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박경주 ( Kyung Joo Park ) 대한내과학회 2009 대한내과학회지 Vol.77 No.4
Chronic obstructive pulmonary disease (COPD) is commonly a combination of pulmonary emphysema and chronic bronchitis. Emphysema is a pathologically defined disease that can be accurately diagnosed using CT. Furthermore, CT is useful for determination of the subtypes, extent and distribution of emphysema. Objective quantification of emphysema is feasible using CT densitometry of lung parenchyma, that can be used for selection of adequate candidates and monitoring clinical results of various therapeutic measures for severe emphysema. Imaging parameters in CT densitometry should be kept constant in follow up examination for an effective comparison of the results. Chronic bronchitis is diagnosed by symptomatic criteria with nonspecific CT findings. Airway dimensions can be objectively measured using CT, enabling further understanding of pathophysiology of COPD. (Korean J Med 77:407-414, 2009)
박경주(Park kyung-Joo),양동우(Yang Dong-Woo) 한국기술혁신학회 2006 기술혁신학회지 Vol.9 No.4
본 연구는 상장기업 311개 업체를 표본으로 하여 독립변수인 상장 이전 연구개발비에 대해 종속 변수인 상장 이후 기업 성과에 미치는 영향을 회귀분석을 통하여 실증 분석하였다. 연구결과는 다음과 같다. 첫째, IPO 직전년도 연구개발비는 IPO 당해년도 기업 성과인 평균 시가총액/자산은 모든 모형에서 유의한 양(+)의 상관관계를 미치고 있고, 평균 주가에는 모든 모형에서 유의한 결과를 보이지 않았으나 양(+)의 결과를 보였다. 또한 연구개발비 지출에 대한 매출액과 주당 순 자산의 변화는 통계적으로 유의 하지 않는 것으로 나타났다. 둘째, IPO 이전 3년 평균 연구개발비에 대한 IPO 당해포함 이후 3년 평균 기업성과는 평균시가 총액/자산에는 모든 모형에서 유의한 양(+)의 결과를 보였다. 평균 주가에 자산화 된 연구개발비에 따른 평균 주가 변동은 유의한 양(+)의 결과를 보였고 비용 화된 연구개발비의 경우는 유의한 음(- )의 영향을 미치고 있다. 이러한 결과는 기업들의 연구개발비에 따른 신호효과(singnal effect)로 인한 주가에 미치는 영향은 단기 혹은 중장기(3-5년)에 긍정적으로 나타나는 것으로 추정되나 원초적으로 기술 수준이 낮은 벤처 및 일반기업 등은 연구개발비가 기업성과에 단기적으로 수익성 제고에 부정적인 영향을 미치는 것으로 해석된다. This paper deals with an empirical study to statistically analyse various financial performances of the selected IPO firms using their investments on research and development(R&D) as an independent variables. The major results of statistical analyses have come up with the followings: 1) The regression analyses for change in average annual total market stock value/total assets over that of R&D expenditures showed the positive relationship. However, those of sales volume and net assets per share showed negative without statistical significances. 2) The statistical analyses in effect of the 3-year average total market stock value/total assets over the 3-year average R&D expenditures resulted in the positive coefficients what are statistically significant at 95% level. 3) Another statistical analysis showed that the financial performances of the IPO films with deferred assets were better than those of the firms without them. In sum, the degree of investment on R&D by the IPO firms are expected to positively affect their financial performances except the Finns without having proper original technologies.
위 ( 胃 ) 에 발생 ( 發生 ) 한 혈관외피세포종 ( 血管外皮細胞腫 ) ( 例 )
이계희(Kye Heui Lee),박경주(Kyung Joo Park),김동린(Dong Chan Kim),이수영(Su Young Lee),경춘숙(Choon suk Kyoung),최상전(Sang Jeon Choi),손인(In Sohn),박성훈(Seong Hoon Park),전호경(Ho Kyung Chun),최신은(Shin Eun Choi) 대한소화기학회 1990 대한소화기학회지 Vol.22 No.3
Hemangiopericytoma of stomach is an extremely rare tumor, Recentely we experienced a case of gastric. hemangiopericytoma of a 51-year-old man with massive upper gastrointestinal bleeding, The rarity of thie case is emphasized and the literature reviewed, The hemangiopericytoea of stomach is characteril by mild epigaetric pain, slowly growing mass and upper gaetrointestinl bleeding, In the limited exrience reported so far, partial gastric resection may be an effective form of treitment.
