Abstract #2164

Analytical theory, circuit and numerical simulations to design a splittable degenerate birdcage for MSK applications.

Riccardo Stara^1,2,3, Fabio Morsani², Gianluigi Tiberi^4,5, Maria Evelina Fantacci^2,3, Massimo Marletta⁶, Virna Zampa⁶, Brian Rutt¹, Alessandra Retico², and Michela Tosetti⁵

¹Stanford University, Stanford, CA, United States, ²Istituto Nazionale di Fisica Nucleare (Pisa), Pisa, Italy, ³Dipartimento di Fisica, Universita' di Pisa, Pisa, Italy, ⁴IMAGO7, Pisa, Italy, ⁵IRCCS Stella maris, Calambrone (Pisa), Italy, ⁶Dipartimento di radiologia diagnostica ed interventistica AOU, Pisa, Italy

The degenerate birdcage is not a common design for ultra-high field transmit array due to the technical difficulties in its construction, such as the interdependence of tuning and degeneracy on the value of capacitors. We present here a combination of an analytical theory, circuit simulations and numerical simulations to be used for an efficient design and construction of the degenerate birdcage at 7T. We demonstrate satisfactory performance in terms of decoupling, B₁⁺ homogeneity and B₁⁺ efficiency on the workbench and with scanner measurements on phantoms and human volunteers.

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