• Nuclear Medicine and Molecular Imaging
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• v.41 no.4
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• pp.291-298
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• 2007

Purpose: To investigate the feasibility of TI-201 SPECT with intra coronary injection (lC-I) in the detection of viable myocardium, we have performed SPECT imaging after direct intracoronary injection of TI-201 and images were compared with those of stress-reinjection (Re-I) SPECT. Methods: Fourteen coronary artery disease patients (male 11, mean age 54 years) who had myocardial infarction or demonstrated left ventricular wall motion abnormality on echocardiography were enrolled. Three mCi of TI-201 was injected into both coronary arteries during angiography and images were acquired between 6- and 24-hour after injection. Reinjection imaging with 1 mCi of TI-201 was performed at 4-hour after adenosine stress imaging with 3 mCi of TI-201. Images were interpreted according to 4-grade visual scoring system (grade 0-3). Segments with mild to moderated uptake (${\leq}$grade 1), and upgraded more than one score with reinjection, and were defined as viable myocardium. Results: Image quality was poor in two cases with IC-I. Numbers of non-viable segments were 60 (23.8%) with IC-I, and 38 (15.1%) with Re-I, respectively. Overall agreement for perfusion grade per myocardial segment in each IC-I and Re-I was 76.5%. Overall agreement for viable segment between IC-I and Re-I was 90.5%. Only one out of 38 segments interpreted as non-viable with Re-I were interpretated as viable with IC-I. And 23 out of 214 segments interpreted as viable with Re-I were interpreted as non-viable with IC-I. Conclusion: Intracoronary TI-201 SPECT seemed to be not advantageous over stress-rest reinjection imaging in the assessment of myocardial viability, mainly due to low count statistics at 6-hour or 24-hour delayed time points. The feasibility of intracoronary TI- 201 SPECT is considered to be limited.

• The Journal of Korean Society for Radiation Therapy
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• v.26 no.2
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• pp.217-224
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• 2014

Purpose : Conventional, IMRT, at CSI treatment with VMAT, this study compare the treatment plan with dose changes measured at Junction field according to the error of Setup. Materials and Methods : This study established Conventional, the IMRT, VMAT treatment planning for CSI therapy using the Eclipse 10.0 (Eclipse10.0, Varian, USA) and chose person in Seoul National University Hospital. Verification plan was also created to apply IMRT QA phantom for each treatment plan to the film measurements. At this time, the error of Setup was applied to the 2, 4, 6mm respectively with the head and foot direction. ("+" direction of the head, "-" means that the foot direction.) Using IMRT QA Phantom and EBT2 film, was investigated by placing the error of Setup for each Junction. We check the consistency of the measured Film and plan dose distribution by gamma index (Gamma index, ${\gamma}$). In addition, we compared the error of Setup by the dose distribution, and analyzing the uniformity of the dose distribution within the target by calculating the Homogeneity Index (HI). Results : It was figured out that 90.49%-gamma index we obtained with film is agreement with film scan score and dose distribution of treatment plan. Also, depend on the dose distribution on distance, if we make the error of Setup 2, 4, 6mm in the head direction, it showed that 3.1, 4.5, 8.1 at $^*Diff$(%) of Conventional, 1.1, 3.5, 6.3 at IMRT, and 1.6, 2.5, 5.7 at VMAT. In the same way, if we make the error of Setup 2, 4, 6mm in the foot direction, it showed that -1.6, -2.8, -4.4 at $^*Diff$(%) of Conventional, -0.9, -1.6, -2.9 at IMRT, and -0.5, -2.2, -2.5 at VMAT. Homogeneity Index(HI)s are 1.216 at Conventional, 1.095 at IMRT and 1.069 at VMAT. Discussion and Conclusion : The dose-change depend on the error of Setup at the CSI RT(radiation therapy) using IMRT and VMAT which have advantages, Dose homogeneity and the gradual dose gradients on the Junction part is lower than that of Conventional CSI RT. This a little change of dose means that there is less danger on patients despite of the error of Setup generated at the CSI RT.

