Abstract：
:In porous material research, one main interest of nuclear magnetic resonance diffusion (NMR) experiments is the determination of the shape of pores. While it has been a longstanding question if this is in principle achievable, it has been shown recently that it is indeed possible to perform NMR-based diffusion pore imaging. In this work we present a generalization of these previous results. We show that the specific temporal gradient profiles that were used so far are not unique as more general temporal diffusion gradient profiles may be used. These temporal gradient profiles may consist of any number of "short" gradient pulses, which fulfil the short-gradient approximation. Additionally, "long" gradient pulses of small amplitude may be present, which can be used to fulfil the rephasing condition for the complete profile. Some exceptions exist. For example, classical q-space gradients consisting of two short gradient pulses of opposite sign cannot be used as the phase information is lost due to the temporal antisymmetry of this profile.
journal_name
Magn Reson Imagingjournal_title
Magnetic resonance imagingauthors
Laun FB,Kuder TAdoi
10.1016/j.mri.2013.03.027subject
Has Abstractpub_date
2013-09-01 00:00:00pages
1236-44issue
7eissn
0730-725Xissn
1873-5894pii
S0730-725X(13)00134-3journal_volume
31pub_type
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