Magnetic susceptibility shift selected imaging (MESSI) and localized1H2O spectroscopy in living plant tissues

From genome to function: the Arabidopsis aquaporins

“…Nuclear magnetic resonance (NMR) imaging (MRI) allows the distribution of tissue water to be quantified, and also allows the mapping of flow and of diffusion [65][66][67][68][69]. The potential for directly discriminating intracellular and extracellular water signals in plant cells and root tissues has been shown [70] and this opens the door to spectroscopic and imaging-based measurements of water flow in vivo ( [70,71] and J. Rosenberg, Y.S-H., H. Wang and H.J.B., unpublished results).…”

From genome to function: the Arabidopsis aquaporins

“…Nuclear magnetic resonance (NMR) imaging (MRI) allows the distribution of tissue water to be quantified, and also allows the mapping of flow and of diffusion [65][66][67][68][69]. The potential for directly discriminating intracellular and extracellular water signals in plant cells and root tissues has been shown [70] and this opens the door to spectroscopic and imaging-based measurements of water flow in vivo ( [70,71] and J. Rosenberg, Y.S-H., H. Wang and H.J.B., unpublished results).…”

Effects of the Magnetic Resonance Imaging Contrast Agent Gd-DTPA on Plant Growth and Root Imaging in Rice

“…This study demonstrates the potential of Gd-DTPA for enhancing the signal intensity of MRI and its toxicological effects on rice. Zhong et al [13] used the paramagnetic agents GdDTPA 2– and DyDTPA-BMA to enhance the images of maize root fragments, employing a Gd-DTPA 2– concentration of 10 mmol. According to this study, the concentration of Gd-DTPA was set around 10 mmol.…”

Intracellular water‐specific MR of microbead‐adherent cells: the HeLa cell intracellular water exchange lifetime

“…The equilibrium condition requires an equal rate of water exchange between the two compartments and, thus, that the lifetimes of intracellular and extracellular compartments (τ in and τ ex ) are proportional to the aqueous population fractions of the two compartments (f in and f ex ), [4] Given f in / f ex ~ 5/100 and, as will be discussed below, τ in ~ 100 ms, τ ex is then on the order of 2 s for the microbead-adherent HeLa cell system under study. Thus, the conditions required to simplify the Bloch equations hold.…”

From genome to function: the Arabidopsis aquaporins

“…Nuclear magnetic resonance (NMR) imaging (MRI) allows the distribution of tissue water to be quantified, and also allows the mapping of flow and of diffusion [65][66][67][68][69]. The potential for directly discriminating intracellular and extracellular water signals in plant cells and root tissues has been shown [70] and this opens the door to spectroscopic and imaging-based measurements of water flow in vivo ( [70,71] and J. Rosenberg, Y.S-H., H. Wang and H.J.B., unpublished results).…”

Effects of the Magnetic Resonance Imaging Contrast Agent Gd-DTPA on Plant Growth and Root Imaging in Rice

“…This study demonstrates the potential of Gd-DTPA for enhancing the signal intensity of MRI and its toxicological effects on rice. Zhong et al [13] used the paramagnetic agents GdDTPA 2– and DyDTPA-BMA to enhance the images of maize root fragments, employing a Gd-DTPA 2– concentration of 10 mmol. According to this study, the concentration of Gd-DTPA was set around 10 mmol.…”

Intracellular water‐specific MR of microbead‐adherent cells: the HeLa cell intracellular water exchange lifetime

“…The equilibrium condition requires an equal rate of water exchange between the two compartments and, thus, that the lifetimes of intracellular and extracellular compartments (τ in and τ ex ) are proportional to the aqueous population fractions of the two compartments (f in and f ex ), [4] Given f in / f ex ~ 5/100 and, as will be discussed below, τ in ~ 100 ms, τ ex is then on the order of 2 s for the microbead-adherent HeLa cell system under study. Thus, the conditions required to simplify the Bloch equations hold.…”

From genome to function: the Arabidopsis aquaporins

“…Nuclear magnetic resonance (NMR) imaging (MRI) allows the distribution of tissue water to be quantified, and also allows the mapping of flow and of diffusion [65][66][67][68][69]. The potential for directly discriminating intracellular and extracellular water signals in plant cells and root tissues has been shown [70] and this opens the door to spectroscopic and imaging-based measurements of water flow in vivo ( [70,71] and J. Rosenberg, Y.S-H., H. Wang and H.J.B., unpublished results).…”

Effects of the Magnetic Resonance Imaging Contrast Agent Gd-DTPA on Plant Growth and Root Imaging in Rice

“…This study demonstrates the potential of Gd-DTPA for enhancing the signal intensity of MRI and its toxicological effects on rice. Zhong et al [13] used the paramagnetic agents GdDTPA 2– and DyDTPA-BMA to enhance the images of maize root fragments, employing a Gd-DTPA 2– concentration of 10 mmol. According to this study, the concentration of Gd-DTPA was set around 10 mmol.…”

Intracellular water‐specific MR of microbead‐adherent cells: the HeLa cell intracellular water exchange lifetime

“…The equilibrium condition requires an equal rate of water exchange between the two compartments and, thus, that the lifetimes of intracellular and extracellular compartments (τ in and τ ex ) are proportional to the aqueous population fractions of the two compartments (f in and f ex ), [4] Given f in / f ex ~ 5/100 and, as will be discussed below, τ in ~ 100 ms, τ ex is then on the order of 2 s for the microbead-adherent HeLa cell system under study. Thus, the conditions required to simplify the Bloch equations hold.…”