• Title/Summary/Keyword: S100A14

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XRF Analysis and Polarizing Microscopic Study of the Lava Cave Formation, Korea, Japan and Russia (한국, 일본, 러시아 용암동굴 형성층의 형광X선 분석과 편광현미경적 연구)

  • Sawa, Isao;Furuyama, Katsuhiko;Ohashi, Tsuyoshi;Kim, Chang-Sik;Kashima, Naruhiko
    • Journal of the Speleological Society of Korea
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    • no.74
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    • pp.23-31
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    • 2006
  • (1) Kaeusetgul Cave in Kimnyong-Ri, Jeju-Do, Korea. Kaeuset-gul Cave (KC) is situated in NNE area of the Manjang-gul cave (125m a.s.l.). Kaeuset-gul Cave lies at $126^{\circ}45'22"$ E in longitude and $33^{\circ}33'09"$ N in latitude. The coast belong Kimnyeong-Ri, Kujwa-eup, Jeju-Do. Altitude of the cave-entrance is 10m and length of the cave is 90m. Lava hand-specimens of KC are studied by X-ray fluorescence analysis (XRF). Average major chemical components of specimens from KC is as follows (wt.%); $SiO_2=47.03$, $TiO_2=3.16$, $Al_2O_3=18.41$, FeO*=13.53, MnO=0.14, MgO=5.05, CaO=8.66, $Na_2O=2.81$, $K_2O=0.67$, $P_2O_5=0.55$ in KC. Polarizing microscopic studyindicates that these specimens are described of alkali-basalt. (2) Tachibori Fuketsu (Cave) in Shizuoka Prefecture, Fuji Volcano, Japan Tachibori Fuketsu lies attoward the south in skirt of the Fuji volcano, $138^{\circ}42'04"$ east longitude and $35^{\circ}18'00"$ north latitude. The location of cave entrance is 2745, Awakura, Fujinomiya-shi, Shizuoka Prefecture. The above sea level and length of Tachibori Fuketsu are 1,170m and 82m. Average major chemical components of specimens from cave areas follows (Total 100 wt.%) ; ($SiO_2$=50.52, $TiO_2$=1.69, $Al_2O_3$=15.47, FeO*=13.13, MnO=0.20, MgO=5.97, CaO=9.17, $Na_2O$=2.52, $K_2O$=0.94 and $P_2O_5=0.40).$ Polarizing microscopic study indicates that these specimens may belong to tholeiite-basalt series. According to polarizing microscopic study, Au (Augite), P1 (Plagioclase), and O1 (Olivine) are contained as phenocryst minerals. (3) Gorely Cave in Kamchatka Peninsula, Russia Gorely caldera is located at the southeastern part of Kamchatka Peninsula, about 75km southwest of Petropavlovsk-Kamchatskiy.. Gorely lava caves are situated in NHE area of Mt. Gorely volcano (1829m a.s.1.). One of lava cave (Go-9612=K-1) lies at $158^{\circ}00'22"$ east longitude and $52^{\circ}36'18"$ north latitude. The elevation of cave entrance is about 990m a.s.1. and the main cave extends in the NNW direction for about 50m by 15m wide and 5m in depth. The cave of K-3is near the K-1 cave. "@Lava hand-specimens K-1 and K-3 caves are studied by X-ray fluorescence analysis and polarizing microscopic observation. Average major chemical components of specimens from these caves are as follows (wt.%) ;($SiO_2$=55.12, $TiO_2$=1.25, $Al_2O_3$=16.07, T-FeO* =9.41, MnO=0.16, MgO=5.01, CaO=7.21, $Na_2O$=3.39, $K_2O$=1.92, $P_2O_5$=0.45) and these values indicate that the Gorely basaltic andesite belong to high alumina basalt. Polarizing microscopic study indicates that these specimens are described of Augite andesite.

