| 摘要 |
A patient positioning system comprises a monitor capable of displaying, in scaled-down size, a reference image and a comparative image that are given as image information containing an affected area in the body of a patient, an input device for inputting reference points on the reference image and the comparative image displayed on the monitor, and a computing unit for setting a computing region by enlarging the inputted reference point depending on a scaling-down factor of the monitor, setting a representative point in the set computing region, and computing a patient shift amount based on a position of the representative point in the reference image and a position of the representative point in the comparative image. An improvement in positioning accuracy and a cut in positioning time can be realized at the same time.
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