A transportable magnetic resonance imaging system for in situ measurements of living trees: The Tree Hugger

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• 作者：M. Jones^a ; P.S. Aptaker^b ; J. Cox^a ; B.A. Gardiner^c ; ¹ ; P.J. McDonald^a ; ^{p.mcdonald@surrey.ac.uk}
• 关键词：Nuclear magnetic resonance (NMR) ; Magnetic resonance imaging (MRI) ; Wood ; Tree ; Water
• 刊名：Journal of Magnetic Resonance
• 出版年：2012
• 期刊代码：126_10907807
• 类别：ch
• 出版时间：May, 2012
• 卷：218
• 期：Complete
• 页码：133-140
• 文件大小：573 K

摘要

This paper presents the design of the 鈥楾ree Hugger鈥? an open access, transportable, 1.1 MHz ¹H nuclear magnetic resonance imaging system for the in situ analysis of living trees in the forest. A unique construction employing NdFeB blocks embedded in a reinforced carbon fibre frame is used to achieve access up to 210 mm and to allow the magnet to be transported. The magnet weighs 55 kg. The feasibility of imaging living trees in situ using the 鈥楾ree Hugger鈥?is demonstrated. Correlations are drawn between NMR/MRI measurements and other indicators such as relative humidity, soil moisture and net solar radiation.