Multi-port-driven birdcage coil for multiple-mouse MR imaging at 7 T
- Authors
- Heo, Phil; Seo, Jeung-Hoon; Han, Sang-Doc; Ryu, Yeunchul; Byun, Jong-Deok; Kim, Kyoung-Nam; Lee, Jung Hee
- Issue Date
- Dec-2016
- Publisher
- WILEY-BLACKWELL
- Keywords
- multiple-mouse MRI; radiofrequency; multiple birdcage coil; 7-T imaging
- Citation
- SCANNING, v.38, no.6, pp.747 - 756
- Journal Title
- SCANNING
- Volume
- 38
- Number
- 6
- Start Page
- 747
- End Page
- 756
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/7632
- DOI
- 10.1002/sca.21324
- ISSN
- 0161-0457
- Abstract
- In ultra-high field (UHF) imaging environments, it has been demonstrated that multiple-mouse magnetic resonance imaging (MM-MRI) is dependent on key factors such as the radiofrequency (RF) coil hardware, imaging protocol, and experimental setup for obtaining high-resolution MR images. A key aspect is the RF coil, and a number of MM-MRI studies have investigated the application of single-channel RF transmit (Tx)/receive (Rx) coils or multi-channel phased array (PA) coil configurations under a single gradient coil set. However, despite applying a variety of RF coils, Tx (|B-1(+)|)-field inhomogeneity still remains a major problem due to the relative shortening of the effective RF wavelength in the UHF environment. To address this issue, we propose a relatively smaller size of individual Tx-only coils in a multiple birdcage (MBC) coil for MM-MRI to image up to three mice. We use electromagnetic (EM) simulations in the finite-difference time-domain (FDTD) environment to obtain the |B-1|-field distribution. Our results clearly show that the single birdcage (SBC) high-pass filter (HPF) configuration, which is referred to as the SBCHPF, under the absence of an RF shield exhibits a high |B-1|-field intensity in comparison with other coil configurations such as the low-pass filter (LPF) and band-pass filter (BPF) configurations. In a 7-T MRI experiment, the signal-to-noise ratio (SNR) map of the SBCHPF configuration shows the highest coil performance compared to other coil configurations. The MBCHPF coil, which is comprised of a triple-SBCHPF configuration combined with additional decoupling techniques, is developed for simultaneous image acquisition of three mice. SCANNING 38:747-756, 2016. (c) 2016 Wiley Periodicals, Inc.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - 보건과학대학 > 의용생체공학과 > 1. Journal Articles
- 보건과학대학 > 방사선학과 > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/7632)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.