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Skin lesion classification system using a Knearest neighbor algorithm

Visual Computing for Industry,Biomedicine,and Art 2022年第1期5卷 78-87页

作者： mustafa qays hatem Renewable Energy Department Technical Institute of BaqubahMiddle Technical UniversityDyala 32001Iraq

One of the most critical steps in medical health is the proper diagnosis of the *** is one of the most volatile and challenging fields in terms of *** often require further testing,review of the patient’s history,and other data to ensure a proper ***,finding a method that can guarantee a proper trusted diagnosis quickly is *** approaches have been developed over the years to facilitate the diagnosis based on machine ***,the developed systems lack certain properties,such as high *** study proposes a system developed in MATLAB that can identify skin lesions and classify them as normal or *** classification process is effectuated by implementing the K-nearest neighbor(KNN)approach to differentiate between normal skin and malignant skin lesions that imply *** is used because it is time efficient and promises highly accurate *** accuracy of the system reached 98%in classifying skin lesions.

关键词： Machine learning Skin disease K-nearest neighbor Skin detection MATLAB Graphical user interface

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Epidemiological Aspects of Intrafamilial Spread of HCV Infection in Egyptian Population: A Pilot Study

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Open Journal of Gastroenterology 2014年第5期4卷 228-236页

作者： Mahmoud El-Bendary Gamal Esmat mustafa Neamatallah Emily Kamel Tarek Besheer hatem Elalfy Maged El-Setouhy Dalia Omran Department of Community Environmental and Occupational Medicine Ain-Shams Faculty of Medicine Ain-Shams University Cairo Egypt Medical Biochemistry Department Mansoura Faculty of Medicine Mansoura University Mansoura Egypt Public Health & Preventive Medicine Department Mansoura Faculty of Medicine Mansoura University Mansoura Egypt Tropical Medicine & Hepatology Department Cairo Faculty of Medicine Cairo University Giza Egypt Tropical Medicine & Hepatology Department Mansoura Faculty of Medicine Mansoura University Mansoura Egypt

Aim: Liver disease is a leading cause of morbidity and mortality among Egyptians. The major cause is infection with HCV, with 70 000 up to 140 000 newly reported cases annually. The objectives of this study were to determine the prevalence of anti-HCV antibodies among household contacts of HCV index cases and to identify the possible risk factors of transmission of HCV among Egyptian families. Material and Methods: The present external pilot study (double centre study) was performed on a convenient sample of 125 index cases and their 321 household family contacts recruited from Mansoura & Cairo University where 2 questionnaires were used to collect data from the index & their related contacts. The all were exposed to clinical examinations, routine laboratory testing & screening for the prevalence of Anti-HCV antibodies. Results: The prevalence of anti-HCV seropositivity among household contacts of index cases was found to be 13.7% which husbands of female index cases ranked first followed by wives of male index cases (36.36% versus 17.86% respectively,

关键词： HCV Intrafamilial Transmission Epidemiology

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Effect of transcatheter aortic valve implantation on QT dispersion in patients with aortic stenosis

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Journal of Geriatric Cardiology 2014年第4期11卷 286-290页

作者： Hakan Erkan Engin hatem mustafa Tank Agac Levent Korkmaz Teyyar Gokdeniz Ahmet Cagrl Aykan Ezgi Kalaycloglu Faruk Boyacl Omer Faruk Clrakoglu Sukru Celik Department of Cardiology Ahi Evren Cardiovascular and Thoracic Surgery Training and Research Hospital Camhk Street Trabzon 61040 Turkey Department of Cardiology Kafkas University Hospital Kars Turkey

Background QT dispersion （QTd） is a predictor of ventricular arrhythmia. Ventricular arrhythmia is an important factor influencing morbidity and mortality in patients with aortic stenosis. Surgical aortic valve replacement reduced the QTd in this patients group. However, the effect of transcatheter aortic valve implantation （TAVI） on QTd in patients with aortic stenosis is unknown. The aim of this study was to investigate the effect of TAVI on QTd in patients with aortic stenosis. Methods Patients with severe aortic stenosis, who were not candi-dates for surgical aortic valve replacement due to contraindications or high surgical risk, were included in the study. All patients underwent electrocardiographic and echocardiographic evaluation before, and at the 6th month after TAVI, computed QTd and left ventricular mass index （LVMI）. Results A total 30 patients were admitted to the study （mean age 83.2 ± 1.0 years, female 21 and male 9, mean valve area 0.7 ± 3 mm2）. Edwards SAPIEN heart valves, 23 mm （21 patients） and 26 mm （9 patients）, by the transfemoral approach were used in the TAVI procedures. All TAVI procedures were successful. Both QTd and LVMI at the 6th month after TAVI were significantly reduced com-pared with baseline values of QTd and LVMI before TAVI （73.8 ± 4 ms vs. 68 ± 2 ms, P=0.001 and 198 ± 51 g/m2 vs. 184 ± 40 g/m2, P=0.04, respectively）. There was a significant correlation between QTd and LVMI （r=0.646, P〈0.001）. Conclusions QTd, which malign ventricular arrhythmia marker, and LVMI were significantly reduced after TAVI procedure. TAVI may decrease the possibility of ventricu-lar arrhythmia in patients with aortic stenosis.

关键词： Aortic stenosis QT dispersion Transcatheter aortic valve implantation

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