Radiation systems for radition treatment and imaging

A radiation system, comprising:

• a storage device including a set of instructions;
• and
• a processor in communication with the storage device, wherein when executing the set of instructions, the processor is configured to cause the radiation system to:
• obtain a treatment plan of an object;
• cause a rotary ring where a treatment radiation source and an imaging radiation source are mounted to rotate around the object, wherein a rotation speed of the rotary ring is determined based on respiration information of the object;
• control an emission of the treatment radiation source and the imaging radiation source based on the treatment plan, to control the emission of the treatment radiation source, the processor is configured to cause the radiation system to:
• partition a target tissue of the object into one or more subvolumes, a subvolume of the one or more subvolumes is a substantially spherical core subvolume that requires little collimator adjustment as a function of beam incidence angle;
• adjust a position of the subvolume such that a center of the subvolume overlaps with a rotational isocenter of the treatment radiation source;
• treat the subvolume and at least one other subvolume of the one or more subvolumes serially.

A radiation system, comprising:

• a bore configured to accommodate an object;
• a rotary ring defines the bore;
• a treatment radiation source and an imaging radiation source mounted on the rotary ring, wherein the rotary ring is mounted to a stationary portion via a slip ring which enables the rotary ring to rotate at least two full rotations;
• and
• a processor configured to control an emission of at least one of the treatment radiation source or the imaging radiation source,
• the processor further configured to cause the radiation system to
• partition a target tissue of the object into one or more subvolumes, a subvolume of the one or more subvolumes is a substantially spherical core subvolume that requires little collimator adjustment as a function of beam incidence angle;
• adjust a position of the subvolume such that a center of the subvolume overlaps with a rotational isocenter of the treatment radiation source;
• and
• treat the subvolume and at least one other subvolume of the one or more subvolumes serially.