Magnetic resonance imaging (MRI)

A liver observation in a patient at high risk for HCC, on multiphase CT or MRI.

ACR LI-RADS v2018 (CT/MRI)

Detection and grading of diffuse hepatic steatosis across modalities.

Cross-modality steatosis criteria

Characterization of a cystic renal mass on contrast-enhanced CT or MRI.

Bosniak version 2019

Characterization and surgical staging of a solid, enhancing renal mass.

RENAL nephrometry (Kutikov & Uzzo 2009)

Incidentally detected adrenal nodule characterized on CT or MRI.

ACR incidental adrenal mass (2017)

Multiparametric prostate MRI for elevated PSA or suspected cancer.

PI-RADS v2.1 (2019)

Problem-solving MRI of an adnexal lesion that is indeterminate on ultrasound (O-RADS US 4–5 or sonographically indeterminate).

ACR O-RADS MRI (2020/2022)

Assessment of splenic size and splenomegaly.

Splenic index (Prassopoulos 1997)

Objective tumour-response assessment at a follow-up scan against baseline and the prior nadir.

RECIST 1.1 (2009)