Why the study?
Does a sinc-modulated RF pulse train improve cardiac tagging compared to DANTE and SPAMM techniques in MRI?
Does a sinc-modulated RF pulse train improve cardiac tagging compared to DANTE and SPAMM techniques in MRI?
A sinc-modulated RF pulse train improves MRI cardiac tagging by providing sharper-edged tags and adjustable tag width-to-separation ratios compared to traditional methods.
Hypothesis-generating for refined cardiac tagging; leaves open human validation before any clinical use.
A method of spatial modulation of magnetization using the RF pulse train is described for improved cardiac tagging. The method is based on a sinc-modulated RF pulse train in the presence of constant gradient. Such an RF pulse train yields a rectangular profile of saturated magnetization, and the bandwidth of the sinc envelope controls the width of the saturation tag. Compared to DANTE and SPAMM tagging techniques, this method offers sharper-edged tags and the ability to change the ratio of tag width to tag separation. The approach was implemented on a 9.4 T vertical bore NMR system and demonstrated with both phantom and in vivo mouse heart studies.
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Wu et al. (2002) studied this question.