System and method for determining the position of objects in a radiation room for radiation therapy

摘要

A system and method for determining the position of objects in a radiation room for radiation therapy comprises several room lasers arranged in the radiation room, each of which is designed for patient positioning to project at least one laser line onto the surface of a patient located on a patient table in the radiation room. At least one camera detects at least one laser line projected onto the surface of the patient by at least one of the room lasers, and an evaluation and control apparatus determines the coordinate points along the laser line projected onto the surface of patient during a radiation procedure based on measurement values detected by the camera through a real-time triangulation process and compares them with target coordinate points. The coordinate points determined during the radiation procedure may be saved for documentation of the radiation procedure.

主权项

1. A system for determining the position of objects in a radiation treatment room for radiation therapy, comprising:
several room lasers, each of which is arranged to project at least one laser line onto a surface of a patient located on a patient table; at least one camera, each of which is arranged to detect at least one laser line projected onto the surface of the patient by at least one of the several room lasers; and an evaluation and control apparatus configured to:
determine first coordinate points along a laser line projected onto the surface of the patient during a first radiation treatment procedure based on measurement values detected by the at least one camera through a first real-time triangulation process, and compare them with target coordinate points for patient positioning, the evaluation and control apparatus including a memory device in which the first coordinate points determined during the first radiation treatment procedure are saved for documentation of the first radiation treatment procedure, and the first radiation procedure using a target dose; anddetermine second coordinate points along a laser line projected onto the surface of the patient during a second radiation treatment procedure based on measurement values detected by the at least one camera through a second real-time triangulation process, and compare them with target coordinate points for patient positioning, the evaluation and control apparatus configured to use the first coordinate points saved in the memory device to modify the target dose for the second radiation treatment procedure of the patient.