Abstract: A method for generating a radiation therapy plan is provided. The method includes acquiring a first radiation therapy plan for an object that is to be treated with radiation therapy in a first radiation therapy mode; in response to a dose conversion operation on the first radiation therapy plan, acquiring a first effective dose field obtained by dose conversion of the first radiation therapy plan, the first effective dose field being used to evaluate effect of radiation therapy based on the first radiation therapy plan on different radiation volumes in the object; and generating a second radiation therapy plan for the object in a second radiation therapy mode using the first effective dose field as a basic dose field.

Abstract: Provided is a method for generating an arc treatment plan. The method for generating the arc treatment plan includes: generating a plurality of sub-regions by partitioning a region of interest based on an irradiation duration corresponding to the region of interest in a target volume; and generating the arc treatment plan for the target volume based on the plurality of sub-regions and irradiation durations corresponding to the plurality of sub-regions; wherein the irradiation durations corresponding to the plurality of sub-regions are all less than or equal to a predetermined value, a sum of the irradiation durations corresponding to the plurality of sub-regions is equal to an irradiation duration corresponding to the region of interest, and irradiation positions corresponding to the plurality of sub-regions are the same as an irradiation position corresponding to the region of interest.

Abstract: Provided is a Monte Carlo simulation-based parallel dose calculation method, a computer device, and a storage medium. The method includes: acquiring sampled particles by sampling according to a radiation source model of a device, wherein information of the sampled particles includes positions, movement directions, energies, and weights of the sampled particles; stochastically generating a plurality of new positions in a region of interest along the movement directions of the sampled particles; and simulating transport processes of particles in parallel at the plurality of new positions using same particle information and same trajectory data, wherein the particle information used at the plurality of new positions is the information of the sampled particles.

Abstract: The present disclosure discloses a method for generating a treatment plan. The method includes: acquiring a first image of a target object, wherein the first image does not contain positioning information of the target object; generating a first treatment plan for the target object based on the first image; acquiring a second image of the target object, wherein the second image contains the positioning information of the target object; registering the first image and the second image; and generating a second treatment plan by updating the first treatment plan in response to a registration result.