Methods and systems for treating an object

A system for treating an object, comprising a positioning device, an imaging device, a treatment device, and a control device, wherein

• the positioning device is configured to position an object relative to the imaging device or the treatment device
• the imaging device is configured to image the object to obtain a plan image of the object;
• the treatment device is configured to treat a target portion of the object based on a treatment plan generated based on the plan image;
• and
• the control device is configured to:
• generate, based on the plan image, information of a target area of the target portion,
• obtain a plan isocenter, and
• determine the treatment plan based on the plan isocenter and the information of the target area, the plan isocenter referring to a point defined in the plan image and the point defined in the plan image representing a point of the object located at a machine isocenter of the treatment device when the object is treated;
• wherein the object is fixed on the positioning device from a moment that the object is started to be imaged by the imaging device to obtain the plan image to an end of treatment of the target portion.

A non-transitory computer readable medium, comprising at least one set of instructions, wherein when executed by one or more processors of a computing device, the at least one set of instructions causes the computing device to perform a method, the method comprising:

• imaging, using an imaging device, an object fixed on a positioning device to obtain a plan image of the object;
• generating, based on the plan image of the object, information of a region of interest (ROI) of the object;
• generating, based on the information of the ROI, a treatment plan, the treatment plan including a plan isocenter on the plan image, the plan isocenter referring to a point defined in the plan image and the point defined in the plan image representing a point of the object located at a machine isocenter of the treatment device when the object is treated;
• treating, based on the treatment plan, a target portion of the object using a treatment device, the object being fixed on the positioning device from a moment that the object is started to be imaged by the imaging device to obtain the plan image to an end of the treatment of the target portion.