نتایج جستجو برای: gray value
تعداد نتایج: 770517 فیلتر نتایج به سال:
BACKGROUND AND PURPOSE Iron deposition and white matter (WM) maturation are very important for brain development in infants. It has been reported that the R2* and phase values originating from the gradient-echo sequence could both reflect the iron and myelination. The aim of this study was to investigate age-related changes of R2* and phase value, and compare their performances for monitoring i...
Purpose: To investigate inherent information provided by 18F-FDG PET to ameliorate shortcomings of relying on visual inspection or sole SUV measurement in treatment assessing. Patients and methods: Twelve patients with newly diagnosed NSCLC and treated with combined Chemoradiotherapy (CRT) were involved in this study. We analyzed the percentage variation of gray value in every gray level or on ...
An idealized model on re-constructing digital image between coarse and fine pixel image is proposed. The maximum local cross-correction coefficient method is employed to identify the associated point of an digital image with respect to another digital image. The distance between two corresponding points is considered as the displacement between points. After comparing this distance to the exact...
The choice of gray gas absorption coefficient in the Rank Correlated Spectral Line Weighted-sum-of-gray-gases (RC-SLW) model is investigated. Several options are considered for calculating cross-section from bounding supplemental cross-sections, including that determined by inversion F-variable using Gauss Quadratures, Geometric Mean values, Arithmetic Mean, and finally, a value weighting cross...
از آنجایی که تنشهای خشکی تولید محصول و مواد مؤثره در گیاهان را تحت تأثیر قرار می دهد، در تحقیق حاضر به بررسی اثر تیمارهای مختلف آبیاری بر برخی عاملهای رشد از جمله ارتفاع، قطر یقه، گستردگی تاج پوشش، وزن تر و خشک پایه های ارقام مختلف گیاه وایول (parthenium argentatum gray.) پرداخته شده است. این طرح با استفاده از طرح آماری اسپلیت پلات در چهار سطح آبیاری کامل (در حد ظرفیت زراعی)، تنشهای ملایم (4/3 ...
botrytis cinerea is an important pathogen that causes diseases in ornamental crops. in presentresearch several greenhouses of roses located in central region of iran were surveyed toidentify the botrytis cinerea. a total of 80 isolates were collected from rose greenhouses incentral region of iran. morphological identification was based on characters such asconidiophore and conidial length. acco...
objective: to evaluate the adnexal masses with conventional gray scale and color doppler flow imaging and to assess their diagnostic reliability to differentiate benign and malignant adnexal masses. materials and methods: we evaluated 30 patients with adnexal mass. morphological characterization of the mass was done using sassone score. color doppler parameters noted down in each patient and ca...
Background: Regional differences in gray matter volume (GMV) have been reported to be a reliable marker for diagnosing Parkinson’s disease (PD). This study aimed explore the clinical value of GMV assess magnetic resonance imaging-guided focused ultrasound (MRgFUS) thalamotomy as treatment tremor-dominant PD (TDPD).
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