Question 1
Which shows the highest signal intensity in T1 -weighted image?
Question 2
Tissue with short T1 shows ( A ) signal intensity on T1 -weighted image and tissue with short T2 shows ( B ) signal intensity on T2 -weighted image. (A , B)
Question 3
When FOV increases, the maximum k-space range also increases.
Question 4
The step size in k-space is inversely related to resolution in image.
Question 5
Which is an essential element to correct magnetic field inhomogeneity in spin echo imaging?
Question 6
Which of the follows is an intrinsic tissue-specific factor to determine contrast?
Question 7
Which statement is correct?
Question 8
In gradient echo imaging, what is optimal flip angle (Ernst angle) for a tissue with T1=1sec when TR = 100 msec?
Question 9
Select the best TE value that maximizes T2 contrast between two tissues with T2 values of 60 msec and 100 msec.
Question 10
Select the best TR value that maximizes proton density contrast between two tissues with T1 values of 800 msec and 1000 msec.
Question 11
Select the best TE value that maximizes T1 contrast between two tissues with T1 values of 800 msec and 1000 msec and T2 values of 60 msec and 100 msec.
Question 12
Brain lesion that contains magnetically various components shows low signal intensity in gradient echo imaging.
Question 13
Which statement is true?
Question 14
The readout prephase gradient is used to generate gradient echo in gradient echo imaging, therefore it is not required in spin echo imaging.
Question 15
K-space region is sampled at interval of Δ Kx within the range of [-Kxmax / 2, Kxmax / 2] along the horizontal direction. A new k-space region is sampled at interval of ΔKxmax / 2 within range of [-Kxmax / 2, Kxmax / 2]. How are the fied of view (FOV) and the resolution affected in the new image compared to the first image?
Question 16
Which is the appropriate way of obtaining high resolution images?