담낭천공의 CT 소견

성수옥 대한영상의학회 1995 대한영상의학회지 Vol.33 No.2

Purpose : To evaluate the usefulness in diagnosing the gallbladder perforationMaterials and Methods : CT scans of surgically proved 11 cases of gallbladder perforation were retrospectively reviewed. CT findings analyzed were luminal diameter of GB, GB wall thickness and configuration, presence or absence of fluid collection in the pericholecystic or intraperitoneal space, and observation of pericholecystic anatomic structures. All patients under went cholecystectomy, and surgical findings were also compared. Results : The GB was distended in 6 cases(55%with a range of 4.0-7.5cm, mean:5.2cm). GB wall was thickened in most cases(9/11, 82%) with homogeneous(n=7) orinhomogeneous(n=2) enhancement. At the sites of perforation, focal defect or contour bulging was seen in the GBwall in 3 cases. In 2 cases with gangrene, GB wall showed loss of normal contour with mottled contrast enhancement. Pericholecystic or intraperitoneal fluid collection was noted in 9 cases(82%), especially in the region of perforation. In all cases, there was evidence of diffuse infiltration in the pericholecystic space, omentum or mesentery. Other findings included cholecystoenteric fistula in 1 case, and intrahepatic or intraperitoneal abscess formation in 2 cases. Conclusion : CT is useful in correct diagnosis of gallbladder perforation.

두개강내 고형성 종양의 H-1 자기공명분광법

성수옥,장기현,한문희,연경모,한만청 대한자기공명의과학회 1997 Investigative Magnetic Resonance Imaging Vol.1 No.1

목적: 두개강내 고형성 종야에서 병리조직학적 진단과 악성도에 따라 특징적 H-1자기공명분광(MRS) 양상이 나타나는지를 알아보고자 하였다. 대상 및 방법: 고형성 뇌종양 환자 81명(저등급 교종 17예, 고등ㅇ급 교종 31예, 림프종 9예, 뇌수막종 8예, 신경세포종 4예, 수아세포종 3예, 원시성신경외배엽종 3예, 전이암 2예, 기타 4예)을 대상으로 생체내 MRS를 시행하여 스펙트럼을 분석하였다. MRS는 1.5T 장치를 사용하여 PRESS기법으로 TR/TE 2000/270msec, VOI $2{\times}2{\times}2cm^3$로 얻었다. 대사 산물의 공명(resonance) 분석은 N-acetyl aspartate(NAA)/Creatine complix(Cr)비, Choline complex(Cho)/Cr비, Lactate(Lac)/Cr비를 구하였으며, 기타 산물에 대하여는 기존의 문헌에 기초하여 존재 유무를 분석하였다. 결과: 모든 고형성 뇌종양에서 NAA는 감소하고, Cho과 lactate는 증가하였다. Cr은 증가하거나 감소하는 등 다양한 결과를 보였다. 모든 종야에서 NAA/Cr이 감소한 반면, Cho/Cr과 Lac/Cr은 증가하였다. 고등급 교종에서는 평균 Cho/Cr과 lactate/Cr이 각각 저등급 교종에 비해 모두 유의하게 높았다(Cho/Cr ; $2.4{\pm}0.7{\;}vs.{\;}1.7{\pm}0.8,{\;}P<0.05,{\;}lactate/Cr{\;};{\;}1.3{\pm}1.9{\;}vs.{\;}0.4{\pm}0.6$, P<0.05). 그러나 NAA/Cr은 유의한 차이가 없었다. 뇌수막종과 신경세포종, 수아세포종에서 Cho/Cr이 고등급 교종의 수준 이상으로 높았다. 결론: H-1 MRS는 고형성 뇌종에서 저등급과 고등급 교종의 감별에 유용하게 이용될 수 있으나, 교종이외의 고형성 양성종양에서도 고등급 교종과 같은 양상을 보이므로 한게가 있다고 생각된다. Purpose: To assess the ability of in vivo H-1 MRS to determine the degree of malignancy and to characterize the histopathologic type of intracranial solid tumors. Materials and Methods: In vivo H-1 MR spectra of the pathologically-proven 81 intracranial soild tumors (low-grade glioma 17 cases, high-grade glioma 31 cases, lymphoma 9 cases, meningioma 8 cases, central neurocytoma 4 cases, medulloblastoma 3 cases, PNET 3 cases, metastasis 2 cases, others 4 cases) were analyzed. H-1 MR spectroscopy was performed on a 1.5T MR unit using PRESS sequence with a TR of 2000ms, a TE of 270 or 135ms and a voxel size of $2{\times}2{\times}2cm^3$ for all spectra. N-acetyl aspartate (NAA)/Creatine complex(Cr), Choline complex (Cho)/Cr, and lactate (Lac)/Cr ratios were measured on the peak heights of each resonance and compared among the different tumors. Results: All intracranial solid tumors demonstrated decreased NAA, elevated Cho and lactate, and variable Cr levels. All tumors showed increased Cho/Cr and Lac/Cr, whereas NAA/Cr level was decreased. Mean Cho/Cr and Lac/Cr ratios were significantly higher in high-grade gliomas than in low-grade gliomas. However, NAA/Cr ratio showed no significant difference between low-grade and high-grade gliomas. Very high Cho peaks were seen in lymphomas, meningiomas, medulloblastomas, and neurocytomas in addition to high-grade gliomas. Conclusion: H-1 MRS may be useful in differentiating between low-grade and high-grade gliomas, however cannot characterize the histologic types or subtypes of tumors.

