MRI Q_5: Some questions have a single correct solution (marked multiple choice),

Question

MRI Q_5: Some questions have a single correct solution (marked multiple choice), and some have several correct solutions (marked multiple answer).

1)Multiple Answer: In MRI the resonant frequency of a specific tissue is determined or affected by the:

A)Specific isotope being imaged

B)Characteristics of the molecule

C)Orientation of magnetic field

D)Strength of the magnetic field

2)Multiple Answer: T1 and T2 values depend on:

A)Voxel size.

B)Direction of magnetic field.

C)Type of tissue.

D)Molecular size.

3)Multiple Choice: Which of the following factors (in ms) would be most appropriate to produce a T1-weighted image? (ONE ANSWER)

A)TR = 2,000, TE = 20.

B)TR = 2,000, TE = 100.

C)TR = 500, TE = 20.

D)TR = 500, TE = 100.

4)Multiple Choice: What color is water in a T1 weighted MRI scan?

A)White

B)Dark gray

C)Black

D)Light gray

5)Multiple Choice: Which of these are different colors on T1 and T2 weighted MRI images?

A)Cortical bone

B)Flowing blood

C)Fat

D)None of the listed

6)Multiple Answer: The proton resonant frequency of tissue in MRI is determined by:

A)Type of tissue (fat, fluid).

B)Strength of magnetic field.

C)Direction of magnetic field.

D)T1 and T2 values.

Explanation / Answer

Answer: B, C and D

In MRI the resonant frequency of a specific tissue is determined or affected by the types of molecules, therefore different tissues shows different signal strength and orientation of the magnetic fields.

Related Questions

Navigate

• Browse (All)
• Browse M
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.