• 한국임상수의학회지
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• 제34권6호
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• pp.481-483
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• 2017

A 2-year-old neutered male Bengal cat presented with a 6-month history of weight loss and chronic vomiting. An abdominal ultrasound revealed increased thickness of the pylorus and ascending duodenum with concurrent enlargement of the mesenteric lymph nodes. Histologically, branching and anastomosing trabecular pattern of dense collagen was the characteristic feature, and large populations of spindle cells were also observed. These large spindle-shaped cells were positive for smooth muscle actin and vimentin on immunohistochemical examination. Based on these findings, the cat was diagnosed with feline gastrointestinal eosinophilic slcerosing fibroplasia (FGESF), and immunosuppressive therapy was initiated immediately. Unfortunately, the cat's condition deteriorated despite treatment; the cat died 56 days after initiation of therapy. This is the first report of FGESF in South Korea.

• 대한수의학회지
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• 제8권2호
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• pp.74-79
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• 1968

This study was conducted to ramify of the splenic arteries by injection of Vinylite into the splenic arteries in twenty five adult Korean cattle. The results obtained are summarized as follows : 1. Splenic trabcular arteries of bovine were originated from 3 chief Rami lienales, Aa. terminales superior et inferior and A. polaris superior, of the splenic arteries, and the splenic parenchyma was ramified to 4-9 arterial segments by the course of the Rami lienales. 2. Each one of the arterial segments was dealt with 2-4 Teilsegmente, therefore, the splenic parenchyma was ramified from 12 Teilsegmente in minimum to 30 Teilsegmente in maximum. 3. The distribution of the arteries in the spleens was divided into 6 types by the number of arterial segments, and also was 15 kinds by the distributing arteries, Aa. terminales superior et inferior and A. polares superior. 4. The anastomosis was not observed between the arterial segments and Teilsegmente.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2001년도 ICCAS
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• pp.103.6-103
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• 2001

Glaucoma is an eye disease which is caused by abnormal high IOP (Intra Ocular Pressure) in the eye. High IOP is caused by the aqueous humor which is produced consistently but not drained due to the malfunction of the trabecular system which has a role of draining the aqueous humor into the venous system. Currently, there are some methods to treat glaucoma, Among these, the use of implants is increasing in these days due to many problems in other methods. However, conventional implants are passive implants and have critical disadvantage. Therefore, it is needed to develop a new implant using MEMS structure which is capable of controlling the IOP actively and copes with personal difference of patients. An active glaucoma implant consists of the valve actuator, pressure sensor, controller, and power supply. In this paper the valve actuator is considered. We make experiments and simulations with the fabricated ...

• 치과방사선
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• 제28권2호
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• pp.339-353
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• 1998

The purpose of this study was to investigate whether a radiographic estimate of osseous fractal dimension and power spectrum of 2D discrete Fourier transform is useful in the characterization of structural changes in bone. Ten specimens of bone were decalcified in fresh 50 ml solutions of 0.1 N hydrochloric acid solution at cummulative timed periods of 0 and 90 minutes. and radiographed from 0 degree projection angle controlled by intraoral parelleling device. I performed one-dimensional variance. fractal analysis of bony profiles and 2D discrete Fourier transform. The results of this study indicate that variance and fractal dimension of scan line pixel intensities decreased significantly in decalcified groups but Fourier spectral analysis didn't discriminate well between control and decalcified specimens.

• 대한세포병리학회지
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• 제1권2호
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• pp.179-184
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• 1990

Bone metastasis of hepatocellular carcinoma appears to be peculiar when clinical manifestation of liver disease is not apparent, and initial diagnosis of metastatic hepatocellular carcinoma by fine needle aspiration cytology is rarely obtained. We experienced a case of 45-year-old man with metastatic hepatocellular carcinoma in the sacrum, which was diagnosed by fine needle aspiration cytology. The intrahepatic mass, measuring 1.2 cm in diameter and kept unchanged in size for two years, was never proved to be hepatocellular carcinoma histopathologically. The aspirated neoplastic cells were mostly in sheets, showing abundant acidophilic cytoplasm and large, round, centrally located nuclei with single, prominent acidophilic mucleoli. In the cell block section, diagnosis of metastatic well-differentiated hepatocellular carcinoma was made without difficulty, and definite trabecular fashion with sinusoidal endothelial cell lining was found.

