http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
비촉지 유방병소에 대한 유방촬영술 및 유방초음파 유도하로 위치 결정한 생검의 결과와 차이
조병제,이경상,Cho, Byung-Jae,Lee, Kyung-Sang 대한영상의학회 2002 대한영상의학회지 Vol.46 No.1
목적: 비촉지 유방병소에 대한 유방촬영술 및 유방초음파 유도하로 위치 결정한 생검의 결과와 차이를 알아 보고자 하였다. 대상과 방법: 1999년 1월부터 2000년 12월까지 비촉지 유방병소에 대한 생검 441예 중 유방촬영술 유도하의 생검은 241예, 유방초음파 유도하의 생검은 200예, 유방촬영술 유도하의 생검 대상은 군집된 미세석회화(195/241,80.9%), 종괴(22/241,9.1%), 종괴 및 석회화(24/241, 10.0%),유방초음파 유도하의 생검은 거의 모두 초음파 검사상 종괴를 보였고 그 중에는 석회화를 포함한 것도 있었으며, 군집된 미세석회화 단독으로 보인 2예도 일단 유방촬영술상 그 존재가 확인된 후 였다. 생검은 유방촬영술 및 유방초음파의 유도하에서 그 병소 부위에 가역만곡강선으로 정확한 위치를 정하고 바로 외과적 절제 생검을 시행하였다. 결과: 생검을 실시한 441예 중 악성으로 판명된 것은 68예(15.4%)였고, 유방촬영술 유도하의 생검은 46예(19.1%)에서 유방암으로 나타났고,이 중 비침습성암종은 28예(60.9%)였고, 관상피내암은 25예,관상피내암과 소엽상피내암이 함께 있었던 1예, 관상피내암 및 미세침습 2예였고, 유방초음파 유도하의 생검에서는 22예(11.0%)에서 유방암으로 나타났고, 이 중 비침습성암종은 5예(22.7%)였다. 결론: 유방촬영술 유도하의 생검은 주로 군집된 미세석회화를, 유방초음파 유도하의 생검은 종괴를 대상으로 하기 때문에 악성으로 나타난 비율과 각각의 비침습성암종의 차이를 알 수 있다. Purpose: To evaluate the results of mammography and ultrasound-guided localization biopsy of nonpalpable lesions, and the differences between them. Materials and Methods: Between January 1999 and December 2000, localization biopsies of 441 nonpalpable breast lesions were performed immediately after preoperative localization using a wire hook. Localization was mammography guided in 241 cases and ultrasound guided in 200. The former group included clustered microcalcifications(195/241, 80.9%), mass (22/241,9.1%) and mass with microcalcifications (24/241, 10.0%), while the latter were almost all mass, or mass with microcalcifications (198/200, 99%). Only two lesions (1%) showed clustered microcalcifications only, and these were previously demonstrated at mammography. Results: Overall, 68 lesions (15.4%) were confirmed as malignancy. Forty-six of 241 mammography guided localization biopsies indicated malignancy: there were 28 noninvasive carcinomas (60.9%), 25 ductal cancers in situ (DCIS), one DCIS combined with lobular cancer in situ (LCIS), and two DCIS combined with microinvasion. Twenty-two of 200 ultrasound-guided localization biopsies revealed malignancy; five such lesions (22.7%) were noninvasive carcinomas. Conclusion: The malignancy rate and proportion of noninvasive breast cancers indicated by mammography and ultrasound-guided localization biopsy differed, and this was because the former involved mainly microcalcifications and the latter, masses.
랩스케일 브레이크 다이나모 메터를 이용한 패드각도 및 음의 기울기에 따른 스퀼 소음 실험 연구
남재현(Nam, Jae-Hyun),조병제(Cho, Byung-Jae),강재영(Kang, Jae-Young) 한국산학기술학회 2013 한국산학기술학회논문지 Vol.14 No.7
본 연구에서는 회전속도, 브레이크 압력 제어가 가능한 브레이크 다이나모메타를 제작하여 스퀼 소음 실험 을 실시하였다. 브레이크 패드는 각각 34°,30°,26°로 가공하여 패드 각도에 따른 스퀼 발생 조건과 음의 기울기 발생 에 따른 스퀼 연관성을 연구 하였다. 각도에 따라 특정한 회전속도와 브레이크 압력에서 스퀼이 발생하였으며, 각도 에 상관없이 하모닉 성분을 가지는 특정 주파수 소음을 발견하였다. 햄머링 테스트 및 유한요소해석을 통해서 특정 주파수는 In-plane모드 성격을 갖고 있으며, 패드 각도에 둔감한 모드임을 밝혀냈다. In this study, squeal noise test was conducted by using the lab-scaled brake dynamometer. Squeal conditions with respect to the angle of the brake pads (34°30°26°) and negative slope, were studied. Squeal frequency of the In-plane-like mode was confirmed by hammering test and finite element analysis. This Squeal mode was difficult to control by the pad angle variation. Also the squeal sound was found to be periodic signal which has higher harmonic components. Squeal noise is independent of the negative slope. It implies that squeal noise can reach the stick-slip oscillation.