다낭성 난소 질환에서 발생된 자궁내막암 : 1예 보고

성수옥 대한영상의학회 1996 대한영상의학회지 Vol.35 No.6

Endometrial carcinoma usually occurs in postmenopausal women ; less than 5% occurs in women under the age of40. Up to one quarter of endometrial carcinoma patients below this age have PCO(polycystic ovary disease, Stein-Leventhal syndrome). The increased incidence of endometrial carcinoma in patients with PCO is related tochronic estrogenic stimulation. We report MR imaging in one case of endometrial carcinoma occuring in a 23 yearold woman with PCO and had complained of hypermenorrhea for about three years. On T2-weighted MR image theendometrial cavity was seen to be distended with protruded endometrial masses of intermediate signal intensity, and the junctional zone was disrupted beneath the masses. Both ovaries were best seen on T2-weighted MR imagingand showed multiple small peripheral cysts and low signal-intensity central stroma.

대동맥류와 박리성 대동맥류이 수술후 CT 소견

성수옥 대한영상의학회 1995 대한영상의학회지 Vol.33 No.5

Purpose : To assess the postoperative CT findings of aortic aneurysms or dissections treared byresection-and-graft replacement or continuous-suture graft-inclusion technique Materials and Methods : We reviewedpostoperative follow-up CT findings of 14 patients, 19 cases. There were 8 patients(10 cases) of aortic aneurysmand 6 patients(9 cases) of aortic dissecton which involved the thoracic aorta in 9 patients(13 cases) andabdominal aorta in 5 patients(6 cases). The interval of follow-up after operation was from 9 days to 2 year 9months. On CT scans, we analyzed the appearance of graft materials, differences of CT findings between twosurgical techniques, and normal or abnormal postoperative CT findings. Results : Most of grafts appeared ashyperdense ring on precontrast scan, and all of them were not seperated from aortic lumen on postcontrast scan. OnCT findings of patient who were operated by continuous-suture graft-inclusion technique, perigraft thrombus wasconcentrically located with sharp demarcation by native aortic wall and its density was homogeneous, but in casesof those operated by resection-and-graft replacement, perigraft hematoma was eccentrically located with indistinctmargin and its density was heterogeneous and native aortic wall could not be delineated. In patients withoutcomplication, perigraft thrombus or hematoma(15 cases), perigraft calcification(11 cases), residual intimal flap(6cases), graft deformity(4 cases), perigraft air(2 cases) and reconstructed vessels(1 case) are noted. And in onepatient with complication, perigraft flow was noted with more increased perigraft hematoma. Conclusion : Preciseknowledge of the differences of CT findings between two surgical techniques and normal postoperative CT findingsis crucial to evaluate the postoperative CT findings in aortic aneurysm and dissection.

