1. A method of positioning a patient for treatment using a particle therapy system, comprising: associating fiducials with the patient; using a first imaging system located at an imaging position to capture a first image of the fiducials and of an irradiation target while the patient is on a treatment couch, the imaging position being in a treatment room where treatment using the particle therapy system is to be performed; moving the treatment couch while the patient is on the treatment couch from the imaging position toward a treatment position at which the treatment using the particle therapy system is to be performed, the treatment position being different from the imaging position and being in the treatment room; following movement of the treatment couch, using a second imaging system to capture a second image of the fiducials in the treatment room while the patient is on the treatment couch; determining locations of the fiducials in the treatment room based on both the first image and the second image; determining a location of the irradiation target relative to the particle therapy system based on locations of the fiducials in the treatment room and in the first image; and moving the treatment couch into the treatment position in the treatment room based on the location of the irradiation target; wherein the patient remains on the treatment couch during capturing the first image, through moving the treatment couch toward the treatment position, through capturing the second image, and through moving the treatment couch into the treatment position.