Bed system for radiation therapy

A bed system for radiation therapy including a bed to hold a patient stationary when the radiation therapy treatment is performed by applying radiation irradiated from an irradiating section to a diseased part of the patient, the bed system comprising:

• an x-axis direction parallel transfer means for moving the bed in an x-axis direction relative to the bed;
• a z-axis direction parallel transfer means for moving the bed in a z-axis direction perpendicular to the x-axis direction;
• a y-axis direction parallel transfer means for moving the bed in a y-axis direction relative to the bed, the y-axis direction being perpendicular to the x-axis and z-axis directions;
• a relative isocentric rotation means for rotating the bed about an isocentric axis that designates a height direction of the patient;
• a rolling a rotation means for rotating the bed about a rolling axis that designates a central axis of the patient;
• and
• a pitching rotation means for rotating the bed about a pitching axis perpendicular to the central axis of the patient.