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Related Experiment Videos

Pelvic phased array coil: image quality assessment for spin-echo MR imaging.

T R McCauley1, S McCarthy, R Lange

  • 1Department of Diagnostic Radiology, Yale University School of Medicine, New Haven, CT 06510.

Magnetic Resonance Imaging
|January 1, 1992
PubMed
Summary

Pelvic phased array (PA) coils offer better signal-to-noise ratio (SNR) for MRI. While PA coils showed individual image quality improvements, consistent marked gains were not observed due to motion and signal uniformity issues.

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Area of Science:

  • Radiology
  • Medical Imaging
  • Magnetic Resonance Imaging

Background:

  • Conventional body coils in Magnetic Resonance Imaging (MRI) have limitations in achieving optimal signal-to-noise ratio (SNR).
  • Phased array (PA) coils are designed to enhance SNR by using multiple smaller receiver coils.
  • Pelvic MRI applications can benefit from improved image quality for diagnosis.

Purpose of the Study:

  • To evaluate and compare the image quality of pelvic MRI using a phased array (PA) coil versus the standard body coil.
  • To assess the impact of PA coil imaging on spin-echo sequences in pelvic MRI.
  • To identify factors influencing image quality differences between coil types.

Main Methods:

  • A comparative study involving 33 women undergoing pelvic MRI.

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  • Imaging was performed using both the body coil and a pelvic PA coil.
  • Two radiologists independently assessed image quality, considering different field-of-view (FOV) parameters.

    • Main Results:

    • Individual cases demonstrated significant improvements in image quality with the pelvic PA coil.
    • However, a consistently marked improvement in overall image quality was not observed across all patients.
    • Increased motion artifact and signal nonuniformity with distance from the coils were identified as limiting factors.

    Conclusions:

    • Pelvic phased array coils can improve pelvic MRI image quality in specific instances.
    • Further advancements in techniques to mitigate motion artifact are crucial for realizing the full potential of PA coils.
    • Optimizing PA coil usage may enhance diagnostic accuracy in pelvic MRI.