Quadrature RF coil for in Vivo brain MRI of a macaque monkey in a stereotaxic head frame

Colin A. Roopnariane, Yeun chul Ryu, Mohammad reza Tofighi, Patti A. Miller, Sukhoon Oh, Jianli Wang, Bu Sik Park, Lukas Ansel, Christopher A. Lieu, Thyagarajan Subramanian, Qing X. Yang, Christopher M. Collins

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


We present a quadrature volume coil designed for brain imaging of a macaque monkey fixed in a sphinx position (facing down the bore) within a stereotactic frame at 3 T, where the position of the monkey and presence of the frame preclude use of existing coils. Requirements include the ability to position and remove the coil without disturbing the position of the monkey in the frame. A saddle coil and a solenoid were combined on a modified cylindrical former and connected in quadrature as to produce a homogeneous circularly polarized field throughout the brain. To allow the loops of the saddle coil to encompass the ear posts, partial disassembly and reassembly were facilitated by embedding pin and socket contacts into separate pieces of the former. Coil design included simulation of the electromagnetic fields for the coil containing a 3D model of a monkey's head. The resulting coil produced adequate homogeneity and signal-to-noise ratio throughout the brain.

Original languageEnglish (US)
Pages (from-to)22-27
Number of pages6
JournalConcepts in Magnetic Resonance Part B: Magnetic Resonance Engineering
Volume41 B
Issue number1
StatePublished - Feb 2012

All Science Journal Classification (ASJC) codes

  • Radiological and Ultrasound Technology
  • Radiology Nuclear Medicine and imaging
  • Spectroscopy
  • Physical and Theoretical Chemistry


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