Biomedical Engineering > GATE 2022 > Magnetic Resonance Imaging
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 weighted images. Choose the correct explanation relating to these two constants from the following options.
A
T1 is the spin-lattice or longitudinal relaxation time, and T2 is the spin-spin or transverse relaxation time
B
T1 and T2 indicate the durations that Free Induction Decay (FID) signal to be recorded in x and y axes directions, respectively
C
T1 and T2 refer to the durations of flipping pulses used to tilt the resultant magnetic vector into x-y plane and inverse z-direction, respectively
D
T1 is the spin-spin or transverse relaxation time, and T2 is the spin-lattice or longitudinal relaxation time

Correct : a

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