• 제목/요약/키워드: Diagnostic Pattern

검색결과 674건 처리시간 0.028초

Support Vector Machine Based Diagnostic System for Thyroid Cancer using Statistical Texture Features

  • Gopinath, B.;Shanthi, N.
    • Asian Pacific Journal of Cancer Prevention
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    • 제14권1호
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    • pp.97-102
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    • 2013
  • Objective: The aim of this study was to develop an automated computer-aided diagnostic system for diagnosis of thyroid cancer pattern in fine needle aspiration cytology (FNAC) microscopic images with high degree of sensitivity and specificity using statistical texture features and a Support Vector Machine classifier (SVM). Materials and Methods: A training set of 40 benign and 40 malignant FNAC images and a testing set of 10 benign and 20 malignant FNAC images were used to perform the diagnosis of thyroid cancer. Initially, segmentation of region of interest (ROI) was performed by region-based morphology segmentation. The developed diagnostic system utilized statistical texture features derived from the segmented images using a Gabor filter bank at various wavelengths and angles. Finally, the SVM was used as a machine learning algorithm to identify benign and malignant states of thyroid nodules. Results: The SVMachieved a diagnostic accuracy of 96.7% with sensitivity and specificity of 95% and 100%, respectively, at a wavelength of 4 and an angle of 45. Conclusion: The results show that the diagnosis of thyroid cancer in FNAC images can be effectively performed using statistical texture information derived with Gabor filters in association with an SVM.

반려견 인지기능장애증후군에 대한 한의 진단 및 한약치료 적용 가능성 고찰: 치매환자 국내한의치료기술과 비교 분석 (Potential application of herbal medicine treatment based on pattern identification for canine cognitive dysfunctional syndrome: a comparative analysis of Korea medicine therapy for patients with dementia)

  • 정경숙;조혜연;최유진;장정희
    • 대한수의학회지
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    • 제62권3호
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    • pp.25.1-25.9
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    • 2022
  • Canine cognitive dysfunction syndrome (CDS) is a neurodegenerative disease that causes cognitive and behavioral disorders and reduces the quality of life in dogs and their guardians. This study reviewed the complementary and alternative medicine (CAM) for CDS and compared the diagnosis and therapy of CAM between CDS in canines and dementia in humans. The evaluation tools for the diagnosis of CDS and dementia were similar in the neurological and neuropsychiatric examinations, daily life activity, cognitive tests, and neuroimaging, but the evaluation for dementia was further subdivided. In CAM, pattern identification is a diagnostic method for accurate, personalized treatment, such as herbal medicine. For herbal medicine treatment of cognitive impairment in canines and humans, a similar pattern identification classified as deficiency (Qi, blood, and Yin) and Excess (phlegm, Qi stagnation, and blood stasis) is being used. However, the veterinary clinical basis for verifying the efficacy and safety of CAM therapies for CDS is limited. Therefore, based on CAM evidence in dementia, it is necessary to establish CDS-targeted CAM diagnostic methods and therapeutic techniques considering the anatomical, physiological, and pathological characteristics of dogs.

철근콘크리트 구조물의 균열원인 진단을 위한 전문가 시스템 개발 (Development of Experty System for Diagnosing the Causes of Cracks In Reinforced Concrete)

  • 오병환;신경준;형상수
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 1999년도 학회창립 10주년 기념 1999년도 가을 학술발표회 논문집
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    • pp.495-498
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    • 1999
  • This paper examines a diagnostic model based on the concept of rule and fuzzy pattern recognition. One example is presented to demonstrate the feasibility of the model in diagnosing crack formations in reinforced concrete structures and the result by the expert system is generally satisfactory

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Comprehensive review of membranoproliferative glomerulonephritis: spotlighting the latest advances in revised classification and treatment

  • Jeong Yeon Kim
    • Childhood Kidney Diseases
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    • 제27권2호
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    • pp.64-69
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    • 2023
  • Membranoproliferative glomerulonephritis (MPGN) is a complex group of renal diseases characterized by a specific pattern of glomerular injury that includes thickening of the capillary wall and mesangial expansion, leading to a heterogeneous group of conditions. This review article offers a comprehensive overview of MPGN, its new classification, pathophysiology, diagnostic evaluation, and management options.

