• The Korean Journal of Nuclear Medicine
• /
• v.26 no.1
• /
• pp.40-48
• /
• 1992

Gated blood pool scan is frequently used for evaluating the change in cardiac function in various cardiac diseases. But resting gated blood pool scan using only LVEF as a cardiac index has been consitently shown to have a low sensitivity, which is about 50%, in detecting coronary artery disease. So it is recommended to compare exercise gated blood pool scan to resting gated blood pool scan. Exercise tests, however, are not always possible, especially in patients with musculoskeletal diseases, recent myocardial infarction and in elderly persons. We studied the usefulness of resting gated blood pool scan using multiple indices in evaluating the patients with coronary artery disease. Studied cases were 185 patients with coronary artery disease (angina pectoris 31, myocardial infarction 154) and 25 normals with low likelihood of coronary artery disease. We used $^{99m}Tc-labeled$ RBC, 740 MBq labeled by in vivo method. The data were evaluated by Micro DELTA computer program. The results were as following: 1) The ejection rates (PER, AER) and filling rates (PFR, AFR) were different in normls and patients with angina pectoris or myocardial infarction. 2) Mean phase angle, ejection rates and filling rates could separate normals from coronary artery disease patients with normal LVEF. 3) Regional ejection fraction was decreased at the site of the infarct in patients with myocardial infarction. 4) Peak filling rate was the the most detectable index in evaluation of cardiac function in patients with coronary artery disease. 5) The threshold at 1.5 standard deviation of normal range was considered as the most reliable cut-off value from ROC analysis. These data suggest that the resting gated blood pool scan has an important role in the evaluation of cardiac functional changes using various cardiac indices in patients with coronary artery disease.

• The Journal of Asian Finance, Economics and Business
• /
• v.9 no.4
• /
• pp.63-72
• /
• 2022

The study applied the non-financial dimensions of the Balanced Scorecard (customer dimension, internal processes dimension, learning, and growth dimension). It was done to evaluate performance and measure the effectiveness of these dimensions on performance evaluation at College of Science and Humanities Studies: Al Aflaj, Prince Sattam Bin Abdulaziz University. The researchers used the descriptive analytical approach to conduct the study to find the effect of these dimensions. Data was collected from the college staff and administrators; 120 questionnaires were distributed, out of which 112 were collected. The questionnaire data were analyzed using exploratory (EFA) and confirmatory factor analysis (CFA), hypotheses were tested using the structural equation modeling (SEM) through the (Spss) and (Amos) software. The study finding showed that the balanced scorecard had a positive contribution in evaluating the performance of the College of Science and Humanities Studies: Al Aflaj, Prince Sattam Bin Abdulaziz University through the dimensions of customers and internal processes, and the study finding revealed that the balanced scorecard has no contribution at performance evaluating the College of Science and Humanities Studies: Al Aflaj, Prince Sattam Bin Abdulaziz University through the dimension of learning and growth.

• The Journal of Korean Academy of Prosthodontics
• /
• v.42 no.5
• /
• pp.489-500
• /
• 2004

