Nonlinear amplitude compression in magnetic resonance imaging: quantization noise reduction and data memory saving

Dynamic range improvement in magnetic resonance imaging (MRI) by nonlinear amplitude compression is proposed. Quantization noise reduction by a factor of 10 to 20 is confirmed by a numerical simulation, provided an appropriate nonlinear transform is chosen. The piecewise-linear transform is the best...

Full description

Saved in:
Bibliographic Details
Published in:IEEE aerospace and electronic systems magazine 1990-06, Vol.5 (6), p.27-30
Main Authors: Kose, K., Endoh, K., Inouye, T.
Format: Magazinearticle
Language:English
Subjects:
Attenuators
Dynamic range
Frequency
Hardware
Magnetic resonance
Magnetic resonance imaging
Noise reduction
Numerical simulation
Piecewise linear techniques
Quantization
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Dynamic range improvement in magnetic resonance imaging (MRI) by nonlinear amplitude compression is proposed. Quantization noise reduction by a factor of 10 to 20 is confirmed by a numerical simulation, provided an appropriate nonlinear transform is chosen. The piecewise-linear transform is the best nonlinear transform studied so far. Implementing amplitude compression requires no additional hardware in a usual MRI system if the low spatial frequency lines of the magnetic resonance (MR) signal are selectively prescanned through an attenuator. The method will be particularly effective in 3-D imaging of large objects. MR angiography, and imaging of solids.< >
ISSN:0885-8985
1557-959X
DOI:10.1109/62.54645