Encephalopathy caused by maternal deficiency of vitamin A in a calf

  • Lee, Kyunghyun;Kim, Jongho;Jeon, Ujin;Kim, Yeon Hee;Kim, Ha-Young;So, ByungJae;Choi, Eun-Jin
    • 한국동물위생학회지
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    • 제42권4호
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    • pp.275-278
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    • 2019
  • Blindness was observed in five calves born from cattle fed only a commercial feed of growing stage and dried rice straws for about two years in a farm in Gyeongsangbuk-do province. Three of them died within a month after birth, and a body and sera of his mother and other 19 cattle were submitted for diagnosis. At necropsy, the calf was very weak and filled with cerebrospinal fluid in the cerebrum. Any histopathological lesion including atrophy of death of optic nerve cells was not observed, but the irregular proliferation such as lace pattern of choroidal cells and lymphocytic infiltration just below choroid was observed. No pathogen was detected as a result of the etiological tests on the internal organs of calves and bloods. In addition, the levels of serum vitamin A in different affected and his mother cattle were all lower than normal. Finally, we determined this case as an encephalopathy caused by maternal vitamin A deficiency in a calf. This report is an extreme example of how important it is to supply adequate s diets and a good quality of hay for each stage of growth in cattle.

Marine gas turbine monitoring and diagnostics by simulation and pattern recognition

  • Campora, Ugo;Cravero, Carlo;Zaccone, Raphael
    • International Journal of Naval Architecture and Ocean Engineering
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    • 제10권5호
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    • pp.617-628
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    • 2018
  • Several techniques have been developed in the last years for energy conversion and aeronautic propulsion plants monitoring and diagnostics, to ensure non-stop availability and safety, mainly based on machine learning and pattern recognition methods, which need large databases of measures. This paper aims to describe a simulation based monitoring and diagnostic method to overcome the lack of data. An application on a gas turbine powered frigate is shown. A MATLAB-SIMULINK(R) model of the frigate propulsion system has been used to generate a database of different faulty conditions of the plant. A monitoring and diagnostic system, based on Mahalanobis distance and artificial neural networks have been developed. Experimental data measured during the sea trials have been used for model calibration and validation. Test runs of the procedure have been carried out in a number of simulated degradation cases: in all the considered cases, malfunctions have been successfully detected by the developed model.

표리한열의 설 특성에 관한 정량적 연구 (Quantitative Study on Tongue Images according to Exterior, Interior, Cold and Heat Patterns)

  • 어윤혜;김제균;유화승;김종열;박경모
    • 대한한의학회지
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    • 제27권2호
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    • pp.134-144
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    • 2006
  • Tongue diagnosis is an important diagnostic method in traditional Oriental medicine. It has been especially accepted that quantitative analysis of tongue images allows the accurate diagnosis of the exterior-interior and cold-heat patterns of a patient. However, to ensure stable and reliable results, the color reproduction of such images must first be error-tree. Moreover, tongue diagnosis is much influenced by the surrounding illumination and subjective color recognition, so it has to be performed objectively and quantitatively using a digital diagnostic machine. In this study, 457 tongue images of outpatients were collected using the Digital Tongue Inspection System. Through statistical analysis, the result shows that the heat and cold patterns can be distinguished clearly based on the hue value of the tongue images. The average hue value (1.00) of the tongue's image in the cold pattern is higher than that in the heat pattern (0.99).

