• Imaging Science in Dentistry
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• v.44 no.1
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• pp.31-35
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• 2014

Purpose: This study was performed to investigate the effect of image enhancement of periapical radiographs according to the diagnostic task. Materials and Methods: Eighty digital intraoral radiographs were obtained from patients and classified into four groups according to the diagnostic tasks of dental caries, periodontal diseases, periapical lesions, and endodontic files. All images were enhanced differently by using five processing techniques. Three radiologists blindly compared the subjective image quality of the original images and the processed images using a 5-point scale. Results: There were significant differences between the image quality of the processed images and that of the original images (P< 0.01) in all the diagnostic task groups. Processing techniques showed significantly different efficacy according to the diagnostic task (P< 0.01). Conclusion: Image enhancement affects the image quality differently depending on the diagnostic task. And the use of optimal parameters is important for each diagnostic task.

• Journal of Oriental Neuropsychiatry
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• v.23 no.4
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• pp.1-10
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• 2012

Objectives : This study aims to evaluate the current status of clinical use of diagnostic equipment in oriental neuropsychiatry. Methods : Thirty clinical studies using diagnostic equipment out of 223 papers in the journal of oriental neuropsychiatry in the 10 years from 2003 to 2012 were reviewed. Results : Ten diagnostic apparatuses were used in 30 papers. HRV (Heart Rate Variability) was used the most, but the results of papers were not consistent. ADS (ADHD Diagnostic System) and ERP (Event Related Potential) were effective in clinical research. Conclusions : Diagnostic equipment might be useful and effective to treat mental disorders if they are to be used properly and followed by well-designed studies.

• Journal of The Korean Radiological Technologist Association
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• v.28 no.1
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• pp.161-166
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• 2002

Purpose: To make a comparison evaluated of the auditory instrument and visual instrument language generation task in the fMRI, on the adult volunteers. Materials and Methods: Total of 6 normal adult volunteers(men;4, women;2, mean age;24) performed in 1.5

• Journal of The Korean Radiological Technologist Association
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• v.27 no.2
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• pp.86-94
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• 2001

I. Purpose : There are many kinds of MRI techniques and there have been new techniques spreading clinically with the development of software. Clinical diagnosis value has been comparatively studied by conducting the techniques of SE, TSE, and TGSE on the

• Journal of The Korea Institute of Healthcare Architecture
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• v.26 no.4
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• pp.29-38
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• 2020

Purpose: The first thing to be done in promoting community care is local diagnosis. Therefore, this study attempted to derive the physical infrastructure to be diagnosed, and to develop diagnostic items and diagnostic indicators applicable to this. Methods:: First, the physical infrastructure related to the community care is derived. And the diagnosis items are derived using the checklist of 'community support and health services' in the WHO Guide for Global age-friendly cities. Next, by analyzing previous studies, we develop diagnostic indicators for each diagnostic item and explore their applicability. Results: As a result of deriving the physical infrastructure for each area of housing, health service, and nursing care for community care, 22 facilities were derived for 9 types. Diagnosis items for the facilities are 1)regional equity, 2)proximity between facilities, 3)transportation access, 4)regional use, 5)barrier-free design, 6)diversity of facilities, and a total of 14 diagnostic indicators was derived. We reviewed and suggested the applicability of diagnostic items and indicators by each physical infrastructure. Implications: For the realization of community care, local diagnosis should not be limited to sim- ply grasping the presence or absence of facilities and the total amount. Instead it should strengthen capabilities by conducting diagnosis to understand the performance of facilities.

• Asian Pacific Journal of Cancer Prevention
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• v.15 no.14
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• pp.5593-5596
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• 2014

Background: The objective of this study was to determine a diagnostic classification scheme using a decision tree based model. Materials and Methods: The study was conducted as a retrospective case-control study in Imam Khomeini hospital in Tehran during 2001 to 2009. Data, including demographic and clinical-pathological characteristics, were uniformly collected from 624 females, 312 of them were referred with positive diagnosis of breast cancer (cases) and 312 healthy women (controls). The decision tree was implemented to develop a diagnostic classification scheme using CART 6.0 Software. The AUC (area under curve), was measured as the overall performance of diagnostic classification of the decision tree. Results: Five variables as main risk factors of breast cancer and six subgroups as high risk were identified. The results indicated that increasing age, low age at menarche, single and divorced statues, irregular menarche pattern and family history of breast cancer are the important diagnostic factors in Iranian breast cancer patients. The sensitivity and specificity of the analysis were 66% and 86.9% respectively. The high AUC (0.82) also showed an excellent classification and diagnostic performance of the model. Conclusions: Decision tree based model appears to be suitable for identifying risk factors and high or low risk subgroups. It can also assists clinicians in making a decision, since it can identify underlying prognostic relationships and understanding the model is very explicit.

