Xiaolong Zhou

4 Questions 13 Answers 0 Followers

Questions related from Xiaolong Zhou

T2>2*T1 components often appear in NMR T1-T2 map. Why?

Theoretically speaking, T2 can never be greater than 2*T1. (ref: https://dtrx.de/od/mmm/mmm_20180117.pdf). But why T2>2*T1 components often appear in NMR T1-T2 correlation maps?

29 November 2018 9,192 3 View

How to correct the relaxation time dependent distortion produced by NMR relaxometry inversion algorithm?

The peaks at small T2 appear less intense than the peaks at higher T2 even if the peaks area is correctly evaluated. This suggests a relaxation time dependent distortion of the reproduced peak...

19 July 2016 7,434 8 View

What's wrong with my MATLAB implementation of Partial Fourier construction based on conjugate symmetry?

% simple example (2D, single coil, no phase errors) N = 256;pf = 9/16; % a typical large partial fourier factorp = single(phantom(N));kspRef = fftshift(fftshift( fft(fft( fftshift(fftshift( p,...

19 April 2015 5,974 4 View

Only 90-deg RF pulses could generate Stimulated Echoes?

Whereas a spin echo (SE)arises from the action of two RF pulses, a stimulated echo (STE)occurs from the action of three or more RF pulses. To generate STE, should all RF pulses be 90-deg RF...

01 January 1970 4,642 1 View