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Design Improvement of the Rotary Blood Pump by Computational Fluid Dynamics Analysis
artificial heart ventricular assist device axial flow blood pump computational fluid dynamics
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2009/6/9
In this study, the pump performance derived from CFD analysis coincided well with the experimental results. From the results of the CFD analysis, the existence of reverse flows was found in the inflow...
Simulation of Soft Tissue Ablation for a VR Simulator
ablation FEM-based soft tissue model maximum shearing stress hypothesis
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2009/6/9
In surgery, failure of ablation is fatal to patients, and the operation is difficult for residents to learn. Our study aims to provide a VR-based training environment for ablation. This paper presents...
Aging Effect of Web-safe Color Visibility on a White Background
aging effect visibility comparison white background paired comparison test contrast
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2009/6/9
Elderly people have more opportunities to use information technology terminals because of the increasing dissemination of the Internet. Since visual functions are weakened with senescence, website vis...
Analysis of QT Prolongation Using Cardiac Action Potential Simulation
QT interval prolongation remodeling IKs current KCNE1 Luo-Rudy model
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2009/6/9
In heart failure, QT interval and action potential duration (APD) is prolonged and IKs, a slow component of delayed rectifier potassium current, decreases. We have reported that the KCNE1 gene, coding...
Artificial Organ Made in vivo —Valve Leaflet of the Jellyfish Valve—
insert molding technique in vivo tissue jellyfish valve
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2009/6/8
Artificial materials used for artificial organs have sufficient strength and durability. However, their biocompatibility has not been improved yet to the level of tissue-derived biomaterials. On the o...
Elasticity Imaging of Soft Tissue
elasticity imaging contact impedance method palpation equivalent mass
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2009/6/8
Elasticity imaging of soft tissue with contact impedance method was performed to quantify medical palpation. Frequency changes of piezoelectric vibrator in contact with soft tissue depends on the elas...
Learning Processes and Pupillary Responses in Inverted Tracking Tasks
inverted tracking task pupil dilation sensorimotor transformation cognitive load automatization
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2009/6/5
This finding suggests increasing automatization of the to-be-learned sensorimotor transformation. Pupil measures were not correlated with tracking error on individual trials, suggesting that the inver...
Automated Classification of Cerebral Arteries in MRA Images
Magnetic resonance angiography Maximum intensity projection (MIP) Cerebral arteries Image registration Computer-aided diagnosis
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2009/6/5
The detection of unruptured aneurysms is a major task in magnetic resonance angiography (MRA). However, it is difficult for radiologists and/or neurosurgeons to detect small aneurysms on maximum inten...
Immunohistochemical detection of ENaCβ in the terminal Schwann cells associated with the periodontal Ruffini endings of the rat incisor
ENaCβ terminal Schwann cells periodontal Ruffini endings rat incisor
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2009/5/8
Epithelial sodium channels (ENaCs) are a subfamily of ion channels within the degenerin/ENaC (DEG/ENaC) superfamily. Previous studies have shown the immunolocalization of ENaC in the neural elements...
Proposal of alternative mechanism responsible for the function of high-speed swimsuits
alternative mechanism high-speed swimsuits
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2009/5/8
Since many top swimmers wearing Speedo LZR Racer swimsuits have broken world records, it is considered that the corset-like grip of suit supports the swimmers to maintain flexibility of movement and...
Taguchi Loss Function for Varus/Valgus Alignment in Total Knee Arthroplasty
Total knee arthroplasty Taguchi loss function varus alignment valgus alignment
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2010/1/22
Methods of designing equipment to improve quality have been developed by Taguchi. A key feature of these methods is the development of loss function, which quantifies the financial cost (loss) resulti...
Facile Synthesis of High-Magnetization γ-Fe2O3/Alginate/Silica Microspheres for Isolation of Plasma DNA
Alginate Magnetic microspheres Nucleic acid isolation Silica
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2010/7/16
A novel process combining emulsification with sol–gel method is described to synthesize -
Fe2O3/alginate/silica microspheres. The synthesis procedure consists of two steps: (1) synthesis of magnetic...
Bone formation in β-tricalcium phosphate-filled bone defects of the rat femur：Morphometric analysis and expression of bone related protein mRNA
β-tricalcium phosphate-filled bone rat femur Morphometric analysis bone related protein mRNA
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2009/3/2
The purpose of the current study was to evaluate the bone formation when β-tricalcium phosphate (TCP) was implanted in bone defects of rat femurs. β-TCP granules were applied to defects created in t...
静态和动态条件下股骨假体结构参数研究
股骨假体 有限元分析 疲劳分析
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2009/1/20
目的：对比研究静态加载和动态加载条件下股骨柄长度和横截面形状对股骨柄上应力及疲劳的影响。方法：由患者的股骨CT数据重建出股骨模型；设计了三种横截面形状（圆形，鼓形Ⅰ－鼓高8mm，鼓形Ⅱ－鼓高10mm），每种横截面的股骨柄分别有10种长度（40—130mm）；分别对建立的模型进行静态分析和动态分析，其中动态加载力为患者正常走路步态，利用动态分析结果进行疲劳分析。结果：静态分析和动态分析均显示鼓形横截...
半成品高分子纤维矫形器的研制和临床应用
矫形器半成品 高分子纤维材料
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2009/1/20
目的：简化矫形器制作过程、缩短制作时间，提高质量和成品率、增加佩戴舒适性。方法：将高分子纤维材料按照身体不同部位、形状和功能要求，加工成不同厚度和大小的矫形器材料片后密封包装，连同内衬、固定带和固定钉包装成半成品备用。结果：半成品高分子纤维矫形器材料使用方便，明显简化矫形器的制作过程，成品率高，成型后质地坚韧、重量轻、无毒、无味、透气性能好，不影响X线检查，穿戴舒适。结论：半成品高分子纤维矫形器是...