Custom‐fitted 16‐channel bilateral breast coil for bidirectional parallel imaging
Open Access
- 1 February 2011
- journal article
- research article
- Published by Wiley in Magnetic Resonance in Medicine
- Vol. 66 (1), 281-289
- https://doi.org/10.1002/mrm.22771
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.Keywords
Funding Information
- The Lucas foundation, General Electric Healthcare
- National Institutes of Health (P41RR009784, R01-EB009055)
This publication has 26 references indexed in Scilit:
- Evaluation of multicoil breast arrays for parallel imagingJournal of Magnetic Resonance Imaging, 2010
- Comprehensive quantification of signal‐to‐noise ratio and g‐factor for image‐based and k‐space‐based parallel imaging reconstructionsMagnetic Resonance in Medicine, 2008
- A 128‐channel receive‐only cardiac coil for highly accelerated cardiac MRI at 3 TeslaMagnetic Resonance in Medicine, 2008
- Highly accelerated imaging of cardiac function using a 32 channel cardiac phased array at 3 TRöFo - Fortschritte auf dem Gebiet der Röntgenstrahlen und der bildgebenden Verfahren, 2007
- Diagnostic accuracy of high-resolution MRI using a microscopy coil for patients with presumed DCIS following mammography screeningJournal of Magnetic Resonance Imaging, 2006
- Parallel imaging in cardiovascular MRI: methods and applicationsNMR in Biomedicine, 2006
- Cardiac CINE MR imaging with a 32‐channel cardiac coil and parallel imaging: Impact of acceleration factors on image quality and volumetric accuracyJournal of Magnetic Resonance Imaging, 2005
- Image reconstruction in SNR units: A general method for SNR measurement†Magnetic Resonance in Medicine, 2005
- Generalized autocalibrating partially parallel acquisitions (GRAPPA)Magnetic Resonance in Medicine, 2002
- SENSE: Sensitivity encoding for fast MRIMagnetic Resonance in Medicine, 1999