Theoretical signal-to-noise ratio of a slotted surface coil for magnetic resonance imaging

  title={Theoretical signal-to-noise ratio of a slotted surface coil for magnetic resonance imaging},
  author={Koryna Itz{\'e} Contreras Ocegueda and S. S. Hidalgo and Sergio Solis and A. O. Rodriguez},
  journal={arXiv: Medical Physics},
The analytical expression for the signal-to-noise ratio of a slotted surface coil with an arbitrary number of slots was derived using the quasi-static approach. This surface coil based on the vane-type magnetron tube. To study the coil perfomance, the theoretical signal-to-noise ratio predictions of this coil design were computed using a different number of slots. Results were also compared with theoretical results obtained for a circular coil with similar dimensions. It can be appreciated that… 

Figures from this paper

Surface coil with reduced specific absorption rate for rat MRI at 7 T
The slotted surface coil offers improved performance and low SAR100 mg for rat brain imaging at 7 T and may be used with new RF coils to investigate SAR in humans.
Probe-Specific Procedure to Estimate Sensitivity and Detection Limits for 19F Magnetic Resonance Imaging
A simple method for the calibration of MRI hardware, providing sensitivity estimates for a given scanner and Coil configuration and an experimental “calibration factor” to account for variations in coil configuration and hardware set-up is proposed.
A MRI compatible optical system and its respiration adaptive estimation method for hemoglobin concentration in mice brain
We propose a design of a integrated system of optic fibers and a superconducting surface coil. A MRI compatible support fixed the optic fiber and the coil, and the optic fibers installed through the


A multi-slot surface coil for MRI of dual-rat imaging at 4 T
The slotted surface coil can be a good tool for MRI experiments in rats on a human whole-body 4 T scanner and has a deeper RF-sensitivity and better field uniformity than the single-loop RF-coil.
Calculation of the signal-to-noise ratio for simple surface coils and arrays of coils [magnetic resonance imaging]
A derivation of the ultimate gain in SNR for arrays of surface coils is presented, showing that the SNR of such an array approaches a limit even if the total number of coils is increased to infinity.
The signal-to-noise ratio of nuclear magnetic resonance surface coils and application to a lossy dielectric cylinder model. I. Theory
Surface coils are used in magnetic resonance imaging (MRI) for their high signal-to-noise ratio (S/N) when placed near the-region to be imaged. However, their optimization for high field MRI systems
The signal-to-noise ratio of nuclear magnetic resonance surface coils and application to a lossy dielectric cylinder model. II. The case of cylindrical window coils
For pt. I see ibid., vol. 42, no. 5, p. 497-506 (1995). In pt. I the authors developed complete expressions for the power dissipated by and for the signal-to-noise ratio (S/N) of a coil of arbitrary
Ultimate signal-to-noise-ratio of surface and body antennas for magnetic resonance imaging
Approximating the human body by a homogeneous half-space or cylinder the electromagnetic fields of surface antennas or wholebody antennas for magnetic resonance imaging (MRI) can analytically be
A Simple Method to Calculate the Signal-to- Noise Ratio of a Circular- Shaped Coil for MRI
The introduction of the ultrafast imaging sequences has renewed the interest in development of RF coils. The theoretical frame of the SNR of MRI coils is a challenge because it requires a deep
Ultimate intrinsic signal‐to‐noise ratio in MRI
It was found that the ultimate intrinsic SNR increases better than linearly with the main magnetic field up to 10 T for the model used, and it was observed that for field strengths of 4 T or higher, focusing is required to reach the ultimate intrinsically SNR.
Ultimate intrinsic signal‐to‐noise ratio for parallel MRI: Electromagnetic field considerations
The dependence of the ultimate intrinsic SNR on a variety of experimental conditions is explored and a physically intuitive explanation for the observed behavior is provided based on a comparison between the electromagnetic wavelength and the distance between aliasing points.
Electromagnetic perspective on the operation of RF coils at 1.5–11.7 Tesla
It was demonstrated mathematically, numerically, and experimentally that highly asymmetric inhomogeneous images can be acquired even for linear excitation, symmetrical load geometries, and asymmetrical load positioning within the coil.
Electrodynamics and ultimate SNR in parallel MR imaging
It is concluded that parallel techniques hold particular promise for human MR imaging at very high field because the transition from optimal to deteriorating performance depends on the electrodynamic characteristics of the detected RF fields.