실과 '간단한 음식 만들기'단원에서 자율적 협동학습이 학업성취도에 미치는 효과

옥성수,정성봉,최준섭 한국실과교육연구학회 2005 實科敎育硏究 Vol.11 No.1

The purpose of this study was to investigate the effects of learning achievement by comparing the group based on Co-op Co-op learning and the control group. For this purpose, the experimental study on the unit of making plain food was achieved with 84 students(6th grade 2 classes) in K-elementary school in Pa-ju city. The Co-op Co-op learning model (Kagan) was applied to the experimental group, and the traditional small-group method to the control group. For this experiment, nonequivalent control group pretest-posttest design was applied 10 times during 6 weeks.The results were as follows; First, There was not significant difference of learning achievement as the results of the pre test. So the results has been showed that the two groups are same level of cognitive and affective domain. Second, There were significant differences of achievement of cognitive and affective domain as the results of the post test. But there were not of psycomotor domain. Third, As the pre and post test, there exists significant differences of learning achievement(cognitive and affective domain) in the experimental group, but the control group was not. In addition, the learning achievement (affective domain) of the experimental group has been showed significant difference about eating between meals, nutrition, etc. But the control group was not. Based on these results, it is concluded the Co-op Co-op learning method is more effective than the traditional small-group learning method in learning achievement of the unit making plain food.

한국어 화자의 섬 구조 언어처리에서 나타나는 담화연결 효과에 관한 연구

옥성수(Sung soo Ok),김수연(Soo Yeon Kim) 현대문법학회 2017 현대문법연구 Vol.96 No.-

Questioning across-the-board effects of islands and D-linking in wh-interrogative construction, this study presents the results of two acceptability judgement experiments where judgements of Korean native speakers for Korean wh-interrogative constructions and for English wh-interrogative constructions are provided and compared. With respect to Korean wh-questions, native Korean speakers show different acceptability patterns depending on whether wh-phrases move overtly or not. When they are scrambled, presence of islands and the D-linking feature of wh-phrase affect acceptability in Korean as if they do in English: the former degrades the acceptability while there is an increase in acceptability status in the latter. As for in-situ cases, however, D-linking rather downgrades the acceptability of the sentences. In the second experiment on English wh-questions with Korean EFL learners, there are statistically significant, but comparatively marginal, effects of island constructions and D-linking on whinterrogative judgements. These results indicate that island effects and D-linking effects are not ubiquitous with the same degree but that they do vary depending on the language type, overtness of movement, and whether the tested language is L1 or L2.

인공지능 학습을 위한 중노년층 방언 음성 데이터 구축 전략 및 분석

옥성수,김수연 대한언어학회 2024 언어학 Vol.32 No.1

This paper presents a comprehensive strategy and analysis for constructing dialect speech data for middle-aged and elderly populations aimed at enhancing artificial intelligence (AI) training. Recognizing the critical role of high-quality, diverse speech datasets in improving AI's real-world performance, especially in speech recognition, this study focuses on the underrepresented dialects of older demographics. It outlines the methodologies employed in collecting, processing, and labeling the speech data, ensuring the inclusion of various dialectical nuances, intents, and emotional states. Additionally, the paper discusses the project's challenges, including ensuring data diversity and the technical aspects of data processing. By addressing these areas, the research contributes to the development of AI systems better attuned to the linguistic diversity and needs of older users, potentially improving AI accessibility and user experience across different applications.

