MRI EXAM QUESTIONS AND ANSWERS 100% CORRECT

MRI EXAM QUESTIONS AND ANSWERS 100% CORRECT

Question 13: FMRI is a rapid MR technique that acquires images of the brain during an activity
or stimulus and at rest. The most important physiological effect that produces MR signal
intensity changes between a stimulus and a rest is called Blood Oxygenation Level Dependence
(BOLD). Which pulse sequence is used in FMRI specifically because BOLD effects are very short
lived?



a. Conventional spin echo

b. Echo imaging

c. Fast gradient echo

d. Fast spin echo

e. Turbo echo - Correct Answer-c. fast gradient echo



What MRI image will be produced with a spin echo pulse sequence having a short TR and short
TE value?

a. DWI

b. FLAIR

c. PDWI

d. T1WI

e. T2WI - Correct Answer-D. T1wi



Which MRI pulse sequence uses a 90º excitation pulse followed by 180º rephasing pulse
followed by an echo as seen in the figure below?

, a. Conventional spin echo

b. Fast spin echo

c. FLAIR

d. Gradient echo e. STIR - Correct Answer-Conventional spin echo



Which extrinsic contrast parameter controls how imaging is derived in diffusion weighted
imaging?



a. B factor

b. Flip angle

c. Gyromagnetic ratio d. T2*

e. Turbo factor - Correct Answer-a. B factor



FMRI uses blood oxygen level dependence (BOLD) to exploit differences in the magnetic
susceptibility of oxyhaemoglobin and deoxyhaemoglobin. Which MRI contrast parameter,
controlled by the MRI operator, is used to acquire FMRI?



a. Flip angle

b. TE

c. TF

d. TI

e. TR - Correct Answer-b. TE



There are certain absolute contraindications to MRI. Which condition, situation or medical
implant, when present excludes a patient from getting an MRI?

a. Artificial heart valve b. Acritical hips