Question One: Describe how extrinsic sequence parameters (TR, TE, flip angle and
inversion time) can be used to modulate image contrast.
Question Two: Describe the nature of k-space, specifically focusing on the relationship
between the detected signal, k-space and the final image.
Question Three: Using a pulse sequence diagram to support your answer, describe
how magnetic field gradients are used to localise signal in three dimensions.
Question Four: For a group of excited nuclei, describe how spin-lattice and spin-spin
interactions cause the net magnetisation to return to equilibrium. Include an
explanation of how these interactions are related to intrinsic tissue properties (T1, T2,
T2* and proton density).
Question Five: Describe the different roles that radiofrequency (RF) coils play in MR
imaging and identify the key features that need to be considered when selecting an RF
coil for any particular examination
Sample Solution
