientation of the rotation point； a magnetic resonance imaging system (106) for acquiring magnetic resonance data (170) from the image forming zone (138), the target zone being within the image forming zone, and the magnetic resonance image forming system comprises a magnet (122) for generating a magnetic field within the imaging zone, and the radiation therapy source is configured to rotate at least partially around the magnet. The therapeutic device according to claim 1, wherein the therapeutic device further comprises a processor (156) for controlling the therapeutic device； wherein the therapeutic device further comprises a memory (162) containing machine-executable instructions (180, 182, 184, 186, 188, 190, 192, 194) for execution by the processor； the execution of instructions prompts the processor to: obtain (600, 700) magnetic resonance data using a system for generating magnetic resonance images； reconstruct (602, 702) the magnetic resonance image (172) from the magnetic resonance data； register (604, 704 ) location (174) of the target zone per m1. Терапевтическое устройство (100), содержащее:устройство (102) лучевой терапии для воздействия на целевую зону (14) субъекта (144), причем устройство лучевой терапии содержит источник (110) лучевой терапии для генерации электромагнитного излучения (114), при этом устройство лучевой терапии выполнено с возможностью вращения источника лучевой терапии вокруг точки (117) вращения；механическое исполнительное устройство (104) для удерживания устройст