The Role of Blind Protected Specimen Brushing (PSB) in Intubated Patients (기관 삽관 중인 환자에서 Blind Protected Specimen Brushing의 역할)

  • Yoo, Hee Seung;Hong, Ji Hyun;Yoon, Jang Uk;Eom, Kwang-Seok;Lee, Jae Myung;Kim, Chul Hong;Jang, Seung Hun;Kim, Dong Gyu;Lee, Myung Goo;Hyun, In Gyu;Jung, Ki-Suck
    • Tuberculosis and Respiratory Diseases
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    • v.55 no.1
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    • pp.59-68
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    • 2003
  • Background : In intubated patients, cultures of endotracheal aspirates (EA) are apt to contamination throughout the endotracheal tube. Therefore, the identification of etiologic agents via conventional EA cultures is not always reliable. In order to differentiate a pulmonary infection from a non-infectious disease, and to identify the true etiologic agent of acute pulmonary infection, blinded protected specimen brushing (PSB) was used, and its efficacy evaluated. Methods : In 51 intubated patients, with suspected pneumonia, blind PSB were performed, and the results compared with blood and EA cultures. A protected specimen brush was introduced through the endotracheal tube, and settled at the affected large bronchus. A specimen brush was introduced to the expected region using the blind method. The tip of the brush was introduced with an aseptic technique after vigorously mixed for 1 minute in $1cm^3$ of Ringer's lactate solution. The specimens were submitted for quantitative culture within 15 minutes, with a culture being regarded as positive if the colony forming units were above $10^3/ml$. Results : Of the 51 patients, 15 (29.4%) had community-acquired pneumonia (CAP), 27 (52.9%) hospital-acquired pneumonia (HAP) and 9 (17.6%) non-infectious diseases. The sensitivity and specificity of the quantitative PSB culture for the diagnosis of pneumonia were 52.4 and 88.9%, respectively. The sensitivity and specificity of EA were 78.6 and 77.8%, respectively. The blind PSB was superior to the EA for the identification of true etiologic agents. Of 53 episodes of 27 HAP patients, MRSA (Methicillin-resistant staphylococcus aureus) (41.5%) was the most common causative agent followed by Pseudomonas aeruginosa (15.1%), Klebsiella sp. (7.5%) and Acinetobacter sp. (7.5%). Conclusions : As a simple, non-invasive diagnostic modality, the blind PSB is a useful method for the differentiation of a pulmonary infection from non-infectious diseases and to identify the etiologic agents in intubated patients. A blind PSB can be performed without bronchoscopy, so is safer, more convenient and cost-effectiveness for patients where bronchoscopy can not be performed.

A Survey Research on Family Health Care : Focusing on Married Women in Seoul (가족 건강관리 행위에 관한 조사연구 -서울시내 일부 기혼부인들을 대상으로-)

  • 주혜진;김초강
    • Korean Journal of Health Education and Promotion
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    • v.13 no.1
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    • pp.1-27
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    • 1996
  • Recently diseases related to personal health habit and lifestyle have become common in modern industrial society. These kinds of diseases can be prevented simply by changing one's lifestyle to be more healthy. As a result of realization our interest in general health has become stronger. The most basic environment for human-being in society is the home. Humans secure their livelihood, physically. mentally, and socially at home. Therefore health care at home is very important. In modern society the responsibility for this task is traditionally given to housewives. The purpose of this study was to measure the degree of the health knowledge, health concern, health behavior and family health care of the married women and to analyze its related factors. The subjects for this study. 1,100 married women who studied at social education institutes and who had children attending an elementary school or a kindergarten, were surveyed with questionnaires. The preliminary survey was carried out from Aug. 7, to Aug. 19, 1995. With complement of questions, the main survey was carried out from Sep. 11, to Sep. 30, 1995. The data was analysed by using the SAS program. The results were as follows. 1. General Characteristics (1) In the individual characteristics of the respondents, the married women aged 30-39 were 54.8%, the average age was 39.8 years old. 33.8% of respondents had 6-10 years of marriage period, and the average marriage period was 14.9 years. Most of them(96.5%) lived with their husband. Those who graduated from college and graduate school were 53.4%. And 68.3% of respondents had no job. (2) In the family characteristics, 69.3% of the married women had 3 or 4 family members and the average family size was 4.1 person. 60.0% of the respondents had 2 children. Most of the respondents(90.9%) had no married children. 84.8% of the respondents lived with their parents. Those who reported that the total family income was more than 2,500,000 won a month were 32.3%. When making the decisions, 68.5% of the married women discussed the family matter with their husband. (3) In the individual characteristics of the respondents, 51.5% answered they were in good health. 61.7% of the married women answered they obtained the health knowledge through mass media. 24.3% of the women answered they had patients in their family in these days. 67.5% of the respondents answered they could generally control their health by themselves. 2. The Health Knowledge, Concern and Behavior. (1) For the health knowledge, the average score was 11.8. The lowest percent of correct answer(27.8%) was in the item about the skin tests for tuberculosis. And the highest percent(97.%) was in the item about taking a rest. (2) For the health concern, the married women had the highest concern about washing hands. But they were indifferent to smoking. (3) For the health behavior, the highest score was in "changing socks and underwear everyday", and the lowest one was in "taking a regular dental examination". 3. The Family Health Care (1) For the family health care, the item of "using a drug with the order of doctor or pharmacist" had the highest grade(4.78), and "consulting with the family physician about the health problem" had the lowest grade(2.03). (2) Older women and the women with a longer period of marriage had the highest level of the family health care(p<0.001). The married women who had 3 children had the highest level of the family health care(p<0.001). Those who had 5 or 6 family member and higher income had the highest level had the high level of the family health care(p<0.01). Women in good health and those who had the health knowledge from health experts had a high level of the family health care. (3) For the correlation of the family health care and other variables, the health behavior showed the highest correlation with family heath care practice(r=0.74) and the second was health concern(r=0.43). The variables which could explain the family health care were health behavior, the health concern and married women's health status(r²=55.87). The most closely associated with family health care was health behavior(r²=54.93)

