نتایج جستجو برای: ct self
تعداد نتایج: 658642 فیلتر نتایج به سال:
Open-configuration portable x-ray computed tomography (CT) is a technology that enables the volumetric inspections of regions interest on large parts. The open-configuration aspect CT allows it to be and applicable irregular parts are not conducive conventional booth setups or ring geometry. inherent problem with setup lack mechanical controls determine geometry between source, detector, part. ...
This paper presents work toward the studying of a new family of self-healing cementitious material. This innovative system features the design of microcapsules with calcium sulfoaluminate cement (CSA) as healing agent. The aim of this study is to comprehensively monitor the whole crack-healing process of microcapsules based self-healing system by means of X-ray computed tomography (X-ray CT). I...
introduction computed tomography scans are a very important tool for diagnosis and assessment of response to treatment in the practice of medicine. ionizing radiation in medical imaging is undoubtedly one of the most powerful diagnostic tools in medicine. yet, as with all medical interventions, there are potential risks in addition to the clear potential benefits. materials and methods two refe...
introduction: the advent of dual-modality pet/ct scanners has revolutionized clinical oncology by improving lesion localization and facilitating treatment planning for radiotherapy. in addition, the use of ct images for ct-based attenuation correction (ctac) decreases the overall scanning time and creates a noise-free attenuation map (6map). ctac methods include scaling, s...
Dynamic computed tomography perfusion (CTP) imaging is a promising approach for acute ischemic stroke diagnosis and evaluation. Hemodynamic parametric maps of cerebral parenchyma are calculated from repeated CT scans the first pass iodinated contrast through brain. It necessary to reduce dose CTP routine applications due high radiation exposure scans, where image denoising achieve reliable diag...
in recent years, there has been a growing interest among researchers to investigate the relationship betweenteacher self-efficacy and classroom behavior management, especially students misbehavior. therefore, this study aimed to comparatively investigate english and arabic teachers’ use of different behavior managementstrategies, their self-efficacy, and their success in an iranian context. th...
OBJECTIVE To examine the diagnostic performance of self obtained low vaginal swabs (SOLVS) and polymerase chain reaction (PCR) techniques in the diagnosis of Chlamydia trachomatis (CT), Neisseria gonorrhoeae (NG), and Trichomonas vaginalis (TV) infection in a variety of clinical practice settings in remote north western Australia. DESIGN A cross sectional field study of microbiological collec...
While goal orientation and related factors like learner selfefficacy are of great interest to learning science researchers, some voice concerns regarding the measurement of such factors using self-report questionnaires. To address these concerns, recent work has explored the use of behavioral indicators like hint-seeking and glossary use in intelligent tutoring systems like Carnegie Learning’s ...
BACKGROUND The Centers for Disease Control recommend screening for asymptomatic sexually transmitted infection (STI) among HIV-infected men when there is self-report of unprotected anal-receptive exposure. The study goals were: (1) to estimate the validity and usefulness for screening policies of self-reported unprotected anal-receptive exposure as a risk indicator for asymptomatic anorectal in...
BACKGROUND A single-nucleotide polymorphism (SNP; rs12979860) near the IL28B gene has been associated with spontaneous and treatment-induced hepatitis C virus clearance. We investigated predictors of spontaneous disease resolution in a cohort of patients with acute hepatitis C (AHC), analyzing epidemiological, clinical and virological parameters together with IL28B.rs12979860 genotypes and cel...
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