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Compensation for surface coil sensitivity variation in magnetic resonance imaging.
P A Narayana1, W W Brey, M V Kulkarni
1Department of Radiology, University of Texas Medical School, Houston, 77030.
Magnetic Resonance Imaging
|May 1, 1988
Summary
This study introduces a new imaging technique to correct for surface coil sensitivity fall-off. The method enhances image homogeneity while maintaining surface coil sensitivity for clearer clinical imaging.
Area of Science:
- Medical Imaging
- Biomedical Engineering
- Signal Processing
Background:
- Surface coils in MRI offer high sensitivity but suffer from signal fall-off at the coil periphery.
- This non-uniformity can lead to image artifacts and reduced diagnostic accuracy.
- Existing compensation methods may compromise image quality or sensitivity.
Purpose of the Study:
- To develop and apply a novel procedure for compensating surface coil sensitivity fall-off in clinical imaging.
- To achieve image homogeneity comparable to body coils while retaining surface coil sensitivity.
Main Methods:
- A procedure combining correction matrix and digital filtering techniques was employed.
- Surface coil profile was determined using both surface coil and body coil images.
- The method was applied to clinical imaging data.
Main Results:
- The corrected surface coil images demonstrated significant improvement in homogeneity.
- Image homogeneity approached that of conventional body coil images.
- The high sensitivity characteristic of surface coils was effectively preserved.
Conclusions:
- The developed procedure successfully compensates for surface coil sensitivity fall-off.
- This technique offers a valuable tool for improving clinical MRI quality.
- It provides a balance between image homogeneity and superior surface coil sensitivity.