실과 '간단한 음식 만들기' 단원에서 자율적 협동학습이 학업성취도에 미치는 요과

옥성수,정성봉,최준섭 한국실과교육연구학회 2005 實科敎育硏究 Vol.11 No.1

The purpose of this study was to investigate the effects of learning achievement by comparing the group based on Co-op Co-op learning and the control group. For this purpose, the experimental study on the unit of making plain food was achieved with 84 students(6th grade 2 classes) in K-elementary school in Pa-ju city. The Co-op Co-op learning model (Kagan) was applied to the experimental group, and the traditional small-group method to the control group. For this experiment, nonequivalent control group pretest-posttest design was applied 10 times during 6 weeks.The results were as follows; First, There was not significant difference of learning achievement as the results of the pre test. So the results has been showed that the two groups are same level of cognitive and affective domain. Second, There were significant differences of achievement of cognitive and affective domain as the results of the post test. But there were not of psycomotor domain. Third, As the pre and post test, there exists significant differences of learning achievement(cognitive and affective domain) in the experimental group, but the control group was not. In addition, the learning achievement (affective domain) of the experimental group has been showed significant difference about eating between meals, nutrition, etc. But the control group was not. Based on these results, it is concluded the Co-op Co-op learning method is more effective than the traditional small-group learning method in learning achievement of the unit making plain food.

비이동 관점에서의 한국어 수문 유형 구문 재분석

옥성수,김수연 한국언어과학회 2012 언어과학 Vol.19 No.1

Questioning previous proposals that sluicing constructions detected in languages with overt wh-movement can be found in languages with optional wh-movement like Korean, this paper argues that what has been called sluicing constructions in Korean manifest critically different properties from those in English with respect to types of sluice, forms of sluice, and sensitivity to Island Effects. This also provides a novel view on the presence of 'be' in sluicing-like constructions based on its optionality of its presence. Expanding a view that canonical Island Effects are from processing difficulty, this paper argues that acceptability of sluicing-like constructions that include islands is graded depending on discourse context, morphological-semantic relevancy, and anti-ambiguity requirements

한국인 영어 학습자의 Wh-의문문 오류에 나타나는 의존 고리 형성의 방해요인

옥성수,김수연 영남대학교 인문과학연구소 2012 人文硏究 Vol.- No.66

To investigate an assumption that Korean learners of English show properties of UG-constrained interlanguage grammar with respect to wh-movement constructions, this study conducted a grammaticality judgement test to check whether Korean learners of English recognize cyclicity and Island effects in English wh-movement. Relative insensitivity to the distance between the filler and the gap and ignorance of the presence of Islands lead us to conclude that the interlanguage grammar of Korean learners of English is UG-constrained, where only cyclic movement is a necessary mechanism for movement operations. Island effects, on the other hand, seem to have a different status from cyclicity in that they are not a natural byproduct of movement but the result from processing difficulty supporting the language processing approach to Island effects. 영어 의문사 의문문 습득 과정에서 한국인 영어 학습자의 중간 언어 문법이 보편 문법의 규칙을 준수하는지를 알아보기 위하여, 본 연구에서는 한국인 영어 학습자 125명을 대상으로 영어 의문사 의문문에 대한 적법성 판단 실험 연구를 실시하였다. 실험 연구 분석 결과, 한국인 영어 학습자들은 영어 의문사의 단거리 이동과 장거리 이동 문장에서 모두 높은 수준의 적법성 판단을 보여, 장거리 이동의 순환 이동 규칙을 어느 정도 습득하고 있음을 보여주었다. 이러한 결과는 제 2언어의 습득이 보편 문법의 규칙을 따르지 않는다는 Bley-Vroman(1990)의 근본적 차이 가설(Fundamental Difference Hypothesis)을 반박한다. 섬 제약의 경우, 섬 제약을 위반한 문장에 대한 적법성 판단 결과는 현저하게 떨어져 한국인 영어 학습자들은 영어 모국어 화자들과는 달리 섬 제약에 민감하지 않음을 알 수 있었다. 이러한 결과는 섬 제약이 통사적 이동 규칙에 필수적으로 함께하는 부산물이라기보다는 언어 처리의 어려움이 누적된 결과라고 보는 언어 처리적 관점을 지지한다. 섬 제약이 보편 문법의 일부가 아니라는 가정 하에 본 실험 연구의 결과는 학습자들이 제 2언어 습득 과정에서 보편 문법의 영향을 받는 중간 언어 형태를 보이면서 언어 처리에 따른 어려움을 겪는다는 것을 보여준다.