Biomedical Engineering > GATE 2023 > Magnetic Resonance Imaging
The free induction decay (FID) in the MRI of an object can be approximated as
s(t)=∫∫m(x,y)e-j2π(Kx(t)x+Ky(t)y)dxdy,
where Kx(t)=∫0tGx(τ)dτ and
Ky(t)=∫0tGy(τ)dτ
. Here Gx and Gy are pulses of identical period and are in-phase. By changing the amplitude of the pulses, one can obtain the two dimensional Fourier transform of the object
s(t)=∫∫m(x,y)e-j2π(Kx(t)x+Ky(t)y)dxdy,
where Kx(t)=∫0tGx(τ)dτ and
Ky(t)=∫0tGy(τ)dτ
. Here Gx and Gy are pulses of identical period and are in-phase. By changing the amplitude of the pulses, one can obtain the two dimensional Fourier transform of the object
Correct : a
Similar Questions
In the process of obtaining a Magnetic Resonance Image (MRI), the terms T1 and T2 time constants of the material are very crucial to decide on getting suitable...
The MRI scanner parameter of long TRep or short ΓEcho will generate a _______ contrast image.
A patient is initially imaged in a 1 Tesla MRI scanner and induced voltage is found to be equal to V1. The expression for the magnitude of the received voltage...
Total Unique Visitors
Loading......