Three-dimensional in vivo magnetic resonance microscopy of beech (Fagus sylvatica L.) wood
Tóm tắt
Spatial structure and water distribution in branch tissues after mechanical injury were investigated in vivo by three-dimensional (3D) magnetic resonance (MR) microscopy. On a beech tree (Fagus sylvatica L.), transplanted in a portable pot, a branch was topped and then MR imaged. High-resolution 3D MR images revealed structures which could not be identified by conventional MR images or by light microscopy. MR measurements confirmed our assumption that moisture content is decreasing towards the wounded part of the branch. This indicates that quick moisture loss from mechanically wounded tissues represents the initial passive response of compromised tissue.
Tài liệu tham khảo
Dinwoodie JM (2000) Timber: its nature and behaviour. E & FN Spon, London and New York
Savidge RA (2003) Tree growth and wood quality. In: Barnett JR, Jeronimidis G (eds) Wood quality and its biological basis. Blackwell, Oxford, UK, pp 1–29
Shigo, AL (1986) A new tree biology with dictionary. Shigo and Trees Associates, Durham, NH, USA
Chang SJ, Olson JR, Wang PC (1989) NMR imaging of internal features in wood. Forest Prod J 39:43–49
Wang PC, Chang SJ (1986) Nuclear magnetic resonance imaging of wood. Wood Fiber Sci 18:308–314
Beravs K, Oven P, Serša I, Torelli N, Demšar F (1998) Electric current density imaging of pedunculate oak (Quercus robur L.) twigs by magnetic resonance imaging. Holzforschung 52:541–545
Flibotte S, Menon RS, MacKay AL, Hailey JRT (1990) Proton magnetic resonance of western red cedar. Wood Fiber Sci 22:362–376
Coates ER, Chang SJ, Liao TW (1998) A quick defect detection algorithm for magnetic resonance images of hardwood logs. Forest Prod J 48:68–74
Morales S, Guesalaga A, Fernández MP, Guarini M, Irarrázaval P (2004) Computer reconstruction of pine growth rings using MRI. Magn Reson Imaging 22:403–412
Pearce RB, Sümer S, Doran SJ, Carpenter TA, Hall LD (1994) Non-invasive imaging of fungal colonization and host response in the living sapwood of sycamore (Acer pseudoplatanus L.) using nuclear magnetic resonance. Physiol Mol Plant Pathol 45:359–384
Bucur V (2003a) Nondestructive characterization and imaging of wood. Springer, Berlin Heidelberg New York
Bucur V (2003b) Techniques for high resolution imaging of wood structure: a review. Meas Sci Technol 14:R91–R98
Grosser D (1977) Die Hölzer Mitteleuropas – Ein mikrophotographischer Lehratlas. Springer, Berlin Heidelberg New York
Torelli N, Demšar F, Oven P, Jarh O, Sepe A, Križaj B (1990) MRI of living tissues of affected and healthy silver firs (Abies alba MILL). Farm Vest 41:339–343