نتایج جستجو برای: scan rate

تعداد نتایج: 1031262  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده مهندسی شیمی و نفت 1391

برای اطمینان از درستی کارکرد فرآیند های صنعتی، نیاز به ابزارهایی هست که وضعیت های نامطلوب عملکرد فرآیند را با دقت و سرعت بالا به راهبر فرآیند نشان دهد. یک روش موثر برای تشخیص و ردیابی عیوب، به کاهش اثر این عیوب، تأمین ایمنی عملیات، کم کردن عدم زمان کارکرد و کاهش هزینه های بازسازی کمک می کند. در حال حاضرbayesian belief networks (bbns) از جمله روش های مورد توجه جهت تعیین و تشخیص عیوب فرآیندها به ...

2014
Glenn S Slavin Maggie Fung

Background Single-phase cardiac MRI acquires data only during a brief period of the cardiac cycle. To avoid motion artifacts, the operator must select a trigger delay that corresponds to a period of minimal cardiac motion, typically at end-systole or mid-diastole. This can be done by inspecting a prior cine scan for quiescent periods. However, because these cardiac phases can vary in temporal p...

پایان نامه :وزارت بهداشت، درمان و آموزش پزشکی - دانشگاه علوم پزشکی و خدمات بهداشتی درمانی شهید بهشتی - دانشکده پزشکی 1380

در این بررسی به روش گذشته نگر پرونده های بیماران در بیمارستان شهدا در ده سال اخیر مورد مطالعه قرار گرفته است. فاکتورهای مورد نظر عبارت بودند از: سن، جنس، شکایات و علائم بدو ورود به بیمارستان ، بیماری همراه یا فاکتور مستعد کننده ، بررسی ct scan بیماران، نوع درمان جراحی انجام شده و نتیجه کشت و اسمیر محتویات آبسه ها و یافته های آزمایشگاهی و آنتی بیوتیک مصرفی و نتیجه درمان. نتیجه این که شیوع نسبتا ...

2015
Gary T. Smith Ahmad R. Rahman Ming Li Brandon Moore Hester Gietema Giulia Veronesi Pierre P. Massion Ronald C. Walker Daniel L Rubin

PURPOSE To use clinically measured reproducibility of volumetric CT (vCT) of lung nodules to estimate error in nodule growth rate in order to determine optimal scan interval for patient follow-up. METHODS We performed quantitative vCT on 89 stable non-calcified nodules and 49 calcified nodules measuring 3-13 mm diameter in 71 patients who underwent 3-9 repeat vCT studies for clinical evaluati...

Journal: :مجله دانشگاه علوم پزشکی کرمانشاه 0
daryoush afshari dept. of neurology, school of medicine, kermanshah university of medical sciences, kermanshah mansour rezaei dept. of biostatistics and epidemiology, school of health, social development of health promotion research center, kermanshah university of medical sciences, kermanshah elham gilvari school of medicine, kermanshah university of medical sciences, kermanshah

background: imaging studies performed in research centers suggest a high prevalence of brain structural abnormalities in patients with epilepsy. however, the results of research studies may not be directly applicable to general clinic, because they may perform on patients with high probability of cerebral abnormalities. on the other hand, more advanced modalities are likely to be used in resear...

Journal: :Pediatrics 2015
Daniel L Lodwick Jennifer N Cooper Kelly J Kelleher Richard Brilli Peter C Minneci Katherine J Deans

BACKGROUND Recent efforts have focused on reducing computed tomography (CT) imaging in children. Although published reports show variability in CT scanning for specific indications, an assessment of the effects of institutional factors (case-mix or hospital volume) on the rate of CT scanning for any indication is necessary to better understand variability across pediatric hospitals. METHODS D...

2010
S. V. Lokesh

Electrochemical investigations of 1,2,4-triazole and benzotriazole in aqueous acidic media has been carried out by cyclic voltammetric measurements. Cyclic voltammetric experiments were carried on glassy carbon (GC) working electrode. Effect of potential scan rate, pH of the solution and use of different surfactant on the electrochemical behavior has been investigated. Single reduction wave was...

Journal: :International journal of audiology 2011
Piers Dawes

OBJECTIVE The SCAN-A ( Keith, 1994 ) is a test for auditory processing disorders in adolescents aged 11+ and adults developed in the USA. It was previously found that the children's version (the SCAN-C) over diagnoses auditory processing disorder in UK children. This study was conducted to assess the use of the SCAN-A with UK adults. DESIGN Comparison of UK adult's SCAN-A performance to US-ba...

2006
Arno Wagner Thomas Dübendorfer Roman Hiestand Christoph Göldi Bernhard Plattner

Finding the cause for congested virtual private network (VPN) links that connect an office network over the Internet to remote subsidiaries can be a hassle. Scan traffic of worm infected hosts is one important possible cause. We developed a scan detection tool, which continuously monitors network traffic on VPN gateway(s) and that reliably detects and reports worm infected hosts by tracking ano...

Introduction: Accurate staging plays an important role in management of patients with prostate cancer especially in high-risk group. Today, [68Ga]Ga-PSMA-11 PET/CT should be considered as the preferred imaging tool for treatment planning and initial staging of the disease. Methods: A total number of 628 patients with prostate cancer referred to...

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