단순 유방촬영술상 동반되는 종괴 없이 보이는 군집성 미세석회화 : 양성과 악성의 예측
한윤희,도영수,조병제,한헌,최연현,박정미,한부경,오훈일,김기환,진수일,Han, Yoon-Hee,Do, Young-Soo,Cho, Byung-Jae,Han, Heon,Choi, Yeun-Hyeun,Park, Jung-Mi,Han, Boo-Kyung,Oh, Hoon-Il,Kim, Ki-Hwan,Chin, Soo-Yil 대한영상의학회 1996 대한영상의학회지 Vol.35 No.5
Purpose : The purpose of this study is to evaluate the accuracy of differentiation between benign andmalignant clustered microcalcifications without mass on mammogram. Material and Methodes : Fourty six mammogramsof 44 patients showing clustered microcalcifications without mass were interpreted blindly by five independentobservers majoring in breast imaging from different institutions. Twenty two were malignant (10 infiltratingductal carcinomas, 12 intraductal carcinomas) and 24 were benign (all fibrocystic disease). The observers judgebenignancy or malignancy of microcalcifications. The authors assess the accuracy of differential diagnosis ofclustered microcalcifications. Result : Of 24 cases proved benign microcalcifications, five radiologists correctlyinterpreted 20 on average as benign and of malignant 22 cases, 16 on average were correctly interpreted asmalignant. The diagnostic accuracy of malignant microcalcifications was 71.8% on average(63.6%~81.8%) and thediagnostic accuracy for benign microcalcifications was 83% on average(71%~ 92%). It was 9 among total 46 casesthat were misinterpreted by more than three radiologists. Among these 9 cases, malignant microcalcifications thathad been misinterpreted as benign were seven, benign microcalcifications misinterpreted as malignant were two.Conclusion : The diagnostic accuracy of clustered malignant microcalcifications(71.8%) without mass on mammogramwas lower than that of benign microcalcifications(83.3%). So, in case of suspected malignant microcalcification onmammogram, it is preferable that along with magnification view, histopathologic confirmation by core biopsy mustbe obtained.
건강검진 수진 여성에서 초음파검사를 이용한 갑상선결절의 유병률
임창훈,오한진,정호연,한기옥,장학철,윤현구,한인권,한병희,이경상,조병제 대한내분비학회 2002 Endocrinology and metabolism Vol.17 No.2
Background: Thyroid nodules are commonly found in clinical practice, and the recent development of thyroid ultrasonography has allowed for the detection of small nodules previously undetectable by routine palpations. Since previous studies on thyroid ultrasonography have been focused on patients with known thyroid disorders, we aimed to determine the prevalence of thyroid nodules in a female population. Methods: We studied women in the age range 30 to 70 years visiting the health promotion center at Samsung Cheil Hospital for routine health check-ups. After excluding patients with previous thyroid disorders, 1300 women where selected to undergo thyroid ultrasonography for the detection of the presence of thyroid nodules. If nodules were found, their size and numbers were recorded, and these data correlated with the patients age. Results: Of the 1300 subjects, thyroid nodules were detected in 490 (37.7%) with their prevalence (p=0.009), and that of multinodularity of thyroid nodules (p=0.001), increasing with the increasing age of the patients (Age 30 to 39: 30.8%, 40 to 49: 37.0%, 50 to 59: 41.5% and 60 to 69: 65.2%). Among these study subjects, nodules larger than 15 mm in size were detected in 29 and after performing fine needle aspirations on 18 nodules, 17 were found to be benign, with 1 papillary carcinoma, which required a total thyroidectomy. Conclusion: The prevalence of thyroid nodules in our female study population was 37.7%, with their prevalence, and that of multinodularity of thyroid nodules, increasing with increased age