• The Korean Journal of Nuclear Medicine
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• v.29 no.4
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• pp.484-491
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• 1995

It is well known that hepatobiliary agent are taken up by metastatic hepatocellular carcinoma(HCC) as well as primary HCC. But the reported cases of the extrahepatic metastasis of HCC diagnosed by hepatobiliary scintigraphy are for the most part hematogenous ones. The relation of the uptake pattern of hepatobiliary agent in the primary and metastatic HCC is also still remains unknown. So we undertook this study to evaluate the relation of the hepatobiliary scintigraphic patterns of primary and metastatic HCC with different metastatic routes. Nine patients with primary HCC and twelve cases of metastatic HCC including four lung metastases, one bone metastasis, one right atrial metastasis, one peritoneal wall metastasis, and five lymph node metastases were studied with $^{99m}Tc-DISIDA$ scintigraphy. The images were taken on 10, 30 minutes, 1, 2, 4-6 hours. The overall detection rates of hematogenous metastases(lung and bone) is 60%(3 of 5), direct metastasis(right atrium and peritoneal wall), 100%(2 of 2) and lymphatic metastases, 0%(0 of 5). In four of five metastatic cases demonstrated with hepatobiliary scintigraphy, biliary agent is also taken up by primary HCC lesions. And the appearing time of the radioactivity in the direct metastatic HCC lesioin is same as that of primary HCC and in the cases of hematogenous metastasis, earlier than that of primary HCC. Hepatobiliary scintigraphy is more useful in the diagnosis of the metastatic HCC than primary HCC, in the cases of hematogenous and direct metastasis.

• Journal of Korean Society of Coastal and Ocean Engineers
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• v.28 no.1
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• pp.27-33
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• 2016

A numerical analysis on deck wetness is carried out for a large caisson directly wet-towed by tugs in irregular waves. A constant panel method is used for linear analysis in frequency domain and a statistical post-processing for the deck wetness is presented. Hydrodynamic coefficients obtained from the frequency domain computation are imported for time domain analysis which enables complete modeling for towing equipment, environment, etc. Both frequency and time domain computations over two sea states are performed and comparison is made. In the time domain analysis, towing systems of various arrangements of tugs are investigated from short-term prediction for the largest deck wetness and the number of occurrences of deck wetness.

• Tuberculosis and Respiratory Diseases
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• v.59 no.4
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• pp.356-360
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• 2005

Background : This study examined the clinical utility of using indirect chest radiography during a physical examination of new conscripts for determine the presence of pulmonary tuberculosis. Methods : Over an eight-month period, this study examined 25386 people who underwent a physical examination after conscription. The abnormal findings on mass miniature radiography were followed-up using direct chest radiography. The positive predictive value of mass miniature radiography and direct chest radiography was compared. The incidence, degree of infiltration and clinical outcome of active pulmonary tuberculosis were also evaluated during a follow-up examination. Results : The positive rate of mass miniature radiography was 1.19% (n=302). Various lesions were identified: Parenchymal lesions (n=109), mediastinal lesions (n=6), cardiovascular lesions (n=45), pleural lesions (n=49), bony lesions (n=90) and miscellaneous lesions (n=7). The incidence of active pulmonary tuberculosis by mass miniature radiography was 0.26% (n=67). The first diagnosis was made in 50 people; active pulmonary tuberculosis (n=42), pneumonia (n=1), a mediastinal mass (n=1), a rib fracture (n=2) and a pneumothorax (n=4). Most cases of active pulmonary tuberculosis were mildly infiltrated and either improved or were cured by the follow-up examination. Conclusion : Although mass miniature radiography in a physical examination after conscription has limitations, but it is a useful means for detecting the presence of early disease, particularly in active pulmonary tuberculosis.

• 프린팅코리아
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• v.11 no.7
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• pp.118-121
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• 2012

16세의 어린 나이에 인쇄에 뛰어든 장회운(58) (주)예인미술 대표이사. 장회운 대표이사는 40여년을 인쇄현장을 직접 누비며 남다른 경영철학으로 (주)예인미술을 종합인쇄기업으로 성장시켰다. 최근에는 상업인쇄에서 패키지인쇄로 사업을 전환하기 위해 하이델베르그의 CD102-6XL을 도입하기도 했다. 장회운 대표를 만나 그의 경영 철학에 대해 들어봤다.

• Journal of the Korean Orthopaedic Association
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• v.55 no.2
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• pp.143-153
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• 2020

Purpose: To evaluate the timing of the improvement in surgical skills of the direct anterior approach for hip arthroplasty through an analysis of the clinical features and learning curve in 58 cases. Materials and Methods: From November 2016 to November 2018, 58 patients, who were divided into an early half and late half, and underwent hip arthroplasty by the direct anterior approach, were enrolled in this retrospective study. The operation time and complications (fracture, lateral femoral cutaneous nerve injury, heterotopic ossification, infection, and dislocation) were assessed using a chi-square test, paired t-test, and cumulative sum (CUSUM) test. Results: The mean operation times in total hip arthroplasty (26 cases) and bipolar hemi-arthroplasty were 132.1 minutes and 79.7 minutes, respectively, demonstrating a significant difference between the two groups. CUSUM analysis based on the results revealed breakthrough points of the operation time, decreasing to less than the mean operation time because of the 16th case in total hip arthroplasty and 14th case in bipolar hemiarthroplasty. Complications were encountered in the early phase and late phase: five cases of fractures in the early phase, no case in the late phase; eight and two cases of lateral femoral cutaneous nerve injury, respectively; three and two cases of heterotopic ossification, respectively; and one case of dislocation, one case of infection and three cases of others in the early phase. The CUSUM chart for the fracture rate during operation in the early phase revealed the following: five cases fracture (17.2%) in the early phase and no case in the late phase (0%). This highlights the learning curve and the need for monitoring the inadequacy of operation based on the complications. Conclusion: Hip arthroplasty performed by the direct anterior approach based on an anatomical understanding makes it difficult to observe the surgical field and requires a learning curve of at least 30 cases.

