title: Comparison of analog and digital transceiver systems for MR imaging.
abstract: We critically evaluated analog and digital transceivers for magnetic resonance (MR) imaging systems under identical experimental conditions to identify and compare their advantages and disadvantages. MR imaging experiments were performed using a 4.74-tesla vertical-bore superconducting magnet and a high sensitivity gradient coil probe. We acquired 3-dimensional spin echo images of a kumquat with and without using a gain-stepping scan technique to extend the dynamic range of the receiver systems. The acquired MR images clearly demonstrated nearly identical image quality for both transceiver systems, but DC and ghosting artifacts were obtained for the analog transceiver system. We therefore concluded that digital transceivers have several advantages over the analog transceivers.
authors.affiliation: Institute of Applied Physics, University of Tsukuba.
authors.forename: Seitaro
authors.initials: S
authors.lastname: Hashimoto
authors.forename: Katsumi
authors.initials: K
authors.lastname: Kose
authors.forename: Tomoyuki
authors.initials: T
authors.lastname: Haishi
mesh_terms: D011211:Electric Power Supplies; D004867:Equipment Design; D021621:Imaging, Three-Dimensional; D008279:Magnetic Resonance Imaging / Q000295:instrumentation*; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*