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A Dedicated 36-Channel Receive Array for Fetal MRI at 3T
IEEE Transactions on Medical Imaging
|July 12, 2018
Summary
A new 36-channel fetal coil array designed for 3T MRI offers significant signal-to-noise ratio (SNR) improvements for fetal imaging. This dedicated coil enhances imaging performance across various pregnancy stages, outperforming standard abdominal coils.
Area of Science:
- Magnetic Resonance Imaging (MRI)
- Medical Device Engineering
- Radiology
Background:
- Standard abdominal coils used for fetal MRI have limitations in coverage, element number, and signal-to-noise ratio (SNR).
- Dedicated fetal imaging coils are lacking, necessitating the use of suboptimal commercial arrays.
Purpose of the Study:
- To design and evaluate a dedicated 36-channel coil array optimized for fetal MRI at 3 Tesla (3T).
- To assess the performance improvements of the new coil array compared to a commercial abdominal coil.
Main Methods:
- A 36-channel coil array was designed to accommodate fetal body sizes from 20 to 37+ weeks of gestation.
- Quantitative evaluation of SNR and G-factor (parallel imaging noise amplification) was performed using phantom studies at 3T.
Main Results:
- The 36-channel fetal array demonstrated SNR improvements of 10% for the whole fetal body region and up to 40% in edge regions (fetal brain/heart).
- The proposed array offers augmented parallel imaging capabilities with notable SNR gains at high acceleration factors.
Conclusions:
- The dedicated 36-channel fetal coil array significantly enhances fetal MRI performance at 3T.
- This specialized coil array provides superior SNR and parallel imaging capabilities compared to commercial abdominal coils, improving diagnostic quality.
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