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Studies on the Effects of Several Factors on Soil Erosion (토양침식(土壤侵蝕)에 작용(作用)하는 몇가지 요인(要因)의 영향(影響)에 관(關)한 연구(硏究))

  • Woo, Bo Myeong
    • Journal of Korean Society of Forest Science
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    • v.29 no.1
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    • pp.54-101
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    • 1976
  • This study was conducted on the major factors affecting soil erosion and surface run-off. In order to investigate the processes and mechanisms of soil erosion on denuded forest-land in Korea, and to systematize the magnitudes of influences and interactions between individual factors, the five major factors adopted in these experiments are soil textures (coarse sand and clay loam), slope steepness ($10^{\circ}$, $20^{\circ}$, $30^{\circ}$ and $40^{\circ}$), rainfall intensities (50, 75 and 100mm/hr), slope mulching methods (bare, coarse straw-mat mulching, grass mulching and anti-erosion liquid mulching) and vegetation densities (sparse, moderate and dense). The processes and mechanisms of soil erosion, and the effects of mulchings on soil erosion as well as surface run-off rates were studied algebraically with four parts of laboratory experiments under the simulated rainfall and another part of field experiment under the natural rainfall. The results in this study are summarized as follows: 1. Experiment factors and surface run-off rates The surface run-off rates under the natural rainfall were resulted about 24.7~28.7% from the bare slopes, about 14.0~16.4% from the straw-mat mulched slopes, about 7.9~9.1% from the liquid mulched slopes, and about 5.6~7.2% from the grass mulched slopes respectively. The surface run-off rates under the simulated rainfall differed greatly according to the rainfall intensity and the mulching method. 2. Magnitudes of influences and interactions of the individual factor on the surface run-off rates. The experimental analyses on the major factors(soils, slopes, rainfalls, mulchings and vegetations) affecting the rates of surface run-off, show that the mean differences of surface run-off rate are significant at 5% level between the soil texture factors, among the slope steepness factors, among the rainfall intensity factors, among the mulching method factors, and among the vegetation density factors respectively. The interactions among the individual factor have a great influence(significant at 1% level) upon the rate of surface run-off, except for the interactions of the factors between soils and slopes; between slopes and vegetations; among soils, slopes and rainfalls; and among soils, slopes and mulchings respectively. On the bare slopes under the simulated rainfall, the magnitude of influences of three factors(soils, slopes and rainfalls) affecting the rate of surface run-off is in the order of the factor of rainfalls, soils and slopes. The magnitude of influences of three factors (soils, rainfalls and mulchings) affecting the rate of surface run-off, on the mulched slopes under the simulated rainfall is in the order of the factor of mulchings, rainfalls and soils and that of influences of the factor of soils, slopes and mulchings is in the order of the factor of mulchings, soils and slopes. On the vegetation growing slopes under the simulated rainfall, the magnitude of influences of three factors (soils, slopes and vegetations) affecting the rate of surface run-off is in the order of the factor of vegetations, soils and slopes. In the same condition of treatments on the field experiment under the natural rainfall, the order of magnitude of influences affecting the rate of surface run-off is the factor of mulchings, soils and slopes. 