Statement of problem: The use of zirconia prostheses fabricated with CAD/CAM system is on an increasing trend in dentistry. However, evaluation of the fit related to internal relief and marginal reproducibility of zirconia has not been reported. Purpose : This study was to evaluate the fit related to internal relief and marginal reproducibility of zirconia core fabricated with CAD/CAM system. Materials and methods: The evaluation was based on 30 zirconia cores and 5 IPS-Empress2 cores. Zirconia cores were fabricated in different conditions of internal relief(0, 10, 20, 30, 40 and $50{\mu}m$), and IPS-Empress2 cores were fabricated in accordance with the manufacturer's instructions. Before cementation, the marginal discrepancies or cores were measured on metal die. And then, each core was cemented to stone die, embedded in an acrylic resin and sectioned in two planes(mesiodistally and labiopalatally). The internal gaps were measured at the margin and axial surface. Measurements for the marginal discrepancies, the internal marginal gaps and the internal axial gaps were performed under a measuring microscope(Compact measuring microscope STM5; Olympus, Japan) at a magnification of ${\times}100$. In addition, the marginal conagurations of metal die, zirconia core and IPS-Empress2 core were examined with SEM(S-2700, Hitachi, Japan). Results : Within the limits of this study the results were as follows. 1. Compared with IPS-Empress2 cores, the marginal discrepancies of zirconia cores had no significant differences. the internal marginal gaps were statistically smaller and the internal axial gaps were statistically larger in each condition of internal relief. 2. The marginal discrepancies and the internal marginal gaps of zirconia cores had no significant differences related to the conditions of internal relief(P>0.05). 3. The internal axial gaps of zirconia cores with $0{\sim}20{\mu}$m for internal relief were significantly larger than that with $50{\mu}m$ (P<(0.0001). 4. SEM micrographs showed favorable marginal reproducibility of zirconia core and smooth texture on the milling surface. Conclusion: The marginal discrepancy and the internal gaps of zirconia core were clinically acceptable and the milling surface was showed smooth texture. For fabrication of the durable esthetic restoration, further investigations on complex design of core, milling accuracy, compatability of enamel porcelain and porcelain firing seems to be needed.

• Proceedings of the PSK Conference
• /
• 2000.10a
• /
• pp.135-135
• /
• 2000

• The Journal of Internal Korean Medicine
• /
• v.40 no.6
• /
• pp.1063-1080
• /
• 2019

Objectives: With the aging of the population, the incidence of a variety of diseases is increasing. Cerebrovascular disease is a major cause of mortality worldwide and therefore requires timely treatment and management. We aimed to evaluate the clinical effectiveness of herbal medicines in treating cerebrovascular disease by screening the most frequently prescribed herbal medicines and analyzing the clinical data of patients with cerebrovascular disease taking these medicines. Methods: In this retrospective study, we analyzed the electronic medical records of patients with cerebrovascular disease who received herbal medication at the Pusan National University Korean Medical Hospital from 10 March 2010 to 31 March 2017. The inclusion criteria were as follows: diagnosis of cerebrovascular disease, use of frequently prescribed herbal medicines, available records of laboratory tests and functional evaluation that was conducted within two weeks before and after admission and discharge, and herbal medicine usage exceeding half the period of hospitalization. Results: Of the total patients with cerebrovascular disease, the number of patients analyzed in this study was 49. There were some changes in the various variables examined after frequently used herbal medicines had been taken, such as complete blood count, liver function test, lipid test, and functional evaluation. No serious adverse events related to herbal medicine were found in this study. Conclusions: We concluded that herbal medicines frequently used for cerebrovascular disease may have some clinical effectiveness. However, because of the retrospective nature of this study and only one hospital involved, the generalizability of our findings is limited.

• The Korean Journal of Nuclear Medicine
• /
• v.17 no.1
• /
• pp.71-78
• /
• 1983

Twenty-nine patients with neonatal jaundice were evaluated with $^{99m}Tc-HIDA$ cholescin-tigraphy to elucidate its clinical applicability. Scintigraphic results were interpreted by the degree of early hepatic uptake and the presence or absence of radioactivity in the G-I tract. The results are as follows; I) In 18 patents with neonatal hepatitis; 8 of 11 patients with decreased hepatic uptake and all 5 patients with good hepatic uptake showed G-I radioactivity. But, the 2 remainders with poor hepatic extraction were not available for evaluation of neonatal jaundice due to patient's poor hepatic function. 2) In 9 patients, confirmed as biliary obstruction; all showed no G-I radioactivity but 3 of the 9 showed poor hepatic extraction on scan and they were not available for evaluation. 3) All the 2 patients with postoperative cholangitis showed G-I radioactivity on $^{99m}Tc-HIDA$ scan. 4) Relationship between histopathologic findings and $^{99m}Tc-HIDA$ scan; Among 5 patients with biliary cirrhosis 3 showed poor hepatic extraction, the remainders showed decreased and good hepatic uptake respectively. But, the 2 portal fibrosis without cirrhosis and 4 cholestasis showed decreased (4) or good hepatic uptake (2).

