A simulation study on the effect of optimized high permittivity materials on fetal imaging at 3T

• Published in: Magnetic resonance in medicine Vol. 82; no. 5; pp. 1822 - 1831
• Main Authors: Gemert, Jeroen, Brink, Wyger, Remis, Rob, Webb, Andrew
• Format: Journal Article
• Language: English
• Published: United States Wiley Subscription Services, Inc 01.11.2019; John Wiley and Sons Inc
• Subjects: Amniotic fluid; Brain; Brain - diagnostic imaging; Computer Simulation; design tool; dielectric pad; Dielectrics; Efficiency; Equipment Design; Female; fetal imaging; fetal MRI; Fetus - diagnostic imaging; Fetuses; Full Papers—Preclinical and Clinical Imaging; Gestation; high‐permittivity; Homogeneity; Humans; Image Enhancement - instrumentation; Magnetic resonance imaging; Magnetic Resonance Imaging - instrumentation; Magnetic Resonance Imaging - methods; Medical imaging; Models, Anatomic; Neuroimaging; passive shimming; Permittivity; Pregnancy; Radio frequency; passive shimming; fetal MRI; fetal imaging; design tool; high-permittivity; dielectric pad

Purpose One of the main concerns in fetal MRI is the radiofrequency power that is absorbed both by the mother and the fetus. Passive shimming using high permittivity materials in the form of “dielectric pads” has previously been shown to increase the B1+ efficiency and homogeneity in different appli...