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뇌하수체선종 환자에서 감마나이프를 이용한 정위적 방사선 치료
차봉수(Bong Soo Cha),이현철(Hyun Chul Lee),최동훈(Dong Hoon Choi),송영득(Young Duk Song),이은직(Eun Jig Lee),임승길(Sung Kil Lim),박용구(Yong Gu Park),김경래(Kyung Rai Kim),정상섭(Sang Seop Chung),허갑범(Kap Bum Huh),정윤석(Yoon Sok 대한내과학회 1995 대한내과학회지 Vol.49 No.1
Objectives : Stereotactic radiosurgery using gamma-knife in adjunct to transsphenoidal pituitary surgery is recently being used for treatment of pituitary adenomas and it poses as an effective and safe treatment modality. We present our experience and preliminary results of gamma-knife treatment of the patients with pituitary adenomas. Methods: Between May, 1992 and March, 1994, 20 patients with pituitary adenoma were treated with gamma-knife at Yonsei Medical Center. Among them, 15 cases who have had follow-up for more than 6 months were included in our study. 13 of 15 cases had endocrinologically active tumors(4 prolactin secreting, 4GH secreting, 5 ACTH secreting), and two patients had clinically non-functioning adenomas. Hormonal and radiological studies and clinical features were followed up. Results: After gamma-knife surgery, the hormonal level was decreased in eleven of thirteen patients with functioning pituitary adenomas and the size of tumor was decreased in seven of fifteen patients and eleven of fifteen patients were improved clinically. There was more favorable results in Cushing's disease than in other pituitary adenomas. There was no severe complication associated with gamma-knife surgery, Conclusion : Based on our initial clinical experience, we believe that gamma-knife stereotactic radio surgery is safe and effective alternative to conventional neurosurgery in selected patients with pituitary adenomas and further study might be warranted.
하봉수 ( Bong-soo Ha ),홍원기 ( Won-kee Hong ),차경애 ( Kyung-ae Cha ) 한국정보처리학회 2006 한국정보처리학회 학술대회논문집 Vol.13 No.2
무선 센서네트워크 기술은 유비쿼터스(Ubiquitous) 컴퓨팅을 구현하기 위한 핵심 기술로 인식된다. 컴퓨터가 사용자 눈에 보이지 않아도 언제 어디서나 사용 가능한 유비쿼터스 컴퓨팅을 실현하기 위해서는 무선 센서노드를 이용한 상황정보와 위치정보가 필수적이다. 하지만 무선 센서네트워크를 구성하는 하드웨어는 저전력, 저가, 소형의 특성을 가지고 있으므로, 한정된 자원을 이용하여 위치정보를 얻는데 어려움이 크다. 본 논문에서는 이러한 무선 센서네트워크의 특성에 적합한 위치인식 기법으로 근거리 무선통신인 Zigbee(IEEE 802.15.4)기반의 영역추정기법과 RSSI정보를 이용한 좌표 정합(整合)기법을 통하여 위치정확도와 위치측정시간을 개선한 위치정보 획득기법을 제안하였다. 제안하는 알고리즘은 전체 테이블에서 RSSI를 이용한 좌표정합 기법보다 약 14.46%정확도가 증가하였으며, 영역별로 신뢰성이 증가된 RSSI 좌표 테이블 구축 시 정확도는 더 증가할 것으로 예상된다.
Somatostatin Receptor Scan 으로 전이 여부를 확인한 갑상선 수질암 1 예
송민경(Min Kyung Song),차봉수(Bong Soo Cha),송영득(Young Duk Song),임승길(Sung Kil Lim),이현철(Hyun Chul Lee),허갑범(Kap Bum Huh),정윤석(Yoon Sok Chung),김현만(Hyeon Man Kim) 대한내과학회 1995 대한내과학회지 Vol.49 No.4
Medullary thyroid carcinoma accounts for 5% to 10% of all thyroid malignancies and more aggressive than papillary or follicular thyroid malignancies. Recently we have experienced a fourty-year-old male patient with multiple neck node enlargement and intractable diarrhea. Plasma calcitonin and serum carcinoembryonic antigen levels were elevated. Total thyroidectomy and modified radical neck dis- section were perfomed, but distant metastases were documented by somatostatin receptor scan, and sub- cutaneous injection treatment of octreotide were tried in this patient.
폐와 위장의 전이성 석회화를 동반한 부갑상선 선종 1 예
송건훈(Kun Hoon Song),변영섭(Young Sud Byun),차봉수(Bong Soo Cha),이지현(Ji Hyun Lee),남문석(Moon Suk Nam),송영득(Young Duk Song),임승길(Sung Kil Lim),이현철(Hyun Chul Lee),허갑범(Kap Bum Huh) 대한내과학회 1996 대한내과학회지 Vol.51 No.3
Metastatic calcification of soft tissues due to hypercalcemia is a well-recognized complication of various malignancies and renal failure. It results from metabolic derangement in which calcium salts are deposited in otherwise normal tissuel. The calcific process principally affects lungs, stomach, kidneys and other soft tissues. With advance of nuclear imaging modalities, metastatic calcification can be detected earlier so that appropriate therapy may be instituted. A case of parathyroid adenoma with metastatic pulmonary and gastric calcification is presented. She showed intense concentrations of bone-seeking radionuclide( 99mTechnetiurn) in both lungs and stomach on routine bone scan. Renal function of the patient was moderately impaired, Right inferior parathyroidectomy was performed. Her serum calcium concentration decreased postoperatively and had to be maintained with orally administered calcium and aldactazide. After the operation the clinical course has been uneventful. Follow-up bone scan performed lo days following the operation revealed persistence of lung uptake despite restoration of normal blood calcium concentration, but disappearance of gastric uptake. So we report the case of parathyroid adenoma complicating metastatic pulmonary and gastric calcification with review of literature.