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MR imaging of the pelvis with an endorectal-external multicoil array
M D Schnall1, T Connick, C E Hayes
1Department of Radiology, Hospital of the University of Pennsylvania, Philadelphia 19104.
Journal of Magnetic Resonance Imaging : JMRI
|March 1, 1992
Summary
Combining an endorectal coil with an anterior coil array significantly improves pelvic magnetic resonance (MR) imaging. This multicoil approach enhances signal-to-noise ratio and spatial coverage for better clinical applications.
Area of Science:
- Medical Imaging
- Radiology
- Biophysics
Background:
- Endorectal coil magnetic resonance (MR) imaging offers high resolution for pelvic studies.
- However, endorectal coils have limited spatial coverage.
- External anterior coils can augment sensitivity and coverage.
Purpose of the Study:
- To evaluate the effectiveness of combining an endorectal coil with an anterior coil array for pelvic MR imaging.
- To assess the impact on signal-to-noise ratio (S/N) and spatial coverage.
- To determine the optimal anterior coil configuration for clinical applications.
Main Methods:
- Investigated a multicoil array using an endorectal coil and either a 5-inch (12.7-cm) surface coil or a two-coil anterior array.
- Each coil was connected to a separate receiver for image combination.
- Analyzed signal-to-noise ratio (S/N) improvements at varying distances from the endorectal coil.
Main Results:
- The combined multicoil array improved S/N compared to the endorectal coil alone beyond 3 cm.
- The anterior two-coil array offered enhanced lateral coverage.
- The technique demonstrated improved spatial coverage for pelvic MR imaging.
Conclusions:
- Multicoil arrays, particularly with a two-coil anterior array, enhance pelvic MR imaging capabilities.
- This method improves both signal-to-noise ratio and spatial coverage.
- Expanded coverage broadens the clinical utility of endorectal MR imaging.