A Millimeter-Wave Digital Link for Wireless MRI

作者：Aggarwal Kamal^*; Joshi Kiran R; Rajavi Yashar; Taghivand Mazhareddin; Pauly John M; Poon Ada S Y; Scott Greig

来源：IEEE Transactions on Medical Imaging, 2017, 36(2): 574-583.

DOI：10.1109/TMI.2016.2622251

• Close range
• dipole antenna
• horn antenna
• imaging
• impulse radio
• IR-UWB
• low power
• mm-wave
• MRI
• OOK
• optical transceiver
• 60 GHz
• wireless MRI

A millimeter (mm) wave radio is presented in this work to support wireless MRI data transmission. High path loss and availability of wide bandwidth make mm-waves an ideal candidate for short range, high data rata communication required for wireless MRI. The proposed system uses a custom designed integrated chip (IC) mm-wave radio with 60 GHz as radio frequency carrier. In this work, we assess performance in a 1.5 T MRI field, with the addition of optical links between the console room and magnet. The system uses ON-OFF keying (OOK) modulation for data transmission and supports data rates from 200 Mb/s to 2.5 Gb/s for distances up-to 65 cm. The presence of highly directional, linearly polarized, on-chip dipole antennas on the mm-wave radio along with the time division multiplexing (TDM) circuitry allows multiple wireless links to be created simultaneously with minimal inter-channel interference. This leads to a highly scalable solution for wireless MRI.

• 出版日期2017-2