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- Title
Custom-fitted 16-channel bilateral breast coil for bidirectional parallel imaging.
- Authors
Nnewihe, Anderson N.; Grafendorfer, Thomas; Daniel, Bruce L.; Calderon, Paul; Alley, Marcus T.; Robb, Fraser; Hargreaves, Brian A.
- Abstract
A 16-channel receive-only, closely fitted array coil is described and tested in vivo for bilateral breast imaging at 3 T. The primary purpose of this coil is to provide high signal-to-noise ratio and parallel imaging acceleration in two directions for breast MRI. Circular coil elements (7.5-cm diameter) were placed on a closed 'cup-shaped' platform, and nearest neighbor coils were decoupled through geometric overlap. Comparisons were made between the 16-channel custom coil and a commercially available 8-channel coil. SENSitivity Encoding (SENSE) parallel imaging noise amplification ( g-factor) was evaluated in phantom scans. In healthy volunteers, we compared signal-to-noise ratio, parallel imaging in one and two directions, Autocalibrating Reconstruction for Cartesian sampling (ARC) g-factor, and high spatial resolution imaging. When compared with a commercially available 8-channel coil, the 16-channel custom coil shows 3.6× higher mean signal-to-noise ratio in the breast and higher quality accelerated images. In patients, the 16-channel custom coil has facilitated high-quality, high-resolution images with bidirectional acceleration of R = 6.3. Magn Reson Med, 2011. © 2011 Wiley-Liss, Inc.
- Publication
Magnetic Resonance in Medicine, 2011, Vol 66, Issue 1, p281
- ISSN
0740-3194
- Publication type
Article
- DOI
10.1002/mrm.22771