Abstract
In this study we present a method to simulate complex phased array coil designs for cardiac imaging. It is based on the combination of numerically calculatedB 1 field vectors for each coil of the array and a noise resistance data set, which is acquired only once with a set of test coils. This technique allowed fast assessment of the SNR performance of arbitrary geometries of single coils to be used as building blocks in complex array configurations. In addition, since clinical scanners usually provide only four receiver channels, we used this method to investigate the use of hardware combiners for different array configurations, consisting of up to eight coils. Simulated array geometries resulted in up to ≈30% gain in SNR for deep cardiac structures, compared to a conventional linear four coil array. This was confirmed by phantom experiments with implemented coils
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Bottomley PA, Lugo OC, Giaquinto R. What is the optimum phased array coil design for cardiac and torso magnetic resonance? Magn Reson Med 1997;37:591.
Constantinides CD, Atalar E, McVeigh ER. Signal-to-noise measurements in magnitude images from NMR phased arrays. Magn Reson Med 1997;38:852.
Constantinides CD, Westgate CR, O'Dell WG, Zerhouni EA, McVeigh ER. A phase array coil for human cardiac imaging. Magn Reson Med 1995;34:92.
Darrasse L, Kassab G. Quick measurement of nmr-coil sensivity with a dual-loop probe. Rev Sci Instrum 1993;64(7):1841.
Debbins JP, Felmlee JP, Riederer SJ. Phase alignment of multiple surface coil data for reduced bandwidth and reconstruction requirements. Magn Reson Med 1997;38:1003.
Edelstein WA, Foster TH, Schenck JF. The relative sensitivity of surface coils to deep lying tissues. Proceedings of the Fourth SMR Annual Meeting, 1985, p. 964.
Fayad ZA, Connick TJ, Axel L. An improved quadrature or phasedarray coil for MR cardiac imaging. Magn Reson Med 1995;34:186.
Hardy CJ, Bottomley PA, Rohling KW, Roemer PB. An NMR phased array for human cardiac 31P spectroscopy. Magn Reson Med 1992:8:54.
Hayes CE, Roemer PB. Noise correlations in data simultaneously acquired from multiple surface coil arrays. Magn Reson Med 1990;16:181.
Hoult DI, Richards RE. The signal-to-noise ratio of the nuclear magnetic resonance experiment. J Magn Res 1976;24:71.
Roemer PB, Edelstein WA, Hayes CE