نتایج جستجو برای: ct number homogeneity acrylic

تعداد نتایج: 1317195  

Journal: :Bio-medical materials and engineering 2015
Lung Fa Pan Erdenetsetseg Erdene Chun Chi Chen Lung Kwang Pan

In this study, the phantom imaging quality of 64-slice CT acquisition protocol was quantitatively evaluated using Taguchi. The phantom acrylic line group was designed and assembled with multiple layers of solid water plate in order to imitate the adult abdomen, and scanned with Philips brilliance CT in order to simulate a clinical examination. According to the Taguchi L8(2(7)) orthogonal array,...

2015
G S Chandu Pooja Asnani Siddarth Gupta Mohd. Faisal Khan

BACKGROUND Use of alkaline peroxide denture cleanser with different temperature of water could cause a change in surface hardness of the acrylic denture and also has a bleaching effect. The purpose of the study was to determine the effect of increased water content during thermal cycling of hot water-treated acrylic on the surface hardness of acrylic denture base when compared to warm water tre...

ژورنال: کومش 2020
Abedi, Iraj, Akbari-Zadeh, Hadi, Amouheidari, Alireza, Saadatmand, Pegah, Shanei, Ahmad,

Introduction: The purpose of this study was to evaluate the dosimetric and radiobiological parameters of salivary glands in treatment of patients with oral tongue cancer by 3D conventional radiotherapy (3D-CRT) and intensity modulated radiation therapy (IMRT) techniques. Materials and Methods: This study was performed on treatment planning of patients with oral tongue cancer in T2-3/N0 cancer s...

Journal: :Analytical Sciences 2021

Non-destructive observations of cross-sectional shapes acrylic single fibers using X-ray computed tomography (CT) were performed. A commercial CT apparatus (Rigaku nano3DX) was employed because its micrometer-scale spatial resolution and remarkable image contrast for soft matter. We assessed two types sample support, a paraffin strip nylon string, fiber samples in terms easy handling recovery. ...

Journal: :Investigative ophthalmology & visual science 2006
Carole A Cooke Stuart McGimpsey Gerald Mahon Richard M Best

PURPOSE To demonstrate differences in human lens epithelial cell adhesion to different intraocular lens biomaterials in vitro and to determine whether these differences can be influenced by coating the intraocular lens surface with commercially available fibronectin. METHODS A prospective laboratory-based study comparing human lens epithelial cell adhesion to silicone (n=18), polymethylmethac...

2017
Tibor Major Csaba Polgár

In the last decades, treatment planning for multicatheter interstitial breast brachytherapy has evolved considerably from fluoroscopy-based 2D to anatomy-based 3D planning. To plan the right positions of the catheters, ultrasound or computed tomography (CT) imaging can be used, but the treatment plan is always based on postimplant CT images. With CT imaging, the 3D target volume can be defined ...

Journal: :Investigative radiology 2015
John D Newell Matthew K Fuld Thomas Allmendinger Jered P Sieren Kung-Sik Chan Junfeng Guo Eric A Hoffman

OBJECTIVES The purpose of this study was to evaluate the impact of ultralow radiation dose single-energy computed tomographic (CT) acquisitions with Sn prefiltration and third-generation iterative reconstruction on density-based quantitative measures of growing interest in phenotyping pulmonary disease. MATERIALS AND METHODS The effects of both decreasing dose and different body habitus on th...

Journal: :Journal of materials science. Materials in medicine 2014
James Clements Gavin Walker Sreekanth Pentlavalli Nicholas Dunne

The initial composition of acrylic bone cement along with the mixing and delivery technique used can influence its final properties and therefore its clinical success in vivo. The polymerisation of acrylic bone cement is complex with a number of processes happening simultaneously. Acrylic bone cement mixing and delivery systems have undergone several design changes in their advancement, althoug...

Journal: :Bioimpacts 2023

Introduction: This study aimed to assess the potential of poly (acrylic acid)/tricalcium phosphate nanoparticles (PAA/triCaPNPs) scaffold in terms biocompatibility and osteoconductivity properties in-vivo evaluation as well investigate performance PAA/triCaPNPs (with or without exosomes derived from UC-MSCs) for bone regeneration rat critical-sized defect. Methods: was made acrylic acid (AA) mo...

Journal: :Revista medico-chirurgicala a Societatii de Medici si Naturalisti din Iasi 2013
Eugenia Popescu Violeta Trandafir D Negru N Dobrin Daniela Trandafir

Hemangiomas account for half of the parotid gland tumors occurring in children. After a rapid increase in the first months of life, some of them gradually regress (until complete disappearance) in a period of several years. Hemangiomas that do not regress over time, grow in size (possibly within a short period of time) or develop complications such as intralesional acute bleeding or thrombosis ...

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