relaxometry


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relaxometry

(rē-lăk-sŏm′ĕ-trē) [″ + ″]
In magnetic resonance imaging, the measurement of the time it takes for excited nuclei to return to their basal state.
References in periodicals archive ?
patient monitoring for ecg, pulse oximetry, respiratory rate, non-invasive and invasive blood pressure, temperature, sleep depth, relaxometry. adjustable alarm limits.
From 1993, he extended the scope of proton NMR relaxometry to the study of water states and dynamic properties in normal, preneoplastic and neoplastic tissues, organisms under development (seeds, fish eggs and embryos), and biological fluids.
(d) Upon the completion of 10, 20, 30 and 40 cycles, the rock samples were measured by nuclear magnetic resonance relaxometry and nuclear magnetic resonance (NMR) system.
All three different practices may be correct and acceptable, if, at the time of extubation, the neuromuscular transmission has recovered to a train of four (TOF) ratio of at least 0.9, which in turn must have been confirmed by quantitative relaxometry. In this investigation, we analysed anaesthetic records from cases in which rocuronium was antagonised with either neostigmine or sugammadex or in which rocuronium was allowed to recover spontaneously without reversal.
Tian, "Influence of drying-wetting cycles on soil-water characteristic curve of undisturbed granite residual soils and microstructure mechanism by nuclear magnetic resonance (NMR) spin-spin relaxation time (T2) relaxometry," Canadian Geotechnical Journal, vol.
A 2D multigradient echo (MGE) relaxometry pulse sequence with fat suppression was used with the following parameters: 16 evenly spaced 3 ms TEs, TR 1.2 s, matrix 256 x 256 in the plane data matrix with 25-49 slices, an in-plane spatial resolution of 0.1 mm x 0.1 mm with a slice thickness of 0.5 mm, and RF flip angle of 90[degrees].
Careche, "Low field nuclear magnetic resonance (LF-NMR) relaxometry in hake (Merluccius merluccius, L.) muscle after different freezing and storage conditions," Food Chemistry, vol.
Ghugre, "Practical medical applications of quantitative MR relaxometry," Journal of Magnetic Resonance Imaging, vol.
Lo, "Characterization of water distribution in xanthan-curdlan hydrogel complex using magnetic resonance imaging, nuclear magnetic resonance relaxometry, rheology, and scanning electron microscopy," Journal of Food Science, vol.
Yang, "Determination of residual oil distribution during waterflooding in tight oil formations with NMR relaxometry measurements," Energy & Fuels, vol.
In addition, MRI provides information about cardiac necrosis and fibrosis through late gadolinium-enhanced imaging, iron overload measurement, and myocardial tissue characterization by relaxometry [73].
This edition has new chapters on general MR safety, contrast safety, MR elastography, MR relaxometry, and motion correction; 100 new board-style questions in a separate chapter; and discussion of susceptibility-weighted imaging, including other potential spin-off uses beyond hemorrhage detection.