• Journal of the Korean Arthroscopy Society
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• v.9 no.2
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• pp.232-237
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• 2005

Purpose: To evaluate the effectiveness of arthroscopic direct cystic removal of popliteal cyst using 70 degree arthroscopy and posteromedial portal. Materials and Methods: From January 2003 to January 2004, 21 patients(23 cases) with popliteal cyst have been treated by direct cystic decompression with arthroscopy. The average age of the 21 patients was 54 years(range 35 to 78 years). There were 5 males and 16 females. Of the 23 cases,8 cases were occured in right side and 11 cases were occured in left side. 4 cases were both sides. In all cases, preoperative MRI were performed to detect combined intraarticular pathology. At 6 months and 1 year postoperatively, follow-up ultrasonography were performed to detect recurrence of cyst. We used Rauschning and Lindgren criteria for clinical evaluation. Results: All cases had no recurrence and no complaints of pain, swelling, or functional impairment at 1 year after surgery. At ultrasonography, no recurrence were founded. One complication was occurred. Postoperatively, Rauschning and Lindgren criteria were more than grade 1. Conclusion: Arthroscopic direct cystic removal using arthroscopy and posteromedial portal is an effective method in popliteal cyst surgery.

• Bulletin of Food Technology
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• v.14 no.3
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• pp.94-102
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• 2001

대두, 소위 황두는 중국, 아시아는 물론 세계에서 예로부터 광범위하게 식용으로 재배한 두류이다. 대두에는 식물성 유지와 단백질이 풍부하다. 역사 이래 인류는 콩으로부터 착유하거나 두부를 만들거나 동시에 가공하지 않고 직접 식용으로 이용하여 왔다. 근래에 두류에는 식물성 유지와 단백질 등의 영양소가 풍부하다는 것 이외에 새롭게 알려진 특수한 생물학적 작용을 하는 생리 활성 물질이 있다고 밝혀졌다. 그 예로는 대두 oligosaccharide, 대두 사포닌, 대두 이소플라본, 대두 인지질, 비타민 E 등이 있다.

• Proceedings of the Korea Contents Association Conference
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• 2013.05a
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• pp.441-442
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• 2013

통합적인 홍수 예경보시스템의 구현을 위해서는 작은 단위지역별, 재해특성별 수요자의 요구상황에 맞는 시스템 개발이 요구된다. 그런데 도시하천 유역의 경우 주로 본류하천에 의한 배수위 영향을 받고 있으며 제내지로부터는 배수펌프에 의한 인위적인 유입 유량이 하천 수위에 영향을 미치고 있다. 이러한 도시하천의 경우 강우-유출 관계 및 유량-수위 관계가 특수한 형태를 나타내어 이에 대한 면밀한 해석을 통해서만이 적용성 높은 홍수 예경보가 가능할 것이다. 따라서 본 연구에서는 이러한 배수위 영향을 받는 도시하천에 대한 홍수 예경보 측면에서의 분석 기법을 수립하고, 특정 하천 지점에서의 예경보 발령 기준 수위에 대한 지속시간별 경보발령 예상 강우량 데이터를 구축하여 실제 호우상황 발생 시 직접적으로 이용 가능한 중소하천 홍수예경보 분석 체계를 마련하였다.

• Journal of Chest Surgery
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• v.37 no.7
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• pp.578-584
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• 2004

Sinus of Valsalva aneurysm is a rare cardiac anomaly and a long-term survival after surgical treatment has not been well established. This study was designed to evaluate the long-term surgical results after the repair of sinus Valsalva aneurysm. Material and Method: From April 1991 to November 2003, 35 patients (23 male, 12 female, mean age 35.2 years, range 11∼64) underwent operation for sinus of Valsalva aneurysm. Twenty six patients (74.3%) were in the New York Heart Association (NYHA) class III∼IV before surgery. In preoperative echocardiogram, mean EF was 63.32 $\pm$ 11.43% and nine patients (25.7%) were in AR grade III∼IV. Direct closure, patch closure of ruptured sinus Valsalva were performed in fourteen patients (46.7%), sixteen patients (53.3%) respectively. Aortic valve replacement, valvuloplasty were performed in five patients (14.3%), three patients (8.6%) respectively. Three patients (8.6%) underwent the Bentall procedure. Concomitant procedures were performed in 15 patients (42.9%), which were closure of VSD and ASD. Mean CPB time and ACC time were 116.79 $\pm$ 38.79 and 81.2 $\pm$ 28.97 minutes. Result: There was no operative mortality. One patient (2.9%) developed complete heart block that required a permanent pacemaker implantation. Three patients (8.6%) required reoperation due to a recurred rupture of the sinus Valsalva aneurysm and developed aortic insufficiency. Mean follow-up time was 58.55 $\pm$ 38.38 months. There was one late death. Actuarial 5 year freedom rate from reoperation was 87.1 $\pm$ 7%. Conclusion: Surgical treatment for sinus of Valsalva aneurysm is safe and has satisfactory long-term results.

• Journal of Chest Surgery
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• v.39 no.9 s.266
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• pp.706-709
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• 2006

Proximal coronary artery stenosis after direct coronary artery ostial perfusion is an infrequent but life-threatening complication. We had been experienced 3 cases of proximal coronary artery stenosis related to direct ostial perfusion since September, 2000. And now we report the cases.