Adnexal Mass Risk Tools
Ultrasound risk systems and MRI risk systems are written for different examinations. Simple Rules can come back inconclusive, which is a result, not a failure of the calculator. ADNEX and RMI are models with their own inputs. Use the page that matches the test in front of you.
Educational reference for qualified professionals. Confirm the result against the source cited on the tool page and against local protocol.
Ultrasound and MRI
Do not carry an ultrasound category across onto an MRI report under the same name.
- O-RADS Ultrasound (Adnexal Lesion Risk Stratification)Calculator
O-RADS US for an adnexal lesion on ultrasound.
- O-RADS MRI Risk Stratification (Adnexal Lesion)Calculator
O-RADS MRI. A different system from the ultrasound score.
- IOTA Simple Rules (Adnexal Mass)Calculator
IOTA Simple Rules. Inconclusive is an expected output and means a second-stage test.
- ADNEX Model (IOTA)Calculator
IOTA ADNEX model, when you have the measurements the model asks for.
- RMI (Risk of Malignancy Index)Calculator
Risk of Malignancy Index from ultrasound, menopausal status and CA-125.
- Adnexal mass — characterisation and risk stratificationVetting
Which study an adnexal mass needs for characterisation.
Questions these pages get
O-RADS US or O-RADS MRI?
Whichever examination you are reporting. They are separate systems with separate calculators. Simple Rules and ADNEX are further ultrasound-based tools and do not produce an O-RADS category.