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『상한론(傷寒論)』 변병진단체계(辨病診斷體系)에 근거하여 치료한 음양이차후노복병(隂陽易差後勞復病) 증례 4례 (4 Case Reports of Eumyangyeokchahunobok-byung treated by Herbal medicine based on Shanghanlun provisions)

  • 조성환;이성준
    • 대한상한금궤의학회지
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    • 제8권1호
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    • pp.121-143
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    • 2016
  • Objective : This study is to report 4 Eumyangyeokchahunobok-byung cases diagnosed and treated according to newly hypothesized Eumyangyeokchahunobok-byung definition based on Shanghanlun disease pattern identification diagnostic system. Methods : We analyzed 4 clinical cases diagnosed with Eumyangyeokchahunobok-byung and treated by herbal medicine, which included in Eumyangyeokchahunobok-byung chapter of Shanghanlun according to newly hypothesized definition. Results : Dermatology Life Quality Index decreased from 25 to 10 on first patient, dizziness handicap inventory decreased from 64 to 2 on second patient, dizziness handicap inventory also decreased from 56 to 2 on third patient, and fatigue severity scale decreased from 7 to 2 on fourth patient. Conclusions : Not only all the patients' chief complaints relieved but their other clinical problems such as allergic rhinitis, body pain, constipation, reflux esophagitis also improved. These results highly insist that there is quite a possibility that Eumyangyeokchahunobokbyung means various diseases caused by reversed sleep cycle.

『상한론(傷寒論)』 변병(辨病) 진단체계(診斷體系)에 근거하여 마황탕(麻黃湯) 투여 후 호전된 부종 증례 1례 (A Case Report of Edema Treated by Mahwang-tang based on Shanghanlun Provisions)

  • 서영호;왕인호;황보민;최해윤
    • 대한상한금궤의학회지
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    • 제11권1호
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    • pp.103-111
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    • 2019
  • Objective : The purpose of this study was to report the improvement in a patient with edema treated by herb medication based on Shanghanlun provisions. Methods : According to 'A disease pattern identification diagnostic system based on Shanghanlun provisions (DPIDS)', a patient was diagnosed with Taeyang-byung, no. 46 provision and was administered with Mahwang-tang herbal medication for 30 days. The Numeric rating scale (NRS) was used to estimate the response. Results : The NRS score changed from 10 to 1 and the edema disappeared by 46th provision of Mahwang-tang selected according to Shanghanlun provisions. Conclusions : This case report suggests that the two words in the 46th provision of Shanghanlun, '陽氣重, 無汗' (Yang qi heavy, Absence of sweating) indicate a close relationship between photosensitivity and absence of sweating, thereby affecting edema in this case.

『상한론(傷寒論)』 변병진단체계(辨病診斷體系)에 근거하여 오수유탕(吳茱萸湯)을 투여한 편두통 증례 및 하지불안증후군 증례 각 1례 (A Case Report of migraine and a case report of restless legs syndrome treated with Osuyu-tang based on Shanghanlun Provisions)

  • 허주;이욱제;정재원
    • 대한상한금궤의학회지
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    • 제11권1호
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    • pp.125-138
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    • 2019
  • Objective : This study was intended to evaluate if treatment with Osuyu-Tang following the disease pattern identification diagnostic system based on Shanghanlun provisions (DPIDS) worked analyzing the progress of patients with migraine and restless legs syndrome and to reinterpret the provision of 309 Soyinbing Osuyu-Tang based on the analysis of whether it worked. Methods : Two cases treated with Soyinbing Osuyu-Tang were analyzed using DPIDS. The migraine and restless legs syndrome in both cases were evaluated using the migraine disability assessment (MIDAS) and the Korean versions of the international restless legs scale (K-IRLS), respectively. Results : In the first case, during 45 days of treatment, the MIDAS decreased from 10 days to 3 days. In the second case, during 30 days of treatment, the K-IRLS decreased from 30 to 9. In both cases, Soyinbing was associated with the disease, although the activity was less; and Leng (冷) was associated with numbness in the kneeling position. Conclusions : It was confirmed that treatment with Osuyu-Tang was effective against migraine and restless legs syndrome and that Leng could be associated with numbness in the kneeling position. The etymological analysis of the Shanghanlun characters suggested the possibility of further clarifying the clinical significance and interpretation of Shanghanlun.