• 대한의용생체공학회:의공학회지
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• 제10권3호
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• pp.351-360
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• 1989

This paper describes the design of portable arrhythmia monitor and associated algorithm for automated diagnosis based-on microcomputer in the ambulatory ECG recording, analysis, and transmitting to a hospital host computer immediately through the telephone system. The device differs from Molter recorder in that it does not store normal ECG signals but captures and alarms the ECG during suspected abnormal periods and selected temporal epochs to a central hospital site. This porta file arrhythmia monitor makes use of a general purpose computer and software will be changed to meet the custom requirements of individual physicians and patients. At present it is very obvious that each cardiologist has his own method of analyzing ECG recordings and utilizes past experience more than the firm quantitative analysis of data.

• 대한수의학회지
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• 제29권2호
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• pp.1-9
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• 1989

The distribution of portal veins within the liver in 30 Korean native cattle were observed. Vinylite solution was injected into portal veins of eighteen specimens for cast preparation. The angiography was prepared in twelve specimens by injecting 30% barium sulfate solution into portal veins, and then radiographed on a X-ray apparatus(Shimadzu 800MA 120Kvp). The results were summarized as follow: 1. The Vena portae was divided immediately upon entering the liver into a very short Truncus dexter venae portae($14.75{\pm}4.86$ : 6.9~23.1mm) and a long Truncus sinister venae portae($94.16{\pm}9.62$ : 110~150mm). 2. The Truncus sinister venae portae runs of first in the long axis of the liver from the Porta hepatis toward the left lobe. At the boundary between the quadrate and left lobes it bends sharply 50 to 80 degrees toward the Incisura ligamentum teretis, and after a course of 36. 5 to 54.mm between the quadrate and left lobes, ends abruptly. The Truncus sinister venae portae is divided for description into the Pars transversa, from the Porta hepatis to the flexure, and the Pars umbilicalis, from the flexure to the end. 3. The branches of Venae portae were Ramus ventralis lobi sinistri, Ramus intermedius lobi sinistri, Ramus dorsalis lobi sinistri, Ramus lobi quadratii, Ramus ventralis lobi dextri, Ramus intermedius lobi dextri, Ramus dorsalis lobi dextri, Rami processus caudatorum and Rami processus papillarum. 4. The Ramus intermedius lobi sinistri was arised from the left surface of the Pars umbilicalis, and was origined on the common trunk with Ramus dorsalis lobi sinistri(3 cases, 10%) or Ramus ventralis lobi sinistri(3 cases, 10%). 5. The Rami lobi quadratii consisted of the vein(15 cases, 50%) or two veins(15 cases, 50%), and was observed on the arched-shaped at 2 cases (6.6%) of the liver. 6. The Rami processus caudatorum consisted of one vein(28 cases, 93.3%) or two veins(2 cases, 6.6%). The former were formed common trunk with R, dorsalis lobi dextri(7 cases, 23.3%) or R. ventralis lobi dextri (2 cases, 6.6%). 7. The Rami processus papillarum were arised from the dorsal border of Pars transversa, and also gave off many small branches supplied papillary process of the caudate lobe. 8. The anastomosis on the branches of Vena portae was observed in the intralobar and interlobar areas. 9. The Truncus dexter venae portae and Truncus sinister venae were ramified many secondary branches that were radiated within the liver. 10. On the diaphragmatic surface, small vessels of the portal veins were observed, while there were big ones on the visceral surface. 11. The ramified angles at Ramus dorsalis lobi dextri, Rami processus papillarum, Ramus dorsalis lobi sinistri, Ramus intermedius lobi sinistri, Ramus ventralis lobi sinistri, Rami lobi quadratii, Rami processus caudatorum, Ramus ventralis lobi dextri and Ramus intermedius were 10~50, 70~110, 100~150, 140~170, 185~220, 270~330, 240~300, 270~320 and 340~10 degrees, respectively.

• Pediatric Infection and Vaccine
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• 제8권1호
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• pp.123-128
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• 2001

한국은 간흡충증의 집중유행지역이고 성인에서의 간흡충증과 합병증의 보고는 많이 있었으나 소아의 경우 보고가 없었다. 본 증례는 8세 소아의 대변검사에서 충란을 발견하여 간흡충증을 진단하였다. 방사선 검사 소견에서는 이전에 보고된 전형적인 간흡충증의 방사선 소견과는 달리 간내 말초담도계의 확장 없이 간실질에 다발성의 저음영 결절과 간문맥내에 임파선 증식을 보였다. 저자들은 환아의 과거력 및 임상증상과 말초혈액 검사소견 등을 미루어 볼 때, 이러한 소견을 간흡충 감염에서 급성기의 방사선학적 소견이 아닌가 추정하였다. 이에 8세 남아의 대변검사에서 충란을 발견하여 확진하고 praziquantel 경구복용으로 치유한 1례를 보고하는 바이다.

