A5083419787- Advanced MRI Techniques and Applications
- Atomic and Subatomic Physics Research
- Advanced NMR Techniques and Applications
- Wireless Power Transfer Systems
- Wireless Body Area Networks
- Nuclear Physics and Applications
- VLSI and Analog Circuit Testing
- Radio Frequency Integrated Circuit Design
Applied Science Private University
2020-2025
ABSTRACT Magnetic resonance spectroscopy (MRS) provides a non‐invasive method for examining metabolic alterations associated with diseases. While 1 H‐based MRS is commonly employed, its effectiveness often limited by signal interference from water, reducing the accuracy of metabolite differentiation. In contrast, X‐nuclei leverages broader chemical shift dispersion non‐hydrogen nuclei to enhance ability distinguish between metabolites. This article presents design and analysis dual‐resonant...
Abstract This article introduces two new designs of transmit/receive switches for 7‐Tesla magnetic resonance imaging. Both based on a microstripline coupler technology. In the first design, different single frequency signals can be handled to/from radio coil using smart tuning network. second dual‐tuned 1H/23Na switch is designed to handle dual resonant signal coil, simultaneously and without tuning. transmit receive, design achieved good matching (‐20 dB), low insertion loss (0.78 dB) 1H,...
This article introduces two designs for dual-tuned built-in radio-frequency coil current sensing in 7-Tesla magnetic resonance imaging based on the forcing property of quarter-wave transmission line. The first design offers at <sup>1</sup>H/<sup>23</sup>Na resonant frequencies to probe consecutively 298 MHz and 78.8 MHz, without need any integrated sensor coil. second enables <sup>1</sup>H/<sup>31</sup>P 120 consecutively. achieved good...
In this work, two designs of Transmit/Receive (T/R) switches are introduced for 7-Tesla magnetic resonance imaging. The T-shaped and the cascaded Pi-shaped microstripline-based T/R 1H MRI designed with minimum trace width constraint that handles required power assures a compact size switch. When peak Radio Frequency (RF) amplifier signal is 1 kW 10% duty cycle, average current will pass through 50 Ω input impedance circuit 2 A. Based on IPC 2221 standard PCB traces, such 0.513 mm. ADS...
This work presents and evaluates the integrating of decoupling networks in MRI systems at 7 Tesla magnetic field strength. The parasitic element is reactive loaded. Four different cases loads are considered: capacitive load, inductive open circuited, short-circuited considered. idea behind this technique to reduce or even eliminate effect mutual coupling between RF coil elements resonance imaging (MRI)system. Two rectangular loops used compose a planar phased array. structure designed...