Simulation Study of Radio Frequency Safety and the Optimal Size of a Single-Channel Surface Radio Frequency Coil for Mice at 9.4 T Magnetic Resonance Imaging
- Authors
- Seo, Jeung-Hoon; Ryu, Yeunchul; Chung, Jun-Young
- Issue Date
- Jun-2022
- Publisher
- MDPI
- Keywords
- radiofrequency coil; finite-difference time-domain; preclinical magnetic resonance imaging; 9; 4 T magnetic resonance imaging system; specific absorption rate; radiofrequency safety; ultra-high field magnetic resonance imaging
- Citation
- Sensors, v.22, no.11
- Journal Title
- Sensors
- Volume
- 22
- Number
- 11
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/84744
- DOI
- 10.3390/s22114274
- ISSN
- 1424-8220
- Abstract
- The optimized size of a single-channel surface radio frequency (RF) coil for mouse body images in a 9.4 T magnetic resonance imaging (MRI) system was determined via electromagnetic-field analysis of the signal depth according to the size of a single-channel coil. The single-channel surface RF coils used in electromagnetic field simulations were configured to operate in transmission/reception mode at a frequency of 9.4 T–400 MHz. Computational analysis using the finite-difference time-domain method was used to assess the single-channel surface RF coil by comparing single-channel surface RF coils of varying sizes in terms of |B1|-, |B1+|-, |B1−|- and |E|-field distribution. RF safety for the prevention of burn injuries to small animals was assessed using an analysis of the specific absorption rate. A single-channel surface RF coil with a 20 mm diameter provided optimal B1-field distribution and RF safety, thus confirming that single-channel surface RF coils with ≥25 mm diameter could not provide typical B1-field distribution. A single-channel surface RF coil with a 20 mm diameter for mouse body imaging at 9.4 T MRI was recommended to preserve the characteristics of single-channel surface RF coils, and ensured that RF signals were applied correctly to the target point within RF safety guidelines.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - 의과대학 > 의예과 > 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/84744)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.