Systems and methods for providing medical information and for performing a medically-related process using augmented reality technology

A method performed by an apparatus in a medical process that involves a particle accelerator, comprising:

• obtaining, by a processing unit of the apparatus, treatment plan information;
• obtaining, by the processing unit of the apparatus, a viewing direction of a user of the apparatus;
• processing, by the processing unit of the apparatus, the treatment plan information based on the viewing direction of the user of the apparatus to create a graphical representation of the treatment plan information for presentation to the user;
• and
• displaying the graphical representation in a screen of the apparatus.