title: An Inexpensive and Programmable RF Transmitter Setup for Two-coil CASL.
abstract: An inexpensive and programmable RF transmitter for two-coil continuous arterial spin labeling (CASL) system is presented in this paper. While previous implementations of two-coil CASL require the expensive MR RF instruments, the present design utilizes a low-cost system on chip direct digital synthesizer and a mini-size communication RF power amplifier to generate the labeling RF waveform without sacrificing RF performance. Compared with a single RF channel two-coil CASL approach, this design requires minimal scanner hardware modifications. Moreover, this design offers a programmable interface for easy sequence setup and debugging. Performance and ease of use are validated experimentally.
authors.affiliation: The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology/Emory University, Atlanta, GA, United States.
authors.forename: Qin
authors.initials: Q
authors.lastname: Xu
authors.forename: Christopher
authors.initials: C
authors.lastname: Glielmi
authors.forename: Lei
authors.initials: L
authors.lastname: Zhou
authors.forename: Kisueng
authors.initials: K
authors.lastname: Choi
authors.forename: Xiaoping
authors.initials: X
authors.lastname: Hu