• Korean Journal of Veterinary Research
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• v.49 no.2
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• pp.121-125
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• 2009

Paratuberculosis caused by Mycobacterium avium subspecies paratuberculosis (Mpt) is a chronic infectious enteric disease with deleterious impact on the performance in ruminants. In Korea, ELISA has been introduced to detect antibodies to Mpt in individual cattle. However, comparison study with ELISA has not been studied until now. In total, a panel of 899 serum samples obtained from dairy cattle was analyzed with two commercial ELISAs for Mpt to assess the performance. Two ELISAs employed in this study were both licensed worldwide. Two ELISAs applied onto same serum samples showed the moderate agreement (kappa value = 0.60). There was non-significant McNemar test (p = 0.0614) between two ELISA results indicating that each proportion detected by two kits did not differ. In addition, the percent agreement between two ELISA results was turned out to be 96.8% which interpreted excellent reproducibility. It was shown from this study that two ELISAs revealed moderate kappa agreement performance. The implication raised is that when ELISAs as diagnostics are used to detect Mpt in individual cattle, positive reaction by either ELISA should be interpreted as serologically Mpt positive due to presumed low sensitivity of ELISAs and their test agreement being less than 100%.

• Journal of the Korean Society of Radiology
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• v.15 no.2
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• pp.159-164
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• 2021

The examination using diagnostic x-ray equipment is one of the most useful diagnostic equipment for identifying information in the human body in diagnostic radiology. For this reason, the number of examinations has recently increased a lot. Increasing the number of examinations will accelerate the aging of the device. In addition, this makes them aware of the importance of quality control for the diagnostic x-ray device. Particularly, in a diagnostic x-ray device, quality control refers to an act of always maintaining a certain level of image quality by identifying and correcting all problems that may lead to reduction of the diagnosis area in advance. Therefore, this study summarizes and reports general information about quality control in examinations using diagnostic x-ray equipment.

• Journal of The Korea Institute of Healthcare Architecture
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• v.12 no.1
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• pp.61-69
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• 2006

The Diagnostic Imagining Department essentially needs to be transformed by the plan of the room and the medical equipment which should be improved according to a rapid development in technology. And the room should be considered the scale and composition an the time of planning. Because this part is often influenced in a specific character of imaging equipment in the room. The researches on the scale and composition of Diagnostic Imaging Department were the main part in 1980's but after 1990's this kind of researches have not been enough. So this study has an intention of proposing basic data which is used in planning the Diagnostic Imaging Department by analyzing the actual condition of the area organization in general hospital.

• Journal of Sasang Constitutional Medicine
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• v.12 no.2
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• pp.34-42
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• 2000

Background and Purpose ; Sasang Constitutional medicine is dividing individual's constitutions into four categories. Determination of an individual's constitution however, can be different according to what diagnostic standards apply. In this study, We investigated how different the applying results of the three diagnostic standards-the yong-mo(容貌), the body type(體形), and the mind(心性)-are and what the inter-diagnostic standard agreement is. Methods ; 36 patients in cerebral-infarction, admitted into the Dong-Eui Korean hospital from 1. May. 2000 to 12. October. 2000, were diagnosed by three diagnostic standards - the yong-mo(容貌), the body type(體形), and the mind(心性). Each patient was treated by Sasang constitutional medicine. The agreement of the final constitutional diagnosis and the result of each diagnostic standard was analyzed. Results 1. The number of Taeeumin was 13(40.6%), Soyangin was 10(31.3%), Soeumin was 9(28.1%). 2. In terms of analysis on the agreement of the final constitutional diagnosis and the result of each diagnostic standard, the yong-mo(容貌) showed the highest agreement of 93.8%, followed by 68.8% of the mind(心性), and the body type(體形) showed the lowest agreement of 53.1%. 3. The yong-mo(容貌) standard showed high diagnostic rate of the three constitutions(Soyangin, Taeeumin, Soeumin) generally and diagnostic rate of Soeumin was especially high. The body type(體形) standard showed low diagnostic rate of Taeeumin, and high diagnostic rate of Soeumin. The mind(心性) standard showed low diagnostic rate of Soeumin. 4. In terms of analysis on the agreement of inter-diagnostic standard result, the yong-mo(容貌) and the mind(心性) show the highest agreement, the mind(心性) and the body type(體形) showed the lowest agreement. 5. If the results come out that the three diagnostic standards have no concentration on one constitution, it was effective to choose the result of the yong-mo(容貌) standard. If it is the case the result of inter-diagnostic standard agreed more than two, it was better to follow the two agreed result than to follow the result of one specific characteristic standard.