This question-specific review guide is tied to the answer reasoning for a PracticeTestVault item. Use it after you answer the question so the review stays focused on what the prompt actually tested.
What this question is testing
Objective: Sequences: gradient echo
Prompt focus: Compared with spin echo, gradient echo (GRE) sequences are more sensitive to:
Why the correct answer works
Magnetic susceptibility differences (T2*)
GRE is T2*-weighted and susceptibility sensitive.
Why the tempting wrong answer fails
The tempting wrong answer usually loses because it skips the key condition, priority, or evidence in the prompt.
Plain-language takeaway
GRE sequences lack the 180-degree refocusing pulse so they are weighted by T2* and very sensitive to susceptibility, useful for detecting hemorrhage, calcification, and iron deposits.
Simple analogy
Think of sequences: gradient echo like following a short checklist: identify the clue, confirm the rule, and then make the move that fits this exact scenario.
How to review it before a retake
- Underline the command word and name what the question is asking before rereading the choices.
- Compare the correct answer against the closest distractor and write the exact detail that separates them.
- Retest this objective with a fresh question without looking at the rationale first.