Localise

... T2-relaxation. Thus the evolution of the polymerisation/vulcanisation can be observed by T2-weighted MRI methods. Prado et al. (2000) used SPI to localise the vulcanised boundary in rubber. Jackson et al. (1991) and Jezzard et al. (1992) studied the polymerisation of methylmethacrylate to polymethylmethacrylate ...

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... fraction of electron-positron decays result in two 511 keV photons being emitted at almost 180 degrees to each other, hence it is possible to localise their source along a straight line of coincidence (also called formally the "line of response" or LOR). In practice the LOR has a ...

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