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Related Concept Videos

Gradient and Del Operator01:14

Gradient and Del Operator

In mathematics and physics, the gradient and del operator are fundamental concepts used to describe the behavior of functions and fields in space. The gradient is a mathematical operator that gives both the magnitude and direction of the maximum spatial rate of change. Consider a person standing on a mountain. The slope of the mountain at any given point is not defined unless it is quantified in a particular direction. For this reason, a "directional derivative" is defined, which is a vector...

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Tracking the Mammary Architectural Features and Detecting Breast Cancer with Magnetic Resonance Diffusion Tensor Imaging
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[Design of high performance DSP-based gradient calculation module for MRI].

Wenyu Pan1, Fu Zhang, Hai Luo

  • 1Department of Automation, University of Science and Technology of China, Hefei 230027. panly@mail.ustc.edu.cn

Zhongguo Yi Liao Qi Xie Za Zhi = Chinese Journal of Medical Instrumentation
|September 30, 2011
PubMed
Summary
This summary is machine-generated.

A new digital Magnetic Resonance Imaging (MRI) spectrometer module uses a high-performance Digital Signal Processor (DSP) for gradient calculations. This versatile solution meets MRI system speed and accuracy needs.

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Co-analysis of Brain Structure and Function using fMRI and Diffusion-weighted Imaging
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Area of Science:

  • Digital Signal Processing (DSP)
  • Magnetic Resonance Imaging (MRI)

Context:

  • Digital MRI spectrometers require efficient gradient calculation.
  • Existing solutions may lack versatility or performance.

Purpose:

  • To design a gradient calculation module for digital MRI spectrometers.
  • To integrate multiple gradient functions onto a single DSP chip.

Summary:

  • A high-performance DSP-based module was developed for MRI gradient calculations.
  • It performs rotation transformation, pre-emphasis, and shimming.
  • Outputs include gradient waveform data (X, Y, Z channels) and B0 shimming data.

Impact:

  • The module offers good versatility, speed, and accuracy for MRI gradient calculation.
  • Provides a practical solution for digital spectrometer development.