• 대한한방내과학회지
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• 제26권3호
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• pp.677-684
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• 2005

Objectives : This study was designed to evaluate the effects of oriental herb medicine therapy on a limited stage small ell lung cancer(SCLS) patient. Methods : The medical record of this case of SCLS was researched. The patient had been treated with oriental herb medicine for five months continuously in OPD. Clinical data was analyzed and the mass of small cell lung cancer before and after oriental herb medicine therapy was compared using X-ray and CT scan of the whole body in order to determine metastasis. Result : After 5 months of oriental herb medical treatment, most of symptoms disappeared or improved. The small cell lung cancer patially receeded and improvements were mainly seen in sputum, coughing, insomnia, diarrhea, and performance status. Conclusion : The study suggests that oriental herb medicine therapy effects the tumor size by causing remission and Improving health and relieving symptoms, and also positively effects the quality of life as a supportive or curative therapy for SCLC patients.

• Archives of Plastic Surgery
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• 제32권4호
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• pp.467-473
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• 2005

Calvarial bone grafting in craniomaxillofacial trauma and facial reconstructive surgery is now widely recognized and accepted as a standard procedure. One of the commonly reported problems of calvarial bone graft is the contour defect caused by partial resorption of the graft. But, there are few reports that discuss the fate of the calvarial bone graft based on the quantitative data. In this article, the changes of grafted calvarial bone were evaluated using 3-dimensional computed tomography(CT). 9 patients were observed with the CT scans at 2mm thickness immediately after operation and at the time of last follow-up. The area of the bone defect was segmented on the 3-dimensional CT image and calculated by AnalyzeDirect 5.0 software. The immediate postoperative bone defect area of the recipient site and the donor site were $612.9mm^2$ and $441.5mm^2$, respectively, which became $1028.1mm^2$ and $268.8mm^2$, respectively at the last follow-up. In conclusion, the bone defect area was less increased on the donor site of calvarial bone graft than on the recipient site. And the CT scan is a valuable imaging method to assess and follow-up the clinical outcome of calvarial bone grafting.

• Journal of Chest Surgery
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• 제30권7호
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• pp.724-728
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• 1997

68세된 남자로 좌측과 후측 흉부에 통증을 주소로 내원하였다. 술전 시행한 흉복부 W scan에서 대동맥류는 좌측 쇄골하동맥에서 횡격막까지 연결되었고 긴박성 파열의 소견도 보였다. 또한 술전 관동맥조영술에서는 좌회선동맥에 95%, 좌전하행지에 50%의 협착소견을 보였다. 수술은 고동맥-고정맥 우회술을 하면서 좌측 제 4늑간을 통하여 측후방 개흉절개를 하여 수술시야를 확보하였고 대동맥을 차단한뒤 대동맥류를 절개하고 인조혈관으로 대치하였다. 그리고 심박동하에서 대복제정 맥을 이용하여 좌회선동맥의 두번째 둔각변연동맥과 좌측 쇄골하동맥 기시부에 관상동맥 우회술을 하였다. 술후 환자는 술중 저혈압성 쇼크와 저산소증으로 다발성 뇌경색의 합병증을 보였다.

• 터널과지하공간
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• 제25권6호
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• pp.496-504
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• 2015

로드헤더는 커팅헤드에 픽커터를 설치하여 지반을 굴착하는 장비이다. 픽커터는 일반적으로 코니컬타입을 사용하며, 코니컬 픽커터는 선단부에 마모에 강한 텅스텐카바이드 팁을 사용하여 커터의 소모를 감소시키는 굴착 도구이다. 본 연구에서는 구리광산의 망토와 역암으로 구성된 복합지반을 대상으로 로드헤더 커팅헤드에 3종류의 코니컬 픽커터를 사용하여 내구성능을 살펴보았다. 현장적용 후, 픽커터의 육안조사와 중량감소율 측정, 그리고 CT 및 SEM을 이용한 내 외부 균열조사를 수행한 결과, 하드페이싱으로 보강한 코니컬 픽커터의 내구성능이 가장 우수하였으며, 각 코니컬 픽커터의 내 외부에서는 현장적용 전과 후 모두에서 매크로 크랙 및 미세균열을 발견할 수 없었다.