김정룡(Chung Yong Kim),최병인(Byung Ihn Choi),한만청(Man Chung Han),김수태(soo Tae Kim),박경주(Kyung Joo Park),이병희(Byung Hee Lee) 대한소화기학회 1987 대한소화기학회지 Vol.19 No.1
N/A A retrospective review of CT finding was undertaken from 89 patients who had hepatocellular carcinoma confirmed by histopathologically or clinically. In morphologic classification, solitary type was the most frequent one (43 cases) followed by multinodular type (27) and diffuse type (19) in order of frequency. Bulging of liver contour due to tumor was seen in 45 cases (50%). Size of the tumor in solitary type (43 cases) was mostly larger than 3cm in diameter except 6 cases. 44 cases were located in the right lobe, 19 cases in the left lobe and the remainder involved both lobes. Pre-contrast CT revealed the tumors in the 57 cases (64%) out of 79 cases in which pre-contrast CT was performed, however, detection rate increased up to 98% (87 out of 89 examinations) in post-contrast CT. A majority of tumors showed low density in both pre-contrast CT (64 cases) and postcontrast CT (85 cases) and 3 tumors had calcification in the lesion. 22 cases (25%) showed portal vein invasion in CT and regional lymph node enlargement was demonstrated in 24 cases (27%). Variable cirrhotic pattern was noticed in 55 cases (62%) of hepatocellular carcinoma.
황영웅(Young Woong Whang),최병현(Byung Hyun Choi),이내희(Nae Hee Lee),권석호(Suck Ho Kwon),정정일(Jeong Il Jeong),박재후(Jae Who Park),전희선(Hee Sun Jon),박경주(Kyung Joo Park),박광화(Kwang Hwa Park),이강용(Kang Yong Lee),김효철(Hug 대한내과학회 1997 대한내과학회지 Vol.53 No.1
Pulmonary alveolar proteinosis is a rare disease, which hallmark is a dense accumulation of PAS positive phospholipid material within alveolar sac. Pulmonary alveolar proteinosis is classified as primary form of unknown etiology and secondary form associated with other diseases. We report a case of secondary pulmonary alveolar proteinosis associated with acute erythroleukemia. A C year old male patient complained of nonproductive cough and general weakness, and presented fine inspiratory crackles at both lower lung field. Chest radiographs and high resolution CT scans showd a lobular pattern of ground-grass opacity with interlobular septal thickening in the center field of the both lungs, Bone marrow aspiration and biopsy revealed acute erythroleukemia. Open lung biopsy revealed PAS positive eosinophilic granular material filled in alveoli. He was treated with TAD chemotherapy, but died from multiorgan failure with pneumonia 22days after chemotherapy.
장기간 Furosemide 의 복용으로 발생한 신수질 석회화가 동반된 가성 Bartter 씨 증후군
조윤숙(Yoon SooK Cho),윤여학(Yeo Hak Yoon),채봉남(Bong Nam Chae),최진용(Chin Yong Choi),이가희(Ka Hee Yi),김윤구(Yoon Goo Kim),박성훈(Seong Hoon Park),박경주(Kyung Joo Park),박성수(Seong Soo Park),박송자(Song Ja Park) 대한내과학회 1993 대한내과학회지 Vol.45 No.2
A 30-year-old married woman showed hypokalemic metabolic alkalosis, normotensive hyperreninemia, hyperaldosteronism and a high urinary sodium and chloride level. She was thought have Bartter's syndrome because she denied taking diuretics. But all the five tests of urine for furosemide by high performance liquid chromatography (HPLC) gave positive results. On being confronted with the results of urine analysis showing the presence of furosemide, she did admit to the taking of furosemide for 11 years. Renal radiologic studies including intravenous pyelography, ultrasonography, and computed tomography showed medullary nephrocalcinosis. This case is unique in that nephrocalcinosis have been related to long term furosemide ingestion in adults and we concluded that this apparent case of Bartter's syndrome with nephrocalcinosis was caused by long term surreptitious diuretic ingestion and suggest that this may occur more frequently than is generally appreciated.
