The object of this invention is to solve the problem with a known apparatus that is incapable of allowing a visual evaluation of the amount of an active ray on skin, by providing an apparatus for assisting the evaluation of the amount of active ray on skin, which enables the operator to accurately and directly appraise the amount of the active ray to be applied on skin in establishing a therapy plan.The apparatus (320) for assisting the evaluation of the amount of active ray on skin has a skin region profile generation unit (304) for generating skin region information including boundary ordinates for a skin region based on the input image data (306) when planning an active ray therapy for a patient, and a display computing unit (305) for generating display data (309) which draws the amount of active ray on skin to be applied in a skin region based on the active ray amount distribution data (311) computed by an active ray amount distribution computing unit (303) of a therapy planning device (102), and displays the drawn active ray amount on skin in a prescribed display format.本發明提供一種皮膚放射線量評估支援裝置,目的在於解決無法視覺性地進行屬於相對於皮膚之放射線量之皮膚放射線量的評估之問題,而得到在治療計畫作成中能正確且直覺地掌握皮膚放射線量之皮膚放射線量支援裝置。該皮膚放射線量支援裝置(320)係具備:皮膚區域輪廓作成部(304),依據在進行相對於患者之放射線治療的治療計畫時所輸入之圖像資料(306),而作成包含皮膚區域的邊界座標之皮膚區域資訊;以及顯示計算部(305),依據治療計畫裝置(102)的放射線量分布計算部(303)所計算之放射線量分布資料(311)及皮膚區域資訊,抽出皮膚區域之皮膚放射線量,並作成使該抽出之皮膚放射線量顯示為預定的顯示形式之顯示資料(309)。(本案須組合第1、2圖才能顯示其特徵)101‧‧‧CT裝置102‧‧‧治療計畫裝置103‧‧‧參數104‧‧‧治療裝置105‧‧‧控制裝置106‧‧‧加速器107‧‧‧支架108‧‧‧照射噴嘴109‧‧‧治療床301‧‧‧輸入輸出部302‧‧‧組織區域設定部303‧‧‧放射線量分布計算部304‧‧‧皮膚區域輪廓作成部305‧‧‧顯示計算部306‧‧‧圖像資料307‧‧‧抽出資料309‧‧‧顯示資料310‧‧‧照射條件311‧‧‧放射線量分布資料320‧‧‧皮膚放射線量評估支援裝置
