Difference between revisions of "Radiology Pearls"
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=MRI= | =MRI= | ||
* Nomenclature: use "intensity". | * Nomenclature: use "intensity". | ||
+ | * Good overview article of [https://pn.bmj.com/content/practneurol/6/5/318.full.pdf MRI principles]. | ||
==Sequences== | ==Sequences== | ||
*T1: pancreas (due to Mn2+ deposition in the pancreas), fat, protein, hemorrhage, melanin, and gadolinium. | *T1: pancreas (due to Mn2+ deposition in the pancreas), fat, protein, hemorrhage, melanin, and gadolinium. |
Revision as of 14:46, 9 June 2023
Resources
- https://www.radiologyeducation.com (links to most of the major radiology websites and a lot of free resources)
- eAnatomy is an excellent tool for understanding MRIs. It’s $30 a year (if you have a free membership, unclear which membership).
- Radsource is another good resource.
- http://radiologyassistant.nl/
MRI
- Nomenclature: use "intensity".
- Good overview article of MRI principles.
Sequences
- T1: pancreas (due to Mn2+ deposition in the pancreas), fat, protein, hemorrhage, melanin, and gadolinium.
- T2: fluid (excluding blood)
- DWI: bright areas are suspicious for infarcts, but can also be T2 shine-through. Dating the chronicity of infarcts can be done with T1 and T2.
- ADC: dark areas on ADC are infarcts, and should correlate with bright areas on DWI.
- GRE: In phase/Out of phase. Most sensitive for assessing iron deposits, steatosis.
- T2-star:
- FLAIR: heavily T2-weighted image which suppresses CSF