To do so would require a space telescope dedicated to the task, but this is exactly what astronomers could get if the EChO space mission is approved by the European Space Agency (Esa).
R2 relaxivities of MnMNC6-PEG(1 k ~20 k) and MnMNC12-PEG (1 k ~20 k) were measured using the Carr-Purcell-Meiboom-Gill sequence at room temperature: TR = 10 s, 32 echoes with 12 ms even echo space, number of acquisition = 1, point resolution of 156 × 156 μm, section thickness of 0.6 mm.
The T 2 weights of nude mice injected with nanoparticles were measured by Carr-Purcell-Meiboom-Gill sequence at room temperature with the following parameters: TR = 10 s, echoes = 32 with 12 ms even echo space, number of acquisitions = 1, point resolution = 156 × 156 μm, and section thickness = 0.6 mm.
The T 2 weights of the A-MNC and HA-MRCA-treated cells (MDA-MB-231 and MCF-7 cells) were measured by the Carr-Purcell-Meiboom-Gill (CPMG) sequence at room temperature with the following parameters: TR = 10 s, 32 echoes with 12-ms even echo space, number of acquisitions = 1, point resolution of 156 × 156 μm, and section thickness of 0.6 mm.
In addition, the relaxation rate (R 2, unit of s−1) for various Fe concentrations of Apt-MNC was measured at room temperature by the Carr-Purcell-Meiboom-Gill sequence: TR = 10 s, 32 echoes, 12 ms even echo space, number of acquisitions = 1, point resolution 156 × 156 μm, and section thickness 0.6 mm.
T2 relaxivity (r 2 (s−1 mM−1); ratio of R2 (1/to) to iron concentration) of MNCs was measured at room temperature by the Carr-Purcell-Meiboom-Gill sequence: TR = 10 s, 32 echoes, with 12 ms even echo space, number of acquisitions = 1, point resolution 156 × 156 μm, section thickness 0.6 mm.
Images of each participants brain were collected with a 2-s repetition time, a Echo Time of 30 ms, a flip angle of 78°, echo spacing of.51 ms and a bandwidth of 2,232 Hz/Px.
Morphological T2-weighted (T2W) images with a repetition time (TR) of 2500 ms, an echo time (TE) of 33 ms, an echo spacing 11 ms, rare factor 6 a signal average of 2. In all, 21 slices were acquired.
The fluid component decomposition (FCD) is applied to construct the forward T1 T2 model of the kerogen, and numerical simulations are conducted to investigate factors which may influence inversion results including echo spacing, recovery time series, signal to noise ratio (SNR), and the maximal iteration time.
T2 measurements are also influenced by echo spacing [9].
Using this T2 distribution model, we generated echo trains with 500 echoes, where echo spacing is 0.9 ms.
