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정수택,지창하,정재용,김주홍,조혜제,노충희 인제대학교 1992 仁濟醫學 Vol.13 No.2
고환주위 횡문근육종은 드문 질환으로, 저자들은 최근 후복막강내 전이가 있었던 20세 환자에 대해서 수술, 화학요법 및 방사선 치료의 병합요법을 시행으로 16개월째 치료중에 있다. Rhabdomyosarcoma, derived from the unsegmented undiffentiated mesoderm, accounts for approximately 5~10% of all solid tumors in children. It is the most common soft tissue sarcoma in children younger than 15 years. Survival for children with rhabdomyosarcoma, like that for Wilms' tumor, has been greatly improved since the incorporation of chemotherapy into treatment program. With current miltidisciplinary regimens, the overall 2 year survival rate for children with rhabdomyosarcoma approaches 70%. A case of rhabdomyosarcoma with retroperitoneal metastasis is reported. A 20-year-old male was hospitalized because of scrotal mass, which was more enlarged after blunt trauma. At operation, paratesticular mass extending along the spermatic cord was removed. Pathologic finding of the tumor revealed rhabdomyosarcoma of embryonal type. Abdominal CT showed retroperitoneal metastasis. The patient has been treated with combined modality therapy for 16 months.
웨이블렛 영역에서 선형확장과 인터리빙에 의해 필터링 공격에 강인성을 갖는 영상 워터마킹
이구영,정수택,김정화 조선대학교 전자정보통신연구소 2002 電子情報通信硏究所論文誌 Vol.5 No.1
This paper presents an efficient technique for digital watermark robustness against filtering and scaling attack. It inserted the watermark in low frequency portion of the wavelet-transformed image and it uses from communication the interleaving method in the proposed method it applied. The Interleaving method orders a data bit row at schedule unit the rearrange. With that result in instantaneous noise when the part bit in data bit row center is lost, it the recover it does as a role. And in order watermark to do the coefficient values of low frequency domain from in transformed domain of 4 portion of original image it does and every the pixel the linearly it does and bit it expands. Experimental results demonstrate the high robustness of the method to such image degradations as Lowpass filtering, Median filtering and Rescaling transform.