Magnetic resonance imaging relaxometry

In vivo magnetic resonance imaging and relaxometry of a porous hydrogel implanted in the trapezius muscle of rabbits was studied. 

Koenig, S.H. Brown HI, R.D. (1987), Relaxometry of magnetic resonance imaging contrast agents. Magn. Reson. Annu., 5 263-286. 

Marcos, M., P. Cano, P. Fantazzini, C. Garavaglia, S. Gomez, and L. Garrido (2006). NMR relaxometry and imaging of water absorbed in biodegradable polymer scaffolds. Magnetic Resonance Imaging 24(l) 89-95. 

There is a class of physically small, benchtop NMR instruments available, useful for dedicated quantitative analysis. These instruments are pulsed, time-domain NMRs (TD-NMRs). TD-NMR is also called relaxometry. TD-NMR does not deal with spectroscopy or magnetic resonance (MR) images. The TD-NMR instrument is usually a small benchtop or handheld, low-resolution and low-field analyzer designed to detect hydrogen or fluorine nuclei. TD-NMR analysis is quantitative and rapid (normally within seconds or minutes). It is also nondestructive and noninvasive. Thanks to these advantages and its ease of use, it is widely used for routine analysis in agriculture, food science, polymer, chemical, petroleum, and pharmaceutical and medical industries. 

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