• Journal of agricultural medicine and community health
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• v.35 no.1
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• pp.89-98
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• 2010

Objectives: The purpose of this research was to evaluate the ability of completing death certificates among medical students. Methods: The self-administered questionnaires were completed, during May to August 2007, by 380 medical students in senior. The questionnaire was composed of 10 cases to write the death certificate. The cause-of-deaths written by students were compared with the gold standards and their errors in the certificates also evaluated. Results: Mean agreement score for 10 underlying cause-of-deaths completed on the lowest line of part I in the death certificate (UC1) was $4.8{\pm}1.7$, and for underlying cause-of-death selected by a coder of the death certificates (UC2) was $5.6{\pm}1.5$. The UC1 and UC2 were significantly higher among the students having the case-oriented education for death certificate than others. For the major errors in the certificates completed by students, the students having the error with no antecedent cause were highest, the error with two or more conditions secondly highest. Mean number of errors was significantly lower in the case-oriented education group than others. Conclusions: Errors are common in the death certificates completed by medical students in senior. The accuracy of death certification may be more improved with the case-oriented education than the traditional method.

• Journal of Korean society of Dental Hygiene
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• v.16 no.3
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• pp.355-362
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• 2016

Objectives: This study aimed to develop a tool for assessing foreigners' understanding of oral health information in Korea called the Test of Korean Functional Health Literacy in Dentistry(TOKFHLiD) and examined validity and reliability of the tool. The TOKFHLiD consists of two literacy assessment parts: Dental Information Sentence(DIS) aims to assess one's literacy of sentences containing oral health information. Dental Information Document(DID) aims to assess one's numeracy and literacy of documents containing oral health information. Methods: Twenty eight preliminary questions were developed based on various medical care literature such as the agreement to diagnosis and treatment and the treatment precautions. DID using 14 preliminary questions was developed based on the appointment card, the treatment schedule, and labels on oral care products. The 42 preliminary questions in the DIS and the DID were subsequently put through four separate expert reviews, in which questions with content validity score of less than 0.8(13/15 points) were corrected and modified by five dental experts and then were corrected for language errors by two Korean language experts. The preliminary assessment tool was tested on 153 Koreans, and ${\chi}^2$ test was performed on the ratio of respondents who comprehended each question, the ratio of respondents who chose the correct answer for each question with a significance level of 0.05. Results: Of the 42 preliminary questions, 1 question in DIS and 1 question in DID, for which the ratio of Korean respondents who chose the correct answers did not exceed the acceptable level of 80%, were excluded and a final assessment tool was completed with 40 questions. Conclusions: Following the development and application of the tool, examination of the TOKHLiD for validity and reliability revealed that this assessment tool is adequate for assessing oral health information literacy of foreigners who are using oral hygiene medical services in Korea.

• Journal of Technologic Dentistry
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• v.23 no.2
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• pp.121-149
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• 2002

This Study aims at investigating the tendency of individual problems that the students at the departments of dental technology are faced with, their efforts and types of activities to solve the problems. Surveyed for this purpose were 700 freshmen to juniors enrolled in the departments of dental technology at the universities across the country and they were analyzed by area, grade and sex. 1. Tendency of Problems The areas of problems the students at the departments of dental technology considered as most serious were health, human relation, view of value and economy in sequence, while the areas they considered as least serious were future course and employment. In general, there were tendencies as follows: divided by grade, the higher the grades of the students are, the higher scores of problems they get(F=12.14, P=.000) : in the areas of health and human relation, as the grade gets higher, the scores of their problems also increase, accordingly(F= 17.58, P=.000)(F=8.39, P=.000) : in the areas of economy, parents and home, freshmen and juniors are found to have higher scores of problems compared to sophomores,:F=7.89, P=.000)(F=11.63, P=.000) : divided by sex, female students recorded higher scores of problems than their counterparts(F=31.85, P=.000) 2. Efforts for Problems View of value, human relation, parents and home appeared to be the areas for which the students made the highest rate of efforts in sequence while the areas for which they paid lowest grade of efforts were health and economy. In other words, the students gave higher scores for human relation and view of value in terms of tendency as well as efforts of problems, while they rated high for health and economy in the tendency but low in the efforts of problems. Divided by grade, freshmen and juniors appeared to score higher points than sophomores in their efforts to solve problems, even though juniors made relatively higher efforts than freshmen(F=6.53, P=.002). Divided by sex, female students scored higher points in their efforts than males(F=15.98, P=.000) 3. Difference of Efforts to Solve Problems. In the analysis into the scores of difference showing the disagreement between the tendency of problems and the efforts to solve problems, the area of health was rated as highest, followed by economy. There was little difference of scores between human relation and view of value, an indicator of agreement between the scores of problems and efforts. The difference of scores between future course and employment, between liberal arts and recreation, between characters/parents and home/school work turned out to be negative in the listed sequence, leading to a conclusion that the students enrolled in the departments of dental technology are making more efforts to solve problems than actually needed in most areas. By grade, there was a significant difference only in the area of health(F=3.00, P=.050). This difference itself was widening as the students come to higher grades. By sex, females showed bigger difference than males. 4. Types of Activities to Solve Problems. The analysis into types of activities to solve problems revealed that the surveyed students seemed to actively cope with the problems in all areas, relying at the same time on personal relationship. Especially in the areas of health, economy, parents, home, human relation, future course and employment, the students appeared to deal with the problems actively as well as emotionally.