• Journal of the Korean Home Economics Association
• /
• v.36 no.7
• /
• pp.69-82
• /
• 1998

The purpose of the study was to examine the adaptability of AAI(Adult Attachment Interview) in Korea. The subjects were 20 mothers who had toddlers from middle class. AAI was administrated to them. Interviews were audiotaped and transcribed verbatim. The results showed that Korean Mothers' AAI classifications were Secure-Autonomous(F) 60%, Insecure=Dismissing(Ds) 20%, Insecure-Preoccupied(E) 5%, Insecure-Unresolved/disorganized(U/d) 15%. The classification of AAI was significantly related with mothers' education, but not mothers' age. Autonomous mothers discribed consistently in evaluation of attachment-related experiences and valued attachment. Dismissing mothers showed a incoherent discourse and dismissed attachment-related experiences and relations. Preoccupied mother sticted to past attachment relationship and perplexed with evaluation of these experiences. Unresolved mothers showed lapse during discussion of loss or abuse and were not free from past experiences. Based on the findings of the study, it was found th AAI(Adult Attachment Interview) can be used for evaluation of mother's internal working model in Korean culture.

• The KIPS Transactions:PartD
• /
• v.8D no.3
• /
• pp.247-256
• /
• 2001

Software is developing toward having more large scale and many functions day by day. Also, user’s requirements level for software is being high, especially, requirements for software quality is being high continuously. Methods which can satisfy such User’s requirements is being studied in various viewpoint. First of all, study about quality evaluation system and methodology is energetically in progress in viewpoint to improve quality of software by feed-back software quality evaluation result to developers. In this paper, we define metrics according to a system and developed quality measurement tables according to internal characteristics system of quality characteristics, subcharacteritics, internal characteristics for reliability between quality characteristics of international standard, ISO/IEC 9126 about software quality. And we propose evaluation results about development products using internal characteristics.

• The Korean journal of internal medicine
• /
• v.39 no.1
• /
• pp.86-94
• /
• 2024

Background/Aims: A catheter is inserted through the nasal cavity during high-resolution esophageal manometry (HRM), which may cause adverse events such as pain or epistaxis. Despite these possible safety considerations, studies on this subject are very limited. We aimed to investigate the usefulness of nasal cavity evaluation before HRM to reduce the risk of adverse events and test failure. Methods: Patients who underwent HRM after consultation with the ear-nose-throat department for nasal evaluation were retrospectively enrolled between December 2021 and May 2022. The included patients had a previous history of sinonasal disease or surgery or had subjective nasal discomfort. All patients answered the Sino-Nasal Outcome Test (SNOT-22) questionnaire, and subjective nasal discomfort was scored using a visual analog scale. Nasal endoscopy and acoustic rhinometry were performed for disease evaluation and volumetric assessment. Results: The analysis included 22 patients with a mean age of 58.9 years. The mean SNOT-22 score was 24.2, and 16 patients (72.7%) complained of subjective nasal obstruction. The HRM catheter was successfully inserted in 20 patients (90.9%), without any significant adverse events. The objective measurement outcomes of acoustic rhinometry and sinus endoscopy did not always correspond to subjective symptoms. Narrowed nasal airways unresponsive to decongestants were observed in two patients with failed catheter insertion. Conclusions: To reduce the risk of adverse events and test failure during HRM, a site-specific questionnaire to evaluate nasal obstruction might be helpful. When nasal obstruction is suspected, objective nasal cavity evaluation could be recommended for the safe and successful performance of HRM.

• Proceedings of the Computational Structural Engineering Institute Conference
• /
• 2001.10a
• /
• pp.269-276
• /
• 2001

Tubular structures are widely used for offshore platforms and truss type structures. In this paper, nonlinear finite element analysis is used to assess the static strength of stiffened tubular T-joints subjected to compressive brace loading. This joints was modelled with and without internal ring stiffener According to variation of ring geometries, the effect of ring stiffener for T-joints are investigated. Internal ring stiffener is found to be efficient improving ultimate strength of tubular joints. Relations of ring thickness and axial strength are observed considering geometric parameters of ring stiffeners.