TIRADS Flashcards
What are the TIRAD categories?
pneumonic: SCEEM
- Shape
- Composition
- Echogenicity
- Echogenic Foci
- Margins
TIRADS shapes?
- Wider than tall
- Taller than wide
TIRADS composition?
- Cystic or almost completely cystic
- Spongiform
- Mixed cystic and solid (complex)
- Mostly or completely solid
TIRADS echogenicity?
- Anechoic
- Hyper or isoechoic (compared to parenchyma)
- Hypoechoic
- Very hypoechoic (more hypoechoic than compared to surrounding strap muscles)
TIRADS echogenic foci?
- None or large comet-tail (>1mm)
- Macrocalcifications (> or = 2mm)
- Peripheral rim calcification
- Punctate calcifications (<2mm or comet tail <1mm)
TIRADS margins?
- Smooth
- Ill-defined
- Lobulated or irregular
- Extra thyroidal extension
How much of the nodule should be filled with tiny cystic spaces to be considered spongiform?
More than 50%
How much of the nodule should be filled with tiny cystic spaces to be considered spongiform?
More than 50%
When scanning, you notice that the nodule appears spongiform but also contains macro calcs or peripheral calcs, what do you do?
DO NOT classify as spongiform when other suspicious criteria is present.
What should you classify a nodule when echogenicity can’t be clearly determined?
Isoechoic
When a nodule is very hypoechoic, what do other structure do we compare it to?
Surrounding strap muscle
What shape of nodule is most suspicious?
When it is taller than it is wide
When margins can’t be determined, what should you report?
ill-defined border
If composition cannot be clearly determined, how should it be reported?
Solid
When would you comment on TIRADS when a nodule is between 5-10 mm?
If a nodule is between 5-10mm and appears HIGHLY suspicious (TIRADS 5 level), then we would use the descriptors