• Journal of the korean academy of Pediatric Dentistry
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• v.32 no.3
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• pp.517-524
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• 2005

Despite the widespread use of chloral hydrate with hydroxyzine in the sedation of children, there is little agreement among pediatric dentists regarding its therapeutic dosage for the management of very uncooperative young children. Also, increasing concern has been raised with respect to its frequent failure to provide adequate levels of sedation when used according to the manufacturer's recommended dosage. Therefore, there has been many suggestions with respect to sedative effectiveness and safety of varying drug dosage, and some pediatric dental articles have advocated dosages exceeding manufacturer's recommendations. This study was performed to compare the effectiveness and safety in behavior management of the manufacturer's recommended dose of chloral hydrate(50mg/kg) with those of a higher dose(70mg/kg) used together with hydroxyzine(2mg/kg) and nitrous oxide(50%) when young children were sedated for dental treatment. The following results were obtained; 1. II group(70mg/kg) displayed higher mean score compared to I group(50mg/kg) with regard to the degree of sleep, crying, movement and overall behavior. The difference was statistically significant(p<0.05). 2. In comparison of success rates for sedation between the two groups, I group and II group showed 38.7% and 71.0% success rates respectively. An analysis of variance was statistically significant(p<0.05). 3. Comparing the occurrence rate hypoxia between the two groups, there were 22.6% and 19.4% occurrence of hypoxia in I group and II group. An analysis of variance was not statistically significant(p>0.05).

• Korean Journal of Health Psychology
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• v.14 no.3
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• pp.579-596
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• 2009

This study aimed to develop the Korean tool of competency to consent to psychiatric treatment and to analyze the reliability and validity of this tool. Also the developed tool's efficiency in determining whether a patient possesses treatment consent competence was checked using the Receiver Operating Characteristic curve and the relevant indices. A total of 193 patients with mental illness, who were hospitalized in a mental hospital or were in community mental health center, participated in this study. We administered a questionnaire consisting of 14 questions concerning understanding, appreciation, reasoning ability, and expression of a choice to the subjects. To investigate the validity of the tool, we conducted the K-MMSE, insight test, estimated IQ, and BPRS. The tool's reliability and usefulness were examined via Cronbach's alpha, ICC, and ROC analysis, and criterion related validation was performed. This tool showed that internal consistency and agreement between raters was relatively high(ICC .80~.98, Cronbach's alpha .56~.83)and the confirmatory factor analysis for constructive validation showed that the tool was valid. Also, estimated IQ, and MMSE were significantly correlated to understanding, appreciation, expression of a choice, and reasoning ability. However, the BPRS did not show significant correlation with any subcompetences. In ROC analysis, full scale cutoff score 18.5 was suggested. Subscale cutoff scores were understanding 4.5, appreciation 8.5, reasoning ability 3.5, and expression of a choice 0.5. These results suggest that this assessment tool is reliable, valid and efficient diagnostically. Finally, limitations and implications of this study were discussed.