3. Experiment factors and soil losses The soil losses of the experiment plots differed according to the factors of soil texture, slope steepness, rainfall intensity and mulching method. The soil losses from the coarse soil were increased about 1.1~1.3 times as compared with that of fine soil under the natural rainfall, while the soil losses from the fine soil were increased about 1.2~1.3 times compared with that of coarse soil under the simulated rainfall. The equation of $E=aS^b$ (a, b are constant) between the slope steepness (log S) and soil losses (log E) under the simulated rainfall were developed. The equation of $E=aI^b$ (a, b are constant) between the rainfall intensity (log I) and soil losses (log E) were developed, and b values have a decreasing tendency according to the increase of the slope steepness and rainfall intensity. The soil losses under the natural rainfall were appeared about 38~41% from the coarse straw-mat mulched slopes, about 20~22% from the liquid mulched slopes, about 14~15% from the grass mulched slopes as compared with that of the bare slopes respectively. The soil loss from the vegetation plots showed about 7.1~16.4 times from the sparse plot, about 10.0~17.9 times from the moderate plot and about 11.1~28.1 times from the dense plot as compared with that of the bare slopes. 4. Magnitudes of influences and interactions of the individual factor on the soil erosion. The experimental analyses on the major factors(soils, slopes, rainfalls, mulchings and vegetations) affecting the soil erosion, show that the mean differences of soil losses are highly significant between the soil texture factors, among the slope steepness factors, among the rainfall intensity factors, among the mulching method factors and among the vegetation density factors respectively. The interactions among the individual factor have mostly great influences upon the soil erosion. The magnitude of influences of three factors (soils, slopes and rainfalls) affecting the soil erosion on the bare slopes under the simulated rainfall is in order of the factor of rainfalls, soils and slopes. On the mulched slopes under the simulated rainfall, the magnitude order of influences of three factors(soils, rainfalls and mulchings) affecting the soil erosion is the factor of mulchings, rainfalls and soils, and the order of influences of factor of soils, slopes and mulchings is the factor of mulchings, soils and slopes. On the vegetation growing slopes under the simulated rainfall, the magnitude of influences of three factors (soils, slopes and vegetations) affecting the soil erosion is in the order of the factor of slopes. vegetations and soils. In the same condition of treatments on the field experiment under the natural rainfall, the order of magnitude of influences of three factors (soils, slopes and mulchings) affecting the soil erosion is the factor of mulchings, of slopes and of soils.

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Studies on the Growth Characteristics of Bifidobacteria, Organic Acids and n-hexanal Contents During the Fermentation of Enzyme Treated Soy Yogurt (효소처리 분리대두단백의 요구르트 발효 중 비피더스균의 생육특성 및 유기산과 n-hexanal 함량에 관한 연구)

  • 이숙영;이정은;박미정;권영실
    • Korean journal of food and cookery science
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    • v.14 no.5
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    • pp.589-596
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    • 1998
  • This study was carried out to evaluate the quality attributes of soy yogurts prepared by different types of oligosaccharides (fructooligosaccharide, galactooligosaccharide , isomaltooligosaccharide) and Bifidobacteria (B. bifidum B. breve, B. infantis) containing enzyme treated soy protein isolate in terms of pH, titratable acidity, total number of viable cells of Bifidobacteria, ${\alpha}$-galactosidase activity, organic acids, volatile compounds. The pH values of soy yogurts fermented by B. bifidum showed the highest significantly but those fermented by B. infantis showed the lowest significantly, while the titratable acidity of soy yogurts were vice versa. The viable cells of Bifidobacteria of all soy yogurts showed more than 10$\^$9/ CFU/ml and soy yogurts fermented by B. infantis showing below pH 4.6 showed more than 10$\^$9/ CFU/ml after storage at 4$^{\circ}C$ for 7 days. The activity of ${\alpha}$-galactosidase showed the highest in the culture of B. infantis among the Bifidobacteria tested. Among the Bifidobacteria tested, the contents of lactic acid and acetic acid showed the highest in soy yogurts fermented by B. infantis but citric acid and propionic acid were the lowest. Among the Bifidobacteria tested, the contents of n-hexanal showed the highest in soy yogurts fermented by B. breve and a little amounts of acetaldehyde were present in all soy yogurts.

