| 摘要 |
A method including irradiating a target, which is located in a patient supported by a movable table, with a radiation beam emanating from a radiation source located in a movable gantry, and positioning the gantry and the table so as to maintain adequate clearance, wherein a clearance is defined as a distance between the gantry and the patient or the table, whichever is smaller, and wherein adequate clearance is defined as a clearance that alleviates a risk of a collision between the gantry and the patient or the table during movement of the gantry.
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