非穩定光源下之皮膚顏色變化監測系統及方法

專利類型

發明

專利國別 (專利申請國家)

中華民國

專利申請案號

107137078

專利證號

I 689895

專利獲證名稱

非穩定光源下之皮膚顏色變化監測系統及方法

專利所屬機關 (申請機關)

國立臺灣大學

獲證日期

2020/04/01

技術說明

口腔癌是現今發生率及死亡率成長速度最快的癌症，其死亡數在兩性的癌症十大死因已竄升到第五位。對於口腔癌病患而言, 游離皮瓣手術是現今主要的治療方式，成功率已達九成以上，然而有少數皮瓣在術後一周內會發生血循障礙。在過去發生阻塞的案例中，於術後二十四小時內發生阻塞的比例更高達八成，再加上自發生阻塞到執行再次手術的時間間隔越長，就會大幅提高第二次的手術失敗率，因此術後監控極為重要。 為了解決上述問題，考量到皮瓣發生阻塞時可能會有發紫腫脹等現象，加上護理人員每隔一段時間會替病患翻身或是病房內燈光的變化，本技術開發了一建立在一以機器手臂內建的可見光相機為監控主體之演算法，透過因素分析演算法針對可見光影像中皮瓣區域之RGB數值及周圍正常組織之RGB數值，以估算出環境光線因素，並且將其扣除，以取得皮瓣真實的色彩變化，進而偵測皮瓣可能發生血管阻塞的時間。 Oral cancer is a disease with the fastest growing of mortality rate currently which ranks the fifth place among the top ten causes of cancer in both genders. For the patients with oral cancer, the free flap surgery is most important treatment, and the success rate of it can achieve more than 90%. However, there are still several flaps having circulatory compromise after surgery, and the success rate of reoperation will become lower with the belated detection of circulatory compromise. Therefore, the free flap monitoring is very important for early detection of circulatory compromise. In order to solve the problem above, this technique developed an algorithm based on a monitoring system of a robot arm with visible camera to monitor the color change when the flap having circulatory compromise. After the elimination of common factor, estimated by our factor analysis algorithm, between the flap and surrounding normal tissue, the real color change of flap will be obtained and can be used to detect the occurrence of circulatory compromise.

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