IRRADIATION CONTROL DEVICE, RADIOTHERAPY SYSTEM, IRRADIATION CONTROL METHOD, PROGRAM AND STORAGE MEDIUM

To more correctly control irradiation of a radiation beam to a subject from a radiation beam source.SOLUTION: An irradiation control device 20 and an irradiation control method generate a plurality of shift images by shifting a perspective image with a prescribed pitch width within a prescribed rang...

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Bibliographische Detailangaben
Hauptverfasser:	SASAKI TAKESHI, ARAI HIROBUMI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	DIAGNOSIS ELECTROTHERAPY HUMAN NECESSITIES HYGIENE IDENTIFICATION MAGNETOTHERAPY MEDICAL OR VETERINARY SCIENCE RADIATION THERAPY SURGERY ULTRASOUND THERAPY
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Zusammenfassung:	To more correctly control irradiation of a radiation beam to a subject from a radiation beam source.SOLUTION: An irradiation control device 20 and an irradiation control method generate a plurality of shift images by shifting a perspective image with a prescribed pitch width within a prescribed range in a head-tail direction, calculate a normalization correlation coefficient between each of the plurality of shift images and a DRR image, and decide a shift amount of the shift image corresponding to the maximum normalization correlation coefficient in the plurality of normalization correlation coefficients as a positional deviation amount.SELECTED DRAWING: Figure 3 【課題】射線ビーム源から被検体への放射線ビームの照射をより正確に制御する。【解決手段】照射制御装置２０及び照射制御方法では、透視画像について、頭尾方向の所定範囲内で所定の刻み幅でシフトさせることにより、複数のシフト画像を生成する。次に、複数のシフト画像の各々について、ＤＲＲ画像との正規化相関係数を計算する。次に、複数の正規化相関係数のうち、最大の正規化相関係数に対応するシフト画像のシフト量を、位置ずれ量に決定する。【選択図】図３