نتایج جستجو برای: ct kernel

تعداد نتایج: 184643  

Journal: :asia oceania journal of nuclear medicine and biology 0
shigeru kosuda department of radiology, national defense medical college tsuneo saga molecular imaging center, national institute of radiological sciences diana paez nuclear medicine and diagnostic imaging, division of human health, department of nuclear sciences and applications, iaea

the c7-ras 6/061-004 training course by the international atomic energy agency/regional cooperative agreement (iaea/rca) was held in chiba in 2014. the syllabus, pre- and post-course evaluations, and survey questionnaire results were assembled in this course. the post-course evaluation, including 32 questions similar to the pre-course evaluation, was performed right after the end of the final e...

2017
Tobias Geimer Adriana Birlutiu Mathias Unberath Oliver Taubmann Christoph Bert Andreas K. Maier

This paper discusses a kernel ridge regression (KRR) model for motion estimation in radiotherapy. Using KRR, dense internal motion fields are estimated from high-dimensional surrogates without the need for prior dimensionality reduction. We compare the proposed model to a related approach with dimensionality reduction in the form of principal component analysis and principle component regressio...

Journal: :تحقیقات مهندسی کشاورزی 0
محمدعلی رستمی عضو هیئت علمی بخش تحقیقات فنی مهندسی مرکز تحقیقات کشاورزی و منابع طبیعی کرمان

peanuts, an oilseed crop, contain about 46% oil. the peanut shell can be used as fuel or pallets and its dry matter as feedstuff. the whole pods consist of 1-6 kernels. shelling is done at harvest time when the pod moisture content is 5-10%. in this research, a peanut sheller was designed and developed to separate the shell from the pod. the sheller included a hopper, sheller cylinder, concave,...

Objective(s): To investigate and compare quantitative accuracy of kidney absorbed dose measures made from both 2D and 3D imaging in patients receiving 177LuDOTATATE (Lutate) for treatment of neuroendocrine tumours (NETs). Methods: Patients receiving Lutate therapy underwent both whole body planar imaging and SPECT/CT imaging over the kidneys at time points 0.5, 4, 24, and 96-120 hours after inj...

Journal: :IEICE Transactions 2008
Rui Xu Yen-Wei Chen Songyuan Tang Shigehiro Morikawa Yoshimasa Kurumi

Image Registration can be seen as an optimization problem to find a cost function and then use an optimization method to get its minimum. Normalized mutual information is a widely-used robust method to design a cost function in medical image registration. Its calculation is based on the joint histogram of the fixed and transformed moving images. Usually, only a discrete joint histogram is consi...

2015
Pietro Nardelli Kashif A Khan Alberto Corvò Niamh Moore Mary J Murphy Maria Twomey Owen J O’Connor Marcus P Kennedy Raúl San José Estépar Michael M Maher Pádraig Cantillon-Murphy

BACKGROUND Computed tomography (CT) helps physicians locate and diagnose pathological conditions. In some conditions, having an airway segmentation method which facilitates reconstruction of the airway from chest CT images can help hugely in the assessment of lung diseases. Many efforts have been made to develop airway segmentation algorithms, but methods are usually not optimized to be reliabl...

حسنی, فرزانه, سید شریفی, رئوف, صدقی, محمد,

Application of zinc can improve the tolerance and resistance of plants especially sunflower to environmental stresses and be effective on kernel set and yield. To investigate the effects of zinc oxide nanoparticles on the length, effective period, the rate of kernel filling and kernel weight in sunflower cultivars, a factorial experiment based on randomized complete block design with three repl...

Journal: :مجله دانشگاه علوم پزشکی شهید صدوقی یزد 0
پیمان دبیرمقدم p dabirmoghadam شبنم آذری sh azari فاطمه عزالدینی اردکانی f ezoddini-ardakani عبدالرضا صدر ارحامی ar sadr-arhami حمیدرضا منصوریان hr mansourian

introduction: mandibular fracture is the most common facial bone fracture due to facial trauma. a variety of imagings have been used for diagnosis of mandibular fractures. however, the choice of imaging for diagnosis of mandibular fractures is controversial.present study compares the accuracy of the three most common imaging methods in mandibular fracture diagnosis panoramic radiography, corona...

Journal: :Malaysian applied biology 2021

Reconstruction kernel is one of the parameters that affects computed tomography (CT) image quality. This study aimed to evaluate effects applying three different reconstruction kernels on quality in 3-phased CT liver. A total 63 liver images including normal (n = 43) and lesion 20) were retrospectively reviewed. Smooth (B20f), medium smooth (B30f) (B40f) employed process. Mean attenuation, nois...

Water deficit is one of the most important abiotic factors limiting growth, which adversely affect growth and crop production. In order to study the relationship between kernel size and phenological characteristics on grain yield, 46 local bread wheat genotypes along with four varieties were evaluated in randomized complete block design with three replications under irrigation and water deficit...

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