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Clinical Investigation of Childhood Epilepsy (소아간질의 임상적 관찰)

  • Moon, Han-Ku;Park, Yong-Hoon
    • Journal of Yeungnam Medical Science
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    • v.2 no.1
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    • pp.103-111
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    • 1985
  • Childhood epilepsy which has high prevalence rate and inception rate is one of the commonest problem encountered in pediatrician. In contrast with epilepsy of adult, in childhood epilepsy, more variable and varying manifestations are found because the factors of age, growth and development exert their influences in the manifestations and the courses of childhood epilepsy. Moreover epileptic children have associated problems such as physical and mental handicaps, psychologicaldisorders and learning disability. For these reasons pediatrician who deals with epileptic children experiences difficulties in making diagnosis and managing them. In order to improve understanding and management of childhood epilepsy, authors reviewed 103 cases of epileptic patients seen at pediatric department of Yeungnam University Hospital retrospectively. The patients were classified according to the type of epileptic seizure. Suspected causes of epilepsy, associated conditions of epileptic patients, age incidence and the findings of brain CT were reviewed. Large numbers of epileptic patients (61.2%) developed their first seizures under the age of 5. The most frequent type of epileptic seizure was generalized ionic-clonic, tonic, clonic seizure (49.5%), followed by simple partial seizure with secondary generalization (17.5%), simple partial seizure (7.8%), a typical absence (5.8%) and unclassified seizure (5.8%). In 83.5% of patients, we could not find specific cause of it, but in 16.5% of cases, history of neonatal hypoxia (4.9%), meningitis (3.9%), prematurity (1.9%), small for gestational age (1.0%), CO poisoning (1.0%), encephalopathy (1.0%), DPT vaccination (1.0%), cerebrovascular accident (1.0%) and neonatal jaundice (1.0%) were found, 30 cases of patients had associated diseases such as mental retardation, hyperactivity, delayed motor milestones or their combinations. The major abnormal findings of brain CT performed in 42 cases were cortical atrophy, cerebral infarction, hydrocephalus and brain swelling. This review stressed better designed classification of epilepsy is needed and with promotion of medical care, prevention of epilepsy is possible in some cases. Also it is stressed that childhood epilepsy requires multidisplinary therapy and brain CT is helpful in the evaluation of epilepsy with limitation in therapeutic aspects.

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The Roles of the TSH Receptor Antibodies in Autoimmune Thyroid Diseases (자가면역성 갑상선질환에서 TSH 수용체 항체의 역활에 관한 연구)

