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基于核磁共振成像的水果轻微损伤识别（Detecting Subtle Bruises on Fruits with Nuclear Magnetic Resonance Imaging）
鸭梨 核磁共振成像 无损检测 角点检测
2010/12/29
以鸭梨为对象，采用核磁共振成像设备扫描获得轻微损伤鸭梨冠状面图像，使用Matlab软件完成图像预处理，采用自动阈值分割目标区域，并提取鸭梨层切面边界，最后采用角点检测方法检测鸭梨是否有轻微损伤。实验结果表明，核磁共振成像技术对水果轻微损伤的检测精度达92.1%，对正常和畸形水果的检测精度达100%。
APPLICATION OF MAGNETIC RESONANCE IMAGING FOR RESEARCH OF ANATOMY AND MOISTURE CONTENT OF WOOD
MR microscopy beech Fagus sylvatica living wood wood anatomy moisture content
2009/11/26
Feasibility of nuclear magnetic resonance (NMR) was tested for research of anatomy and moisture content of wood. A three m high living beech tree (Fagus sylvatica L.) was imaged by magnetic resonance ...
A Magnetic Resonance Imaging Technique for Quantitative Mapping of Moisture and Fat in a Cheese Block
cheese chemical shift selective magnetic resonance imaging moisture and fat distribution
2008/3/28
Separate magnetic resonance images of water and fat of oil-in-water emulsions and cheese blocks were obtained using the chemical shift selective suppression technique. With this technique, the proton ...
Novel statistical approach for segmentation of brain magnetic resonance imaging using an improved expectation maximization algorithm
expectation maximization maximum likelihood magnetic resonance imaging (MRI)
2011/4/28
In this paper, an improved expectation maximization (EM) algorithm called statistical histogram based expectation maximization (SHEM) algorithm is presented. The algorithm is put forward to overcome t...
Hyperpolarized 3He gas production by metastability exchange optical pumping for magnetic resonance imaging
hyperpolarized 3He lung imaging low field MRI
2011/4/26
A portable 3He gas polarizer based on metastability exchange optical pumping is described. It produces 75 ml of highly polarized 3He gas at the pressure of 100 mbar, by implementing a non-magnetic per...