난소 및 난소 종양 염전의 초음파 소견

오연희,이현경,이원재,이성우,박수성,윤혜원,임문환,심재철,김용탁,김성숙,김정란 동국대학교 경주대학 1993 東國論集 Vol.12 No.-

Acute torsion of the ovary and ovarian mass is a recognized surgical emergency, but rarely has the diagnosis been made preoperatively on the basis of imaging studies. The sonographic findings in 14 cases of surgically proven torsion of the ovary and ovarian mass are described. Mostly cystic ovarian mass, engorged vessel, dilated uterine tube, beak-like echo(torsion site), smooth mass wall thickening an free-fluid collection in cul-de-sac are described. More significant in terms of specificity were the demonstration in 6 cases(42.9%) of the smooth mass wall thickening and in 8 cases(57.1%) of a free fluid in the cul-de-sac. We report the sonographic findings of ovary and ovarian mass torsion that may suggest the preoperative diagnosis of this condition.

천막상부 역형성 성상세포종과 다형성 교모세포종 환자에서 수술적 종양제거 범위가 생존에 미치는 효과 : 휴향적 다변량 분석법에 의한 연구 A Retrospective Multivariate Analysis

정희원,심기범,정천기 대한신경외과학회 1992 Journal of Korean neurosurgical society Vol.21 No.12

A retrospective analysis was performed to evaluate the prognostic factors affecting the length of survival of 86 adults(age>15 years) with newly diagnosed biopsy-proven supratentorial anaplastic astrocytomas and glioblasmas treated at the Seoul National University Hospital and Korea Cancer Center Hospital between June, 1980 and June, 1990. Of the 86 patients, 44 patients (51%) had anaplastic astrocytoma, and 42 patients(49%) had glioblastoma multiforme. The mean age was 40 years, and mean initial Karnofsky performance score(KPS) was 70. The duration of follow up ranged from 3 months to 85 months. Survival curves were generated using the Kaplan-Meier curves. Median survival times were compared using the log-rank test. Additionally, for a study of the prognostic importance of multiple factors acting simultaneously, the proportional hazards regression model of Cox was used in which survival times were modeled as a function of the important independent variables identified in the univariate analysis. Categories included biopsy, partial resection, and gross total resection. Seventeen patient(20%) who underwent a gross total resection of their tumors had median survival time and 6-, 12-, 24- month survival rates of approximately 33 months, 94%, 80% and 57% respectively, when compared to 13 months, 74%, 53%, 34% for fifty patients(60%) who had partial resection. Multivariate analysis demonstrated that the age(p=0.010), the initial KPSP(p<0.001), the histology(p<0.001) and the extent of resection (p=0.016) were significant and independent variables influencing survival. These results suggest that gross total resection of supratentorial anapalstic astrocytomas and glioblastomas is directly associated with longer survival when compared to partial resection or biopsy.

터어키안 상부에서 발생한 뇌수막종의 미세수술적 치료

한대희,정영섭,김봉수,정희원,조병규,최길수,심보성 대한신경외과학회 1986 Journal of Korean neurosurgical society Vol.15 No.1

Suprasellar meningiomas are uncommon intracranial tumors representing approximately 4-10% of intracranial meningiomas and the total excision is sometimes hazardous because of surrounding vital structures. We have experienced four cases of this lesion during last three years and the masses were approached through frontoparietal craniotomy and lateral subfrontal approach and were removed completely with microsurgical technique. Visual disturbances were improved in three cases and unchanged in one case. The literatures are also reviewed.

핍지신경교종 37예에 대한 임상적 연구

김하영,정희원,조병규,한대희,지제근,최길수,심보성 대한신경외과학회 1986 Journal of Korean neurosurgical society Vol.15 No.4

