Methods, systems, and storage media for obtaining energy spectra

A system for obtaining an energy spectrum, comprising:

• a curve acquisition module, configured to obtain a first depth dose curve corresponding to a first energy and a second depth dose curve corresponding to a second energy;
• a dose value acquisition module, configured to obtain, based on the first depth dose curve and the second depth dose curve, a first set of dose values and a second set of dose values along a depth direction, respectively;
• a relationship determination module, configured to determine a relationship between the first depth dose curve and the second depth dose curve based on the first set of dose values and the second set of dose values;
• a first energy spectrum acquisition module, configured to obtain a first energy spectrum corresponding to the first depth dose curve;
• and
• a second energy spectrum determination module, configured to determine a second energy spectrum corresponding to the second depth dose curve based on the first energy spectrum and the relationship between the first depth dose curve and the second depth dose curve.

A device for obtaining an energy spectrum, comprising at least one processor and at least one storage device, wherein the at least one storage device is configured to store computer instructions, the at least one processor is configured to execute at least a portion of the computer instructions to implement the method for obtaining an energy spectrum comprising:

• obtaining a first depth dose curve corresponding to a first energy and a second depth dose curve corresponding to a second energy;
• obtaining, based on the first depth dose curve and the second depth dose curve, a first set of dose values and a second set of dose values along a depth direction, respectively;
• determining a relationship between the first depth dose curve and the second depth dose curve based on the first set of dose values and the second set of dose values;
• obtaining a first energy spectrum corresponding to the first depth dose curve;
• and
• determining a second energy spectrum corresponding to the second depth dose curve based on the first energy spectrum and the relationship between the first depth dose curve and the second depth dose curve.