• 영상문화
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• 제16권
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• pp.131-161
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• 2010

본 논문은 그동안 국내에서 연구가 미흡했던 최초의 영상기구 카메라 옵스쿠라(Camera obscura)를 영상이론의 관점에서 연구하고, 근대문화에서 그것의 의미를 파악하고자 한다. 이를 위해 르네상스 이후 카메라 옵스쿠라의 역사·문화·과학적 발전과정을 추적하고, 화가들의 미술작업과 연관되며 사용된 사례를 검토한다. 카메라 옵스쿠라의 원리는 중세이후 천문학자들의 개기일식 관찰과정에서 알려지기 시작했으며, 르네상스 이후 다 빈치와 델라 포르타의 영상 실험, 아타나지우스 키르허, 요하네스 차안 등과 같은 과학자들에 의해 이론적으로 발전되었다. 17세기 후반에는 '휴대용 카메라 옵스쿠라'가 제시되고 실용화되기 시작했으며, 화가들이 스케치와 드로잉할 때 사용하기 시작했다. 카메라 옵스쿠라는 인간 스스로 세계상(世界像)을 관찰하려는 점에서 탈중세적이고 시각중심주의적인 근대 과학정신을 반영하는 매체이며, 자연세계의 모습을 인공적 이미지로 보여주는 점에서 최초의 영상기구이다. 국내에 카메라 옵스쿠라는 조선 후기 정조(正祖) 때 북경(北京)을 갔다온 연행사(燕行使)들에 의해 유입되었으며, 정약용을 비롯한 서구 학문에 개방적인 실학자들에 의해 적극 수용되었고, 당시 초상화의 대가 이명기는 카메라 옵스쿠라를 이용해서 공신상(功臣像)을 그리기도 했다.

• Journal of Preventive Medicine and Public Health
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• 제31권3호
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• pp.440-448
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• 1998

In many developed countries, for example, USA, respirator fit testing is required before entering specific work environment to ensure that the respirator worn satisfies a minimum of fit and that the user knows when the respirator fits properly. Unfortunately because we have not fit test regulation in Korea, a lot of workers wearing respirators may be potentially exposed to hazards. This study was conducted to evaluate the fitting performance for respirators and correlation fit factors with facial dimensions of wearers. 110 subjects (70 males, 40 females) were fit tested for three quarter masks, i.e., two domestic-made Mask 2, and Y and one foreign-made Mask T using PortaCount 8020. A facial dimension survey of the same subjects was conducted to develop a facial dimension grids fer correlation fit factors with facial dimension parameters. A facial dimension grid was developed on the basis of face length and lip length for quarter masks. The results obtained were as follows : 1 Fit factors of Mask T were much higher than those of Masks Z, and Y. 2. Males were fitted more properly than females. 3. Male in box 'f' of grid would be adequately fitted Mask Y and male in box 'b', 'e', 'f', 'h' of grid would be sufficiently fitted Mask T. Female in box 'h' of grid may have a good fitting performance for both Mask Y, and T. But subjects in all boxes of grid would be inadequately fitted Mask Z.

• BMB Reports
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• 제38권5호
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• pp.555-562
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• 2005

Single nucleotide polymorphisms (SNPs) are becoming the most common type of markers used in genetic analysis. In the present report a SNP has been chosen to test the applicability of Real Time PCR to discriminate and quantify SNPs alleles on DNA pools. Amplification Refractory Mutation System (ARMS) and Mismatch Amplification Mutation Assay (MAMA) has been applied. Each assay has been pre-validated testing specificity and performances (linearity, PCR efficiency, interference limit, limit of detection, limit of quantification, precision and accuracy). Both the approaches achieve a precise and accurate estimation of the allele frequencies on pooled DNA samples in the range from 5% to 95% and don't require standard curves or calibrators. The lowest measurement that could be significantly distinguished from the background noise has been determined around the 1% for both the approaches, allowing to extend the range of quantifications from 1% to 99%. Furthermore applicability of Real Time PCR assays for general diagnostic purposes is discussed.