현저한 후복막강내 임파절 종대를 보인 아급성 괴사성 임파선염 1 예
경춘숙(Choon Suk Kyeong),김안나(An Na Kim),김성용(Seong Yong Kim),임용성(Yong Seong Lim),임선희(Seon Hee Lim),이계회(Kye Heui Lee),최상전(Sang Jeon Choi),손인(In Son),박성훈(Seong Hoon Park),유병욱(Byeong Uk You),박경주(Kyung Joo Pa 대한내과학회 1991 대한내과학회지 Vol.41 No.6
Subacute necrotizing lymphadenitis is a self-limiting lymphadenitis that could be misdiagnosed as malignant lymphoma both clinically and histologically. It was initially reported by Kikuchi in 1972, but its etiology is still unknown. It mainly affects young women and usually manifests as moderate fever and lymphadenopathy with or without local pain. The lymphadenopathy appears most commonly in the neck, and lymphadenopathy in sites other than cervical lesions or, generalized lymphadenopathy is less common. Histologcally, the involved lymph nodes are characterized by a well-circumscribed necrotic area, varying degrees of nodal architectural loss, abundant karyorrhectic nuclear debris, infiltrations of large lymphoid cells, histiocytes, and macrophages phagocytosing nuclear debris, and the absence of a significant number of plasma cells and neutrophils. Recently we experienced a rare case of subacute necrotizing lymphadenitis that showed prominent enlargement of the multiple retroperitoneal lymph nodes in a 17-years-old man.
폐결절의 감별진단 : 이중시기 나선식 조영증강 CT의 유용성 Efficacy of Two-Phase Enhanced Spiral CT
박경주,강두경,황성철,이이형,서정호 아주대학교 의과학연구소 1998 아주의학 Vol.3 No.2
To evaluate the efficacy of two-phase enhanced spiral CT in differentiating between benign and malignant pulmonary nodules, 31 patients with pulmonary nodules with less than 5 cm in diameter underwent spiral CT at unenhanced, early, and late enhanced phases. Enhanced scans were carried out 30(early phase) and 70-180 sec (late phase) after intravenous injection of mixed solution of 100 mL 60% iodinated contrast media and 60 mL normal saline in a rate of 2.5 mL/sec. The pattern, measured degree of enhancement, and nodule-to-muscle enhancement ratio were compared between 17 benign (mean size: 2.8 cm, 15 tuberculomas included) and 14 malignant nodules (mean size: 3.6㎝). The degree of enhancement of nodules was higher in the late enhanced phase than in the early phase. The measured degree of enhancement was significantly greater in malignant nodules in the early (mean±SD: 13.0±10.9 HU) and late (19.0±9.7 HU) enhanced phases than in benign nodules (early: 3.4±4.2HU, late: 7.2±9.6 HU) (p<0.01 by Wilcoxon rank-sum test). Nodule-to-musde enhancement ratio was greater in malignant (2.1±1.2) than in benign nodules (0.5±0.7) in the late enhanced phase (p<0.01). The enhancing pattern of nodules was more efficiently evaluated with the late enhanced images. Most (70%) of the benign nodules showed no enhancement (23%) or thin rim enhancement in the peripheral region (47%). Malignant nodules were enhanced in homogeneous (57%), mosaic (29%), or peripheral pattern with thick enhancing rim (14%). Two-phase enhanced spiral CT is efficient in evaluation of the pattern and the degree of enhancement of pulmonary nodules and useful for noninvasive differential diagnosis.