  • Koh, Chang-Soon
    • The Korean Journal of Nuclear Medicine
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    • v.20 no.2
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    • pp.85-100
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    • 1986
  • To evaluate the clinical and pathogenetic roles of TSH receptor antibodies in autoimmune thyroid diseases, TBII were measured by TSH-radioreceptor assay methods in 352 patients with Graves' disease, 108 patients with other thyroid diseases and 69 normal persons. The normal range of TBII activity was less than 15%. The frequencies of detectable TBII in 169 patients with untreated Graves' disease, 31 patients with hyperthyroidism under treatment and 70 patients with euthyrodism under treatment were 92.4%, 87.1% and 54.3% respectively. However 12 (21.8%) out of 55 patients who have been in remission more than one year after discontinuation of antithyroid drugs treatment had detectable TBII activities in their sera. In 196 patients with untreated Graves' disease, the frequency of TBII increased by increasing size of goiter and the frequency of proptosis was significantly high in patients whose TBII activities were more than 60%. TBII activities were roughly correlated with total $T_3,\;T_4$ and free $T_4$ index but low $\gamma^2$ value(less than 0.1). In 67 patients with Graves' disease who were positive TBII before antithyroid drugs treatment, TBII activities began to decrease from the third months and it was converted to negative in 35.8% of patients at 12 months after treatment. There were no significant differences of the declining and disappearing rates of TBII activities between high dose and conventional dose groups. TBII activities were significantly increased initially (2-4 months) and then began to decrease from 5-9 months after $^{131}I$ treatment. There were two groups, one whose TBII activities decreased gradually and the other did not change untill 12 months after subtotal thyroidectomy. Although preoperative clinical and laboratory findings of both groups were not different, TBII activities of non-decreasing group were significantly higher than those of decreasing group$(74.6{\pm}18.6%\;vs\;39.2{\pm}15.2%;\;P<0.01)$. Thirty three(55.9%) out of 59 patients with Graves' disease relapsed within 1 year after discontinuation of antithyroid drugs. The positive rate of TBII at the end of antithyroid drug treatment in relapse group(n=33) was significantly higher than those in remission group (n=26) (63.6% vs 23.1%; P < 0.05). The mean value of TBII activities at the end of antithyroid drug treatment in relapse group was significantly elevated $(29.7{\pm}21.4%\;vs\;14.7{\pm}11.1%,\;P<0.05)$. Positive predictive value of TBII for relapse was 77.8%, which was not different from those of TRH nonresponsiveness(78.6%). The frequencies of detectable TBII in 68 patients with Hashimoto's thyroiditis, 10 patients with painless thyroiditis and 5 patients subacute thyroiditis were 14.7%, 20% and 0%, respectively. However in 25 patients with primary nongoitrous myxedema, 11 patients(44%) showed TBII activities in their sera. 9 out of 11 patients who had TBII activities in their sera showed high TBII activities(more than 70% binding inhibition) and their IgG concentrations showing 50% binding inhibition of $^{125}I-bTSH$ to the TSH receptor were ranges of 0.1-2.6 mg/dl. One patient who had high titer of TBII in her serum delivered a hypothyroid baby due to transplacental transfer of maternal TBII. These findings suggested that 1) TSH receptor antibodies are closely related to a pathogenetic factor of Graves' hyperthyroidism and of some patients with primary non-goitrous myxedema, 2) measurement of TSH receptor antibodies is helpful in evaluating the clinical outcome of patients with Graves' disease during antithyroid drug treatment and in predicting the neonatal transient hypothyroidism of baby delivered from primary myxedema patients. 3) there are 2 or more different types of TSH receptor antibodies in autoimmune thyroid diseases including one which stimulates thyroid by binding to the TSH receptor and another which blocks adenylate cyclase stimulation by TSH.

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The Usefulness of Serologic Diagnosis for Tuberculosis with Two Rapid Immunochromatographic Assay Devices (혈청학적 방법을 이용한 결핵 진단 방법의 효용성)

  • Kim, Deog-Kyeom;Kwon, Sung-Youn;Lee, Suk-Young;Park, Gye-Young;Jung, Kyung-Hae;Lee, Chun-Taek;Yoo, Churl-Gyoo;Kim, Young-Whan;Han, Sung-Koo;Shim, Yong-Soo
    • Tuberculosis and Respiratory Diseases
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    • v.47 no.5
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    • pp.586-597
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    • 1999
  • Background: Many diagnostic tests have developed to diagnose tuberculosis and other mycobacterial diseases but the diagnosis of tuberculosis relies largely on radiological findings and acid-fast staining of sputum and/or culture. Recently, new serologic diagnostic methods, which are safe and easy to use have been introduced into Korea. In this study, the usefulness of serologic diagnosis for tuberculosis and the disease pattern induced variation of the test were evaluated. Methods: Serological assay was performed upon 108 patients with two test kits, the ICT tuberculosis and the BioSign$^{TM}$TB, which are based upon a rapid immunochromatographic assay technique, capable of being interpreted within 15 minutes. The case groups consisted of 61 patients with active pulmonary tuberculosis(36 patients), extrapulmonary tuberculosis(3 patients), or both(22 patients). Control groups consisted of 47 patients with inactive old pulmonary tuberculosis(17 patients), nontuberculous pulmonary disease(16 patients) and nonpulmonary cardiac disease(14 patients). Results : The diagnostic sensitivity, specificity, positive predictive value(PPV) and negative predictive value(NPV) of the ICT tuberculosis were 64.3%, 91.5%, 90.0% and 68.3% respectively. The diagnostic sensitivity, specificity, PPV and NPV of the BioSign$^{TM}$TB were 76.5%, 95.3%, 94.1 % and 78.8% respectively. Differences in sensitivity were not significant between patients with previous history of tuberculosis or patients without prior history of tuberculosis. The ICT tuberculosis test showed higher sensitivity in pulmonary tuberculosis patients(76.5%) than extrapulmonary tuberculosis patients(33.3%). There was no difference in sensitivity between patients with or without cavitary lesion by chest X-ray. Conclusion: Considering high specificity and PPV, serologic diagnosis using a rapid immunochromatographic assay device is another helpful diagnostic method in the diagnosis of tuberculosis, when combined with previous diagnostic methods such as chest X-ray, microbiologic study but it has limitation in terms of confirming the diagnosis for tuberculosis as the only diagnostic method because of relatively low sensitivity and NPV.