The authors reviewed 37 consecutive cases of histologically proven oligodendroglioma who were treated at the Seoul National University Hospital, between 1979 and 1986. There was a 1.5:1 male to female ratio. The age of patients at the time of diagnosis varied between 6 and 64 years(mean 38 years), with 51% in the fourth and fifth decades. The incidence of oligodendrogliomas represented 5% of all brain tumors and 15.5% of all gliomas. All but one were located supratentorially and 54% of them involved the frontal lobe. The mean duration of symptoms prior to the surgery was 27.2 months, but seizures had a considerably longer duration of 6.4 years. The common symptoms were headache(62%), seizures( 38%), and motor weakness( 22%). The common neurological findings were papilledema(51%), motor deficit(24%), and change in cognition(19%). Six out of 37 cases(16%) presented as the spontaneous intracranial hemorrhage. Calcifications were detected on plain X-ray films of the skull in 19% of patients and fine vascular stains were found on carotid angiograms in 30% of the cases. Brain CT revealed calcification(57%), cyst formation(43%),low density(35%) and heterogenous contrast enhancement (35%). The important factors affecting the prognosis and the recurrence rate were (1) the extent of surgical excision, (2) postoperative radiation therapy, and (3) the pathologic grading. There was a significant difference in the recurrence rate between patients treated with postoperative irradiation and patients treated with surgery alone.

고속전철 추진 시스템의 미끄럼 방지 제어기법에 관한 연구

황돈하,김동희,노채균,심광열,조규판,정원영 영남대학교 공업기술연구소 1999 工業技術硏究所論文集 Vol.27 No.2

Induction motor drive with PWM inverter control has been developed for Korean High Speed Railways. To improve traction performance, the anti-slip control(ASC) to recover adhesion must be considered. This paper describes a novel hybrid anti-slip control method for the induction motor drive. By introducing the vector control for drive system, quick response of the motor torque can be achieved when wheels are going to slip. A hybrid control scheme by mixing two conventional control methods (slip velocity feedback control and slip detection pattern control) for wheel slip and re-adhesion is proposed. This control method is simulated by motor drive, train load, and friction-creep models. The train running simulation results based on induction motor vector control with PWM inverter show that good re-adhesion characteristics are obtained.

Static Induction Transistor(SIT), Drive signal phase shift control, Induction heating

노채균,김동희,김종해,남승식,정원영,심광열 嶺南大學校 工業技術硏究所 1997 工業技術硏究所論文集 Vol.25 No.1

This paper proposed a novel SIT high frequency resonant inverter having drive signal phase shift control function. Phase control type inverters using SIT can realize a power conversion at the high switching frequency with low switching loss. Especially, the high output power can be obtained by connecting the output terminal of two unit inverters in series. The stability of system using protection circuit for over current and the automatic follow-up control for load variation by using PLL are presented. This inverter produces approximately sinusoidal waveform at a high frequency, ranging from 180 Khz to 220 Khz, and is applied to the 2KW induction heating. The operating characteristics of this inverter circuit are discussed from a theoretical point of view and compared with experimental results.

CT 소견상의 소위 염증성 육아종

홍승철,김현집,정희원,조병규,한대희,지제근,최길수,심보성 대한신경외과학회 1986 Journal of Korean neurosurgical society Vol.15 No.2

Authors report 10 cases of intracranial inflammatory granulomatous lesions which were identified on CT scan and proven pathologically after surgical excision. They were composed of three cases of tuberculoma, three cases of degenerated cysticercus, two cases of healed abscess and two cases of non-specific inflammatory lesions. Most patients were children or young adults. Seizure was the most frequent presenting symptom. All cases had characteristic CT findings in common a small nodular or ring-like lesion with strong enhancement surrounded by irregular-shaped low density area. Surgical exploration is of value in that specific diagnosis would not be possible with clinical and radiological findings only.

면역효소측정법(ELISA)와 Praziquantel 약물요법이 중추신경계 낭미충증의 진단과 치료에 미치는 영향

왕규창,정천기,정희원,김동규,조병규,한대희,최길수,심보성 대한신경외과학회 1986 Journal of Korean neurosurgical society Vol.15 No.4

