Radiology Practice

20 learning units • 10 questions per unit • 200 explained questions

Module 07 — MRI Sequences & Safety

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Question 01 • Single best answer

Which physical combination underlies MRI?

A. X-rays and film alone B. Sound echoes and gel alone C. Magnetic fields and radiofrequency signals D. Gamma rays from every patient

Question 02 • Single best answer

How does simple fluid commonly appear on conventional T2-weighted imaging?

A. Always identical to cortical bone B. Always completely suppressed C. Bright D. Always darker than air

Question 03 • Single best answer

Why is the phrase bright lesion incomplete in MRI?

A. Brightness identifies malignancy in every sequence B. MRI never displays brightness C. All sequences look identical D. Signal must be related to the sequence

Question 04 • Single best answer

What does FLAIR commonly suppress?

A. Every solid brain lesion B. Free cerebrospinal-fluid signal C. All arterial flow in every case D. Every fat-containing tissue automatically

Question 05 • Single best answer

What supports true diffusion restriction when DWI is bright?

A. High ADC in every case B. A normal radiograph alone C. Brightness without any other sequence D. Low ADC in the corresponding region

Question 06 • Single best answer

Which can reduce MRI quality?

A. Correct hearing protection B. Verified implant screening C. Patient motion D. Appropriate sequence selection

Question 07 • Single best answer

What does MR Conditional mean?

A. The device may be scanned only under specified conditions B. Safe in every scanner without checks C. Never safe under any circumstances D. Made entirely of nonmetallic material

Question 08 • Single best answer

Why is a prior uneventful MRI insufficient for current screening?

A. All prior MRI examinations are invalid B. The magnet becomes harmless after one visit C. Screening is needed only for contrast D. Devices, conditions and patient circumstances may differ

Question 09 • Single best answer

What is a major risk of bringing ferromagnetic equipment near the scanner?

A. Unavoidable ionizing radiation B. Automatic sterilization C. Complete loss of all image contrast only D. Projectile movement toward the magnet

Question 10 • Single best answer

Which equipment is appropriate for monitoring in MRI?

A. Any standard oxygen cylinder without checking B. Any metal trolley if moved slowly C. Equipment chosen only by color D. Equipment verified for the MR environment and conditions