The most common MRI sequences are T1-weighted and T2-weighted scans. T1-weighted images are produced by using short TE and TR times. The contrast and brightness of the image are predominately ...

T2 and proton density. MR scans that bring out T1 contrast are defined as T1-weighted. The primary basis for different types of contrast in MRI is the choice of two scan parameters: TR (repletion ...

or enhancement on normal MRI scans, they may affect myocardial nuclear magnetic resonance (NMR) properties, including T1 and T2 relaxation times. Estimates of relaxation times can be produced ...

Each of the patients underwent standard lumbar MRI in the axial and sagittal planes without contrast using T1 and T2 sequences. Then they underwent the experimental T1 fast spin-echo MRI sequence ...

This T1 MRI contrast agent based on ultrasmall iron ... while the current iron oxide is classified as T2. Previously, the IBS team designed ultrasmall T1 iron oxide nanoparticles (PEG-IONCs ...

Radiologists can "weight" the results of an MRI and make specific tissues appear either brighter or darker by varying the conditions of the test. Two weighting techniques -- T1 and T2 -- are used.