The diagnosis and management of neurocysticercosis have changed after the recent introduction of Enzyme Linked Immuno-sorbent Assay(ELISA) and praziquantel. Authors reviewed 11 cases of surgically proved neurocysticercosis in which these new diagnostic and therapeutic methods were applied. Age was widely distributed(range 16-59, mean 40 years old). Male preponderance was noted as in other reports. EUSA was tested in all cases and 10 out of 11 cases were strongly positive, while I case of degenerated cysticercosis was negative. Praziquantel was tried but failed in 5 cases before surgical intervention. Removed cysticerci were located in the fourth ventricle(5 cases), the parenchyme(3 cases), the lateral ventricle(l case), the cistern -parenchyme(1 case), and the cisterna magna(l case). Conclusions were as followings: ELISA was reliable in the diagnosis, but was deceitful as a quantitative base during follow-up. If progressive hydrocephalus was detected on the follow-up brain CT( computerized tomography) and no improvement was found clinically after praziquantel therapy in the case of positive ELISA and hydrocephalus, authors recommend ventriculography in the case of suspicious intraventricular lesion, or recommend shunting procedure in simple hydrocephalus. If the apparent mass disappeared after praziquantel or surgical intervention in the case of positive ELISA, but no improvement occurred clinically, then authors recommend considering of mixed type cysticercosis and performing the diagnostic work-up.

알레르기 환자에서 한방 이외의 대체 요법의 사용 현황에 대한 다기관 조사

이현정 ( Hyun Jung Lee ),이재현 ( Jae Hyun Lee ),이용원 ( Yong Won Lee ),김철우 ( Cheol Woo Kim ),동헌종 ( Hun Jong Dhong ),박해심 ( Hae Sim Park ),조영주 ( Young Joo Cho ),조진희 ( Jin Hee Cho ),조상헌 ( Sang Heon Cho ),편복양 ( 대한내과학회 2011 대한내과학회지 Vol.80 No.1

Background/Aims: The use of unproven complementary/alternative medicine (CAM) to treat allergies is popular in Korea. We conducted a multicenter survey of the current use of CAM other than herbal medication in Korean allergy patients. Methods: This study enrolled 510 adults with allergic diseases, including asthma, allergic rhinitis, atopic dermatitis, and chronic urticaria, from ten hospitals. They underwent a structured questionnaire interview and clinical assessment of the prevalence, motivation, costs, and subjective assessment of CAM. Results: Of the patients, 16.7% used at least one type of CAM to treat their allergic diseases. Common types of CAM were diet (48.6%), aroma therapy (23.8%), massage (14.3%), breathing exercises (7.6%), baths (5.7%), and mind control (5.7%). The therapeutic effects of CAM included improved in patients using mind control (50%), diet (50%), breathing exercises (75%), and baths (33.3%), but worse in patients using aroma therapy (28%), and massage (26.7%). About 36.4% of the patients used CAM more than four times per year, and the average cost per CAM user was 370,000 won/year. The main reason for trying CAM was `hope to improve my constitution`. Conclusions: CAM is used widely for treating allergic diseases in Korea. Detailed knowledge of CAM and patient education are important. Further studies of the clinical efficacy of CAM are needed. (Korean J Med 2011;80:68-77)

측뇌실내 종괴의 감별진단 및 수술적 치료

김동규,김봉수,이상형,심기범,왕규창,정희원,김현집,조병규,최길수,한대희 대한신경외과학회 1993 Journal of Korean neurosurgical society Vol.22 No.2

We present a series of 42 patients with the lateral ventricular mass lesions who underwent operative removal between 1979 and 1992 at the Seoul National University Hospital. These lesions included 29 tumors, 10 benign cysts and 3 arteriovenous malformations. There were 20 lesions in the trigone, 14 in the frontal horn, 6 in the body, and 2 in the temporal horn. Together with the age of the patient, the location in the lateral ventricle and the CT or MR patterns, the range of the differential diagnosis of the lesions can be narrowed. The mass were removed by various surgical approaches ; 11 by the middle frontal gyrus, 10 by the superior parieto-occipital, 13 by the middle temporal gyrus, 4 by the anterior transcallosal, 2 by the posterior transcallosal and 3 by the combined approaches. The superior parieto-occipital approach left postoperative morbidities in 64% and other approaches in 20 to 25% of the cases. These morbidities included hemiparesis, hemianopsia, aphasia, memory distubance and seizure. Most hydrocephalus disappeared without the shunting procedure after removal of the lateral ventricular mass. The high frequency of postoperative complications in the superior parieto-occpital approach require meticulous consideration in the selection of this approach.