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TI-RADS ACR




Tags: Thyroid Imaging Reporting and Data System, endocrinology, oncology


Composition:
Cystic or almost completely cystic;
Spongiform, composed predominantly (> 50 %) of small cystic spaces. Do not add further points for other categories;
Mixed cystic and solid, assign points only for predominant solid component;
Solid, or almost completely solid, or composition cannot be determined because of calcification.
Echogenicity:
Anechoic (Cystic or almost completely cystic);
Hyper- или isoechoic (copmared to adjacent parenchyma), or if echogenicity cannot be determined;
Hypoechoic (copmared to adjacent parenchyma);
Very hypoechoic (more than strap muscles).
Shape:
Wider-than-tall;
Taller-than-wide (should be assessed on a transverse image with measurement parallel to ultrasound beam for height and perpendicular for width).
Margin:
Smooth;
Ill defined, or if margin cannot be determined;
Lobulated (protrusion into adjacent tissue) or irregular (jagged, spiculated or sharp angles)
Extra-thyroidal extension.
Echogenic Foci:
None or large comet-tail artifacts (V-shaped, > 1 mm, in cystic component);
Macrocalcifications (with acoustic shadowing);
Peripheral (rim) calcifications (complete or incomplete along margin);
Punctate echogenic foci (may have small comet-tail artifacts).



*Also see calculator Thyroid volume

*For abbreviations, see Dictionary