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vol. 12, nr. 1 (2008)
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Quality assessment of apples using low field magnetic resonance imaging
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Mateusz Suchanek1, Zbigniew Olejniczak2
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1 Department of Physics, Agricultural University, Al. Mickiewicza 21, 31-120 Kraków |
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2 M. Smoluchowski Institute of Physics, Jagiellonian University, ul. Reymonta 4, 30-059 Kraków |
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3 Institute of Nuclear Physics, Polish Academy of Sciences ul. Radzikowskiego 152, 31-342 Kraków |
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vol. 12 (2008), nr. 1,
pp. 183-190
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abstract:
In order to assess the quality of apples it is neccessary to determine the structural changes in their tissues, related to changes of water distribution. Magnetic Resonance Imaging (MRI) is a nondestructive method for measurement of spatial distribution of water in biological material and its physical properties. Therefore, it can be used to detect mechanical damage and internal diseases of apples. The MRI experiments were carried out on a low field (0.088 T) system. The temporal evolution of the internal browning process in apples was studied by recording MRI images, using the spin echo (SE) sequence. By varying the echo time (TE) and repetition time (TR), proton density and T2 weighted images were obtained and compared. In order to shorten the acquisition time, fast imaging sequences, like FSE and FLASH, were also used, which provided similar spatial information about the disease affected tissue of the fruit.
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keywords:
magnetic resonance imaging, MRI, apples, quality
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original in:
Polish
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