MRI Study Guide 2026
Everything you need to pass the MRI exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
📋 MRI Exam Format at a Glance
📚 MRI Topics to Study (30)
✍️ Sample MRI Questions & Answers
1. Which MRI technique encodes functional brain activity by detecting changes in blood oxygenation level?
BOLD fMRI detects regional neural activity via the magnetic susceptibility difference between oxyhemoglobin and deoxyhemoglobin, providing maps of brain activation.
2. Which of the following precautions is required before administering a GBCA to a breastfeeding mother, according to ACR recommendations?
The ACR states that GBCAs enter breast milk in very small amounts (<0.04%) and oral bioavailability is negligible; no interruption is required, though the mother may choose to withhold for 12–24 hours if concerned.
3. Which parameter in MRI controls the field of view (FOV) and therefore directly affects spatial resolution when matrix size is held constant?
Voxel size = FOV divided by matrix; decreasing FOV while maintaining matrix size decreases voxel size, increasing spatial resolution but reducing SNR.
4. Which MRI sequence is most commonly used for evaluating liver lesions using T2 contrast with heavy T2 weighting for the bile ducts?
MRCP uses heavily T2-weighted sequences to make bile and pancreatic fluid appear bright, providing a non-invasive map of the biliary and pancreatic ductal system.
5. Inversion recovery sequences null a specific tissue when the readout pulse is applied at time TI equal to:
The longitudinal magnetization of a tissue crosses zero at TI = T1 × ln(2) ≈ 0.693 × T1; applying the readout at this moment nulls that tissue's signal.
6. Which coil type generally provides the highest SNR for imaging a small superficial structure?
Surface coils placed close to the target anatomy have superior SNR for small or superficial structures because they detect signal from a limited volume with less noise.
🎯 Free MRI Practice Tests
📖 MRI Guides & Articles
- Water T2 MRI and MRI Imaging Sequences: The Complete Guide
- New MRI Technology That Freezes Cancer: How Modern Imaging Is Transforming Oncology
- Valium Before MRI: What You Need to Know About Sedation, Safety, and What to Expect
- Male Pelvis MRI: Complete Guide to Anatomy, Pathology, Protocols, and Patient Preparation
- MRI Machine Image: How MRI Scanners Create Detailed Internal Images
- Rockledge MRI & PET Center: Complete Guide to Advanced Imaging Services
- Define Functional MRI: How fMRI Works, What It Measures, and Why It Matters
- MRI Lesions: A Complete Guide to Detection, Classification, and Clinical Significance