Free-Breathing 3D T1-Weighted Gradient-Echo Sequence With Radial Data Sampling in Abdominal MRI: Preliminary Observations

• DOI: 10.2214/ajr.10.5881
• Publication Date: 2011-08-23T23:53:41Z
• Authors: Rafael M. Azevedo; Rafael O. P. de C...; Miguel Ramalho; Vasco Herédia; Brian M. Dale; Richard C. Semelka
• Keywords: Artifact (error); Gradient echo; Sequence (biology); Fast spin echo

The purposes of this study were to evaluate the feasibility a free-breathing 3D gradient-recalled echo sequence with radial data sampling (radial GRE) in abdominal MRI compared standard GRE volumetric interpolated breath-hold examination (VIBE) for imaging cooperative patients and perform preliminary assessment noncooperative patients.Fifty-five consecutively registered who underwent unenhanced contrast-enhanced technique constituted population. Two readers independently blindly evaluated images.Overall image quality was lower than but rated at least nearly as good that VIBE (p < 0.0001). Higher scores recorded images respect pixel graininess, streaking artifact, sharpness = 0.0009 p Except vessels on images, results did not differ significantly comparison 0.004). For patients, children had higher ratings shading (unenhanced, 0.0004; contrast-enhanced, 0.0001) artifacts 0.0017) those adults. Overall pediatric patients. In lesion analysis, use associated greater detectability, confidence, conspicuity 0.00026-0.011).A is feasible may find application are unable suspend respiration, especially children.