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An Analysis of Factors That Affect Image Quality Deterioration in The Potable X-ray Examination on using Digital Wireless Detector (디지털 무선 검출기를 이용한 이동형 X선검사에서 영상품질 저하의 요인분석)

  • Yu, Young-Eun;Lim, Cheong-Hwan;Ko, Joo-Young
    • Journal of radiological science and technology
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    • v.37 no.2
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    • pp.93-100
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    • 2014
  • Recently the development of portable digital wireless imaging system, which acquires digital radiation images by using wireless LAN telecommunications function in an easy and fast way, provides lots of convenience for people. Considering the characteristics of portable imaging tests on emergency and critical patients, this study aims to suggest guidelines for Digital wireless detector by evaluating the effect of de-centering of focus-grid and displacement of subject in detector on the quality of image. The equipments used for this study were Elmo-T6 Digital Mobile X-ray system (SIMAZU Corp.), el' Tor ($14{\times}17$ "Wireless detector), Grid (10:1) and Chest & head phantom. After acquiring post-processing image according to dose increase and de-centering image of grid-focus and head phantom displacement image, this study compared, analyzed and evaluated these images by using a digital image analysis program by Image J. In the change of images based on dose increase, images were rough in the dose of 0.5 mAs, while there was no difference among images in the proper dose of 1~2 mAs and, especially from 2.5 mAs, average value of pixels radically decreased, affecting contrast. Over 3 mAs, contrast dropped due to saturation phenomenon of lungs. As the result of analysis using Image J program, with the increase of displacement between focus-grid and head phantom, the frequency of low pixel value also increase, causing the outline of surface image to disappear, which in turn affects contrast. For better quality imaging, a radiographer must be aware before the time of test that the image quality can be changed based on the critical patient's posture, movement, respiration, displacement of X-ray tube and distance of imaging.

Development of Cyber R&D Platform on Total System Performance Assessment for a Potential HLW Repository ; Application for Development of Scenario through QA Procedures (고준위 방사성폐기물 처분 종합 성능 평가 (TSPA)를 위한 Cyber R&D Platform 개발 ; 시나리오 도출 과정에서의 품질보증 적용 사례)

  • Seo Eun-Jin;Hwang Yong-soo;Kang Chul-Hyung
    • Proceedings of the Korean Radioactive Waste Society Conference
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    • 2005.06a
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    • pp.311-318
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    • 2005
  • Transparency on the Total System Performance Assessment (TSPA) is the key issue to enhance the public acceptance for a permanent high level radioactive repository. To approve it, all performances on TSPA through Quality Assurance is necessary. The integrated Cyber R&D Platform is developed by KAERI using the T2R3 principles applicable for five major steps in R&D's. The proposed system is implemented in the web-based system so that all participants in TSPA are able to access the system. It is composed of FEAS (FEp to Assessment through Scenario development) showing systematic approach from the FEPs to Assessment methods flow chart, PAID (Performance Assessment Input Databases) showing PA(Performance Assessment) input data set in web based system and QA system receding those data. All information is integrated into Cyber R&D Platform so that every data in the system can be checked whenever necessary. For more user-friendly system, system upgrade included input data & documentation package is under development. Throughout the next phase R&D, Cyber R&D Platform will be connected with the assessment tool for TSPA so that it will be expected to search the whole information in one unified system.

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