• Asian-Australasian Journal of Animal Sciences
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• 제23권10호
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• pp.1282-1290
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• 2010

The study was carried out to assess the developmental abnormalities induced by Cytotec in mice during intrauterine life. Pregnant mice were exposed to a single dose of 0, 0.02, 0.04, 0.06, 0.08 and $0.1{\mu}g$/g BW on day 8 of gestation. Fetuses were recovered on day 18 of gestation. These fetuses were subjected to morphological and morphometric studies. Morphological studies showed abnormalities like anophthalmia, microophthalmia, micromelia and syndactyly. In addition to these, resorptions were also encountered in the higher dose groups. Morphometric analysis showed an overall reduction in body weight, crown rump length, brain and eye circumference, pinna and snout size, length of fore and hind limb and tail size with a significant difference (p<0.001) compared to controls. The outcomes of histological studies revealed some brain defects like hydrocephaly, enlarged third ventricle and undifferentiated ectoneural cells and abnormalities of the heart included right auricle thrombosis and degeneration of trabecular zone.

• 대한한의학회지
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• 제22권4호
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• pp.22-28
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• 2001

흰쥐의 난소 절제로 야기된 골손실에 미치는 골쇄보의 영향을 관찰하였다. 난소 절제 후 흰쥐의 체중은 증가하고 자궁의 무게는 감소하였는데, 골쇄보는 특별한 영향을 주지 않았다. 그러나, 난소 절제 후 흰쥐의 tibia에서 측정한 골밀도는 대조군에 비하여 22% 감소되었으나, 골쇄보와 17be1a-estradiol를 투여한 경우는 골밀도의 감소가 현저히 억제되었다. 난소를 절제한 실험군에 골쇄보와 17be1a-estradiol를 투여하고 전자 현미경으로 관찰한 결과, trabecular bone의 미세분자 표면이 보호되는 것으로 관찰되었다. 이러한 결과들을 볼 때, 골쇄보가 17be1a-estradiol 만큼 난소 절제술 후 진행되는 골손실을 예방하는데 효과적임을 강하게 나타내고 있다고 사료된다.

• 한국정밀공학회지
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• 제22권10호
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• pp.210-217
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• 2005

This study examined the effect of cancellous bone microstructure on stress distribution within a premolar tooth and a dental implant against mastication force by the micro-finite element method (FEM). The mandibular specimen including a premolar was obtained from a cadaver and scanned with micro-CT to obtain CT images. FE models were reconstructed from CT images at mid-sagittal plane of the tooth. Six models were generated and analyzed for different structure and density in cancellous bone. Stress distributions fur each implant (or tooth) and the surrounding bone were compared. The study indicated that the microstructure of cancellous bone should be considered in finite element analysis to produce reasonable results and thus implant systems with high success rate.

• Imaging Science in Dentistry
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• 제48권2호
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• pp.127-129
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• 2018

Radiopacity in the maxillary sinus can be observed in various conditions, such as in the presence of lesions in the maxillary sinus or as a sequela of maxillary sinus surgery. This report describes the case of a 57-year-old female patient who had no previous history of surgical treatment or traumatic injury of the nose or maxillary sinus. Both maxillary sinuses were indistinguishable on panoramic radiography and showed signs of radiopacity. Computed tomography images revealed that the maxillary sinuses were filled with bony tissue and exhibited signs of sinus mucosal thickening. Biopsy results showed fragments of trabecular bone with fibrous tissue.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제22권1호
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• pp.83-85
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• 2000

The purpose of this study is to evaluate the effect of $HTR^{TM}$ (hard tissue replacement, Bioplant Inc, U.S.A) polymer on short-term healing as a grafting material for alveolar ridge augmentation. A 48-year-old female presented insufficient bone height and width for the placement of implants. $HTR^{TM}$ polymer was used for ridge augmentation. Bone biopsy was harvested 8 months after the ridge augmentation procedure. $HTR^{TM}$ polymer displayed rapid bone regeneration and mature lamellar and trabecular bone redevelopment. Clinical and histologic observation from the treatment of the patient presented suggest that $HTR^{TM}$ polymer seems to be a appropriate material for alveolar ridge augmentation.