T1rho space dependence in rigid polymers by effective radio frequency gradient.
An extension of the solid-state nuclear magnetic resonance (NMR) imaging based on magic angle in the rotating frame (MARF) line narrowing approach is presented. The modified magic angle in the rotating frame imaging sequence is able to yield T1rho maps of large band polymers with remarkable contrast sensitivity and without contrast parameter alteration referable to the narrowing procedure. This last feature is examined closely in order to outline the actual effectiveness of the method. Further experimental details, especially regarding probe coil design, recently improved, are discussed and some new results are presented.
Dipartimento di Fisica, Università La Sapienza, Roma, Italy. francesco.deluca@roma1.infn.it
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De Luca
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Gargaro
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Maraviglia
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GH
Raza
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Casieri
D007091:Image Processing, Computer-Assisted; D009682:Magnetic Resonance Spectroscopy; D008961:Models, Structural; D019047:Phantoms, Imaging; D011095:Polyethylenes / Q000737:chemistry; D011108:Polymers / Q000737:chemistry*; D019904:Polymethyl Methacrylate / Q000737:chemistry; D011140:Polyurethanes / Q000737:chemistry; D011846:Radio Waves; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity
D011095:Polyethylenes; D011108:Polymers; D011140:Polyurethanes; D019904:Polymethyl Methacrylate