• Journal of Chest Surgery
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• 제35권3호
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• pp.235-238
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• 2002

상대정맥 증후군을 유발하는 여러 가지 원인들 중에 상대정맥 자체에서 발생하는 종양은 매우 드물다. 저자들은 상대정맥에 발생하여 혈류 장애를 초래한 평활근육종 1례를 수술 치료 하고 추적 관찰하여 보고하는 바이다. 환자는 39세 여자 환자로 내원 전 6주 동안의 안면 부종 및 두통을 주소로 내원하였다. 내원 시 안면 부종과 더불어 경부 및 상지의 정맥 충혈을 보였고, 중심정맥압은 측정 치 않았으나 경부 및 상부 흉벽의 측부혈행로도 보였다 단순 흉부 사진 상 우상부 종격동의 연부조직 종괴의 음영을 확인하고 흉부 전산화 단층 촬영 및 상대정맥 조영술을 시행하여 혈류장애를 초래하고 있는 커다란 종괴를 확인하였다. 수술은 흉골 정중 절개를 통해 체외 순환의 도움 하에 상대정맥을 종절개 하였다. 종양은 무명정맥입구에서 시작해서 우심방-상대적맥 접합부 약 1-2cm 우심방 안까지 위치하고 있었다. 먼저 종괴를 제거한 후 우경정맥의 혈전은 풍선 카테타를 이용하여 완전히 제거하였다. 조직검사상 상대정맥에서 발생한 평활근육종을 진단하였고, 수술 후 14개월 추적 관찰하는 중에 별다른 문제는 없었으며, 상대정맥 조영에서도 정상적인 소견을 보였다.

• Journal of Biosystems Engineering
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• 제40권2호
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• pp.153-158
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• 2015

Purpose: The research presented in this paper applied the chemometric analysis to the near-infrared spectral data from line-scanned hyperspectral images of beef and fish meals in animal feeds. The chemometric statistical models were developed to distinguish beef meals from fish ones. Methods: The meal samples of 40 fish meals and 15 beef meals were line-scanned to obtain hyperspectral images. The spectral data were retrieved from each of 3600 pixels in the Region of Interest (ROI) of every sample image. The wavebands spanning 969 nm to 1551 nm (across 176 spectral bands) were selected for chemometric analysis. The partial least squares regression (PLSR) and the principal component analysis (PCA) methods of the chemometric analysis were applied to the model development. The purpose of the models was to correctly classify as many beef pixels as possible while misclassified fish pixels in an acceptable amount. Results: The results showed that the success classification rates were 97.9% for beef samples and 99.4% for fish samples by the PLSR model, and 85.1% for beef samples and 88.2% for fish samples by the PCA model. Conclusion: The chemometric analysis-based PLSR and PCA models for the hyperspectral image analysis could differentiate beef meals from fish ones in animal feeds.

• 마이크로전자및패키징학회지
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• 제26권4호
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• pp.113-118
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• 2019

In this study, we investigated the growth of single-crystallinity α-Ga₂O₃ thin films on c-plane sapphire substrates using halide vapor pressure epitaxy. We also found the optimal growth conditions to suppress the phase transition of α-Ga₂O₃. Our results confirmed that the growth temperature and partial pressure of the reactive gas greatly influenced the crystallinity. The optimal growth temperature range was about 460~510℃, and the α-Ga₂O₃ thin films with the highest crystallinity were obtained at a III/VI ratio of 4. The thickness and surface morphology of the thin films was observed by scanning electron microscopy. The film thickness was 6.938 ㎛, and the full width at half maximum of the ω-2θ scan rocking curve was as small as 178 arcsec. The optical band gap energy obtained was 5.21 eV, and the films were almost completely transparent in the near-ultraviolet and visible regions. The etch pit density was found to be as low as about 6.0 × 10⁴ cm^-2.

