Methods and systems using modeling of crystalline materials for spot placement for radiation therapy

A non-transitory computer-readable storage medium storing computer executable instructions that, when executed by one or more processors, cause a computer system to perform a method used for planning radiation treatment, the method comprising:

• acquiring information describing a shape of a treatment target;
• determining locations inside the shape using a crystalline structure model;
• determining locations of spots in the treatment target, the locations of the spots corresponding to the locations inside the shape determined using the crystalline structure model, and the locations of the spots being for spot scanning with a radiation beam;
• and
• storing, in a memory of the computer system, the locations of the spots in a radiation treatment plan.

A computer-implemented method used for radiation treatment planning, the computer-implemented method comprising:

• acquiring information of a treatment target, the information describing a shape of the treatment target;
• determining locations inside the shape using a crystalline structure model;
• determining locations of spots in the treatment target, the locations of the spots corresponding to the locations inside the shape determined using the crystalline structure model, and the locations of the spots being for spot scanning with a radiation beam;
• and
• storing the locations of the spots in a radiation treatment plan.