Open AccessDevelopment of a mobile magnetic resonance imaging system for outdoor tree measurements
Author(s) -
Takeshi Kimura,
Yuto Geya,
Yasuhiko Terada,
Katsumi Kose,
Tomoyuki Haishi,
Hiroshi Gemma,
Yoshihiko Sekozawa
Publication year - 2011
Publication title -
review of scientific instruments
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.605
H-Index - 165
eISSN - 1089-7623
pISSN - 0034-6748
DOI - 10.1063/1.3589854
Subject(s) - magnetic resonance imaging , electromagnetic shielding , nuclear magnetic resonance , magnet , rotation (mathematics) , tree (set theory) , physics , optics , computer science , materials science , remote sensing , computer vision , geology , medicine , mathematical analysis , mathematics , quantum mechanics , radiology
By combining a 0.3 T permanent magnet with flexible rotation and translation mechanism, a probe with a local electromagnetic shielding, several electrical units, a mobile lift, and an electric wagon, a mobile magnetic resonance imaging (MRI) system was developed for outdoor tree measurements. 2D cross-sectional images of normal and diseased branches of a pear tree were acquired for measurements of T1, T2, proton density, and apparent diffusion constant (ADC). The ADC map clearly differentiated diseased from normal branches. A whole-day measurement of the ADC map demonstrated that microscopic water flow in the normal branch changed proportionally with solar radiation. Therefore, we have concluded that our mobile MRI system is a powerful tool for studies of plants in outdoor environments
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom