NDLI: A numerical study of the field dependence of signal-to-noise ratio in high-field MRI

Content Provider	IEEE Xplore Digital Library
Author	Kowalski, M.E. Jin, J.-M.
Copyright Year	2001
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Illinois Univ., Urbana, IL, USA (Kowalski, M.E.)
Abstract	The increasing interest in the use of magnetic resonance imaging (MRI) for quantitative spectroscopy, real-time imaging, magnetic resonance angiography (MRA), and other emerging applications has led to increased effort towards maximizing the available signal-to-noise ratio (SNR). For a designer to be able to maximize the available SNR, an accurate analysis method is required. However, many of the trends in hardware design intended to increase SNR (such as the move towards higher B/sub 0/ field strengths) make the analysis of SNR more complicated. The intrinsic SNR (ISNR) is a quantity which represents a fundamental limit of the performance of an MR system for a given patient/coil configuration. We use the finite-difference time-domain (FDTD) method to study the SNR of MRI at frequencies up to 340 MHz (corresponding to the Larmour frequency of protons in an 8 T B/sub 0/ field). The principle of reciprocity together with the FDTD analysis is used to provide a means of computing the intensity of the NMR signal from all points in the sample. The FDTD can accommodate an inhomogeneous model of the patient being imaged, which more accurately describes the physical situation than previous approaches. This technique is used to assess the field-dependence of the ISNR in high-field MRI.
Starting Page	366
Ending Page	369
File Size	173058
Page Count	4
File Format	PDF
ISBN	0780370708
DOI	10.1109/APS.2001.958868
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-07-08
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Signal to noise ratio Magnetic resonance imaging Finite difference methods Time domain analysis Frequency Spectroscopy Magnetic resonance Angiography Magnetic analysis Hardware
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Using electromagnetic field calculations to understand the complexity of magnetic resonance imaging (MRI) at high magnetic field strength

GPU-Accelerated FDTD Modeling of Radio-Frequency Field–Tissue Interactions in High-Field MRI

Numerical optimization of intra-operative RF coil for open vertical-field MRgFUS using hybrid MoM/FDTD method

High signal to noise ratio in low field NMR on chip, simulations and experimental results

Increasing the Signal-to-Noise Ratio by Using Vertically Stacked Phased Array Coils for Low-Field Magnetic Resonance Imaging

A novel eigenvector-based technique for spectral estimation of time-domain data in medical imaging

FDTD modeling of isotropic dispersive magnetic materials

An improved cylindrical FDTD method and its application to field-tissue interaction study in MRI

Determination of surface currents by backpropagation of field measurements

A numerical study of the field dependence of signal-to-noise ratio in high-field MRI

Similar Documents

Using electromagnetic field calculations to understand the complexity of magnetic resonance imaging (MRI) at high magnetic field strength

GPU-Accelerated FDTD Modeling of Radio-Frequency Field–Tissue Interactions in High-Field MRI

Numerical optimization of intra-operative RF coil for open vertical-field MRgFUS using hybrid MoM/FDTD method

High signal to noise ratio in low field NMR on chip, simulations and experimental results

Increasing the Signal-to-Noise Ratio by Using Vertically Stacked Phased Array Coils for Low-Field Magnetic Resonance Imaging

A novel eigenvector-based technique for spectral estimation of time-domain data in medical imaging

FDTD modeling of isotropic dispersive magnetic materials

An improved cylindrical FDTD method and its application to field-tissue interaction study in MRI

Determination of surface currents by backpropagation of field measurements

A numerical study of the field dependence of signal-to-noise ratio in high-field MRI