نتایج جستجو برای: false positive
تعداد نتایج: 703874 فیلتر نتایج به سال:
Background and aim: Contact dermatitis is an inflammatory skin response due to contact with environmental materials manifested as acute or chronic eczema. Patch test is the standard test to recognize responsible allergen. The objective of this study was to evaluate the frequency of false positive patch test responses in patients with Exited Skin Syndrome (ESS).Materials...
FDG PET CT scan is considered to be a sensitive tool to detect skeletal metastasis in known malignancies. However, it’s high sensitivity and low specificity may account for false positive diagnosis in cases of trauma, infection, inflammation and other benign conditions. Skeletal hemangioma is one of the common benign conditions which are typically ametabolic on FDG PET CT with no uptake on bone...
با توجه به گسترش روز افزون سیستم های دیدبانی می توان از روش های پردازش تصویر برای آشکارسازی اتوماتیک بسیاری از رخدادها استفاده کرد. یکی از وقایع مهم که شناسایی آن در همه مکان ها مورد توجه است وقایع آتش سوزی است. در این پایان نامه روشی برای آشکارسازی آتش از روی تصاویر ویدئویی به کمک تکنیک های بازشناسی آماری الگو پیشنهاد می شود. در روش ارائه شده از ویژگی های مکانی مانند رنگ، ناهمگونی شکل، نامتقار...
Background and purpose: False positive in newborn hearing screening increases cost and maternal anxiety. We aimed to evaluate the effect of mode of delivery and screening age on false positive result of first screening test. Identifying and controlling these factors could reduce the rate of false positive tests. Materials and methods: In this study, 2784 infants were evaluated by otoacoustic...
Enteric fever is endemic in this part of the world, and Widal test is one of the time-honored laboratory tests that are being used for years to diagnose the disease. On the other hand, melioidosis is a newly emerging disease from this region, which is most often misdiagnosed or underdiagnosed by clinicians. It is well accepted that false-positive Widal reactions following certain non-typhoid Sa...
Nonfilling of the normal internal auditory canal on computed tomographic (CT) gas cisternography was observed in seven (11%) of 62 cases in a retrospective study of three series of gas cisternograms. The meatal surface of the fluid-filled canal was convex and pointed, simulating a small acoustic neuroma. A meniscus effect at the gas-cerebrospinal fluid interface was considered the probable caus...
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