Abstract #0077

Improvement in T2-Weighted Imaging at 7T by Using KT-Points

Florent Eggenschwiler¹, Kieran O'Brien², Rolf Gruetter,¹³, Jos P. Marques⁴

¹EPFL, Laboratory for Functional and Metabolic Imaging, Lausanne, Vaud, Switzerland; ²University of Geneva, Department of Radiology, Geneva, Switzerland; ³Universities of Geneva and Lausanne, cole Polytechnique Fdrale de Lausanne, Lausanne, Vaud, Switzerland; ⁴University of Lausanne, Department of Radiology, Lausanne, Vaud, Switzerland

At high magnetic field strengths (B₀ > 3T), the inhomogeneous distribution of the B₁⁺ field causes undesirable signal and contrast variations of GM/WM across the brain. These artifacts impair the quality of T₂-weigthed images at high field and may mislead any medical diagnosis that depends on these images.