• 대한핵의학회지
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• 제3권2호
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• pp.49-54
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• 1969

The present study has been undertaken to analyze scan manifestations in obstructive jaundice. Scan changes were cprrelated with the duration of jaundice. In addition, clearance rates of trace dose of colloidal radiogold were assessed in each case. The materials were consisted of 19 cases with surgically and/or histopathlogically verified obstructive jaundice from various causes including common duct stone, empyema of the gall bladder and carcinoma of the pancreas head etc. Blood clearance rates of colloidal $^{198}Au$ were determined after the injection of 8 uCi by simple geometrical drawing of recorded strip charts. Scan was performed following additional injection of the same radiogold. In 16 out of 19 cases, the scan revealed rather typical "arborifrom" mottlings around the porta hepatis. The intensity and appearance of such mottlings on the scan was related with the duration of jaundice and level of serum bilirubin and alkaline phosphatase. The blood clearance rates remained to be within normal range in 74 percent of the patients. In the remaining 26 percent, clearance rates ranged between 4.1 and 6 minutes. It is concluded that the association of "arboriform" mottlings and normal or mildly delayed clearance rates in the patients with jaundice is characteristic of obstructive changes in the biliary system.

• 정보학연구
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• 제6권4호
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• pp.93-111
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• 2003

웹기반 기업정보시스템은 다양한 애플리케이션, 콘텐츠 그리고 자료유형이 혼재되어 있어 시스템사용자의 정보처리효율과 정보해독성의 저해요인이 된다. 이러한 환경에서 보다 사용자친근성과 접근의 편의성을 제공할 수 있는 기술이 포털이며 이를 통하여 기업의 모든 정보시스템 그리고 외부시스템간의 원활한 연결을 도모할 수 있을 것이다. 본고에서는 기업포털(EP)을 정보처리포털(IPP), 의사결정지원포털(DPP) 그리고 지식경영포털(EKP)로 분류하고 이를 통하여 효율적인 시스템환경을 위한 구축방법을 제시하였다. 또한 구축에 따른 기술적인 문제보다는 개념적이고 절차적인 문제에 역점을 두고 분석하였다.

• 대한핵의학회지
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• 제19권1호
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• pp.145-148
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• 1985

A small number of pathologic entities such as Budd-Chiari Syndrome, cirrhosis, focal nodular hyperplasia, and superior and inferior vena cava obstruction has been reported to result in focal areas of increased uptake of radiocolloid on the hepatoscintigram. We recently studied a patient with focal accumulation of $^{99m}Tc-phytate$ at the inferior aspect of the liver, at the junction of the right and left lobe. The superior vena cava scintiangiogram was taken for the evaluation of the superior vena cava obstruction and collateral circulations. As a result of superior vena caval obstruction a considerable amount of blood flowed to the liver through the anterior parietal and periumblical venous channels. A certain fraction of radiocolloid delivered by the rete mirabile perfused to a localized area of the liver. This would explain the hot spot around the porta hepatis in this case.

• 한국임상수의학회지
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• 제30권4호
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• pp.273-277
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• 2013

This study was performed to compare clinical and diagnostic imaging features between asymptomatic and symptomatic extrahepatic portosystemic shunts in dogs. The data of thirty patients diagnosed with extrahepatic PSS by multi-detector CT were reviewed, and the dogs were divided into asymptomatic (9/30) and symptomatic (21/30) groups. Signalments, hematologic results, liver size, morphologic classifications and main portal vein to abdominal aortic ratio (PV/AO) at the porta hepatis level from CT images were evaluated in two groups. Shih-tzu (5/9) was the most frequent breed in asymptomatic group, and various breeds were presented in symptomatic group. Mean age of asymptomatic group ($9.2{\pm}3.2$ years) was significantly higher than that of symptomatic group ($4.5{\pm}3.2$ years). The most morphologic form of shunt vessel was the splenophrenic shunt (16/30). PV/AO of asymptomatic group ($1.1{\pm}0.19$) was significantly higher than the values of symptomatic group ($0.55{\pm}0.19$). Clinical signs, hematologic results and diagnostic imaging findings of asymptomatic PSS are too nonspecific to suspect PSS. Therefore, considering of patient's age and CT examination with application of PV/AO ratio could be useful for the diagnosis of asymptomatic PSS.