• Nuclear Engineering and Technology
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• 제17권4호
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• pp.256-266
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• 1985

냉각재 유량상실 사고가 가압경수형 원자로인 고리 1호기에 대하여 해석되었다. 냉각재 유량 상실 사고는 그 심각도에 따라 다음과 같이 3가지로 분류된다. 즉, 일부 유량 상실사고, 완전 유량 상실 사고, 그리고 펌프 축 고착 사고이다. 사고 해석은 계통 과도 현상 및 평균 노심분석, DNBR 계산, 그리고 고온점 분석의 3단계로 수행된다. 원자로 계통과도 현상 코드인 KTRAN이 본 사고를 빠른 시간에 모사할 수 있도록 개발되었다. DNBR계산을 위해서는 열수력학 코드인 SCAN및 COBRA IV-I가 채택되었으며, 고온점 분석을 위해서는 연료봉 과도 현상 코드인 LTRAN이 쓰였다. 이러한 전산코드 시스템은 과도 현상 해석에 빨리 응답하여야 한다. 왜냐하면 사고가 발생한 후 수 초안에 심각한 상태에 이르기 때문이다. 불행히도 KTRAN코드에 의하여 이러한 목적은 충족되지 않았다. 그러나 다른 계통 해석 코드에 비하여 잔은 계산 시간에도 불구하고 KTRAN에 의한 계산 결과는 FSAR의 결과와 전반적으로 잘 일치함으로써 KTRAN코드가 사고 해석에 유용함이 밝혀졌다.

• Journal of Yeungnam Medical Science
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• 제35권1호
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• pp.84-88
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• 2018

A 33-year-old woman visited the emergency department presenting with fever and dyspnea. She was pregnant with gestational age of 31 weeks and 6 days. She had dysuria for 7 days, and fever and dyspnea for 1 day. The vital signs were as follows: blood pressure 110/70 mmHg, heart rate 118 beats/minute, respiratory rate 28/minute, body temperature $38.7^{\circ}C$, and oxygen saturation by pulse oximetry 84% during inhalation of 5 liters of oxygen by nasal prongs. Crackles were heard over both lung fields. There were no signs of uterine contractions. Chest X-ray and chest computed tomography scan showed multiple consolidations and air bronchograms in both lungs. According to urinalysis, there was pyuria and microscopic hematuria. She was diagnosed with community-acquired pneumonia and urinary tract infection (UTI) that progressed to severe sepsis and acute respiratory failure. We found extended-spectrum beta-lactamase producing Escherichia coli in the blood culture and methicillin-resistant Staphylococcus aureus in the sputum culture. The patient was transferred to the intensive care unit with administration of antibiotics and supplementation of high-flow oxygen. On hospital day 2, hypoxemia was aggravated. She underwent endotracheal intubation and mechanical ventilation. After 3 hours, fetal distress was suspected. Under 100% fraction of inspired oxygen, her oxygen partial pressure was 87 mmHg in the arterial blood. She developed acute kidney injury and thrombocytopenia. We diagnosed her with multi-organ failure due to severe sepsis. After an emergent cesarean section, pneumonia, UTI, and other organ failures gradually recovered. The patient and baby were discharged soon thereafter.

• 대한두경부종양학회지
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• 제37권1호
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• pp.17-22
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• 2021

Background/Objectives: To evaluate clinical significance of FDG PET-CT for detection of residual cancer cells after curative radiation therapy or chemoradiotherapy for patients with squamous cell carcinoma (SCC) of Head and Neck Materials & Methods: A retrospective analysis of patients with SCC of Head and neck with curative radiotherapy or chemoradiotherpy between June 2011 and Jan. 2019 was performed. Sixty patients were treated with Intensity-modulated radiotherapy (IMRT). The Metabolic responses were evaluated on the post-treatment FDG PET-CT at 12 weeks after curative radiotherapy completion. Results: Median follow up was 51.5 months (3-102). The overall survival (OS), disease free survival (DFS), local control rate (LCR), and Distant metastasis free survival (DMFS) at 5 years were 80.5%, 80.1%, 87.7% and 89.1%. Metabolic CR was found in 43 (71.7%) and partial metabolic response (PR) was noted in 17 (14.6%). Metabolic CR was significantly correlated with OS, DFS, LCR, and DMFS. On multivariate analysis, Metabolic CR remained significant for DFS and LCR. Conclusion: Metabolic CR on post-radiotherapy FDG PET-CT is highly predictive of increased DFS and LCR in patients with head and neck cancer.