Precontrast, 3-dimensional, Isotropic, IR-prepped T1-weighted Gradient Echo MRI

**Semantic type:** Diagnostic Procedure

**Definition:** 3-dimensional, T1-weighted magnetic resonance imaging that uses gradient-echo acquisition with inversion recovery, in the absence of a contrast agent.

**Synonyms:** - 3D Pre-Contrast T1-Weighted IR-GRE