TI-RADS Research Registry™ (TIRR)

The ACR Thyroid Imaging, Reporting and Data System (TIRR) was developed with the aim of reducing unnecessary thyroid biopsies while capturing clinically significant malignancies. The TI-RADS Research Registry is a multi-institutional research registry with the objective to compare ACR TI-RADS to other thyroid ultrasound risk stratification systems. Evidence-based validation of ACR TI-RADS is important given the ongoing movement towards value-based imaging and the existence of different thyroid biopsy guidelines from multiple other groups.