NMR studies of anomalous diffusion in biological tissues: experimental observation of L�vy stable processes
M K�pf, R Metzler, O Haferkamp…�- Fractals in Biology and�…, 1998 - Springer
M K�pf, R Metzler, O Haferkamp, TF Nonnenmacher
Fractals in Biology and Medicine, 1998•SpringerUsing an NMR stimulated echo method, various biological tissue specimens were
investigated in the fringe field of a large superconductor with a field gradient of 50 T/m. The
experimental specifications approximate the “narrow pulse condition”, ie an effective
separation of time scales. The method applied measures the Fourier transform of the
probability density in both wave vector and time space. Depending on the micrometre
structure of the samples, the results vary from a simple Gaussian behaviour to asymptotic�…
investigated in the fringe field of a large superconductor with a field gradient of 50 T/m. The
experimental specifications approximate the “narrow pulse condition”, ie an effective
separation of time scales. The method applied measures the Fourier transform of the
probability density in both wave vector and time space. Depending on the micrometre
structure of the samples, the results vary from a simple Gaussian behaviour to asymptotic�…
Abstract
Using an NMR stimulated echo method, various biological tissue specimens were investigated in the fringe field of a large superconductor with a field gradient of 50 T/m. The experimental specifications approximate the “narrow pulse condition”, i.e. an effective separation of time scales. The method applied measures the Fourier transform of the probability density in both wave vector and time space. Depending on the micrometre structure of the samples, the results vary from a simple Gaussian behaviour to asymptotic fractals. We present preliminary results of our current investigations giving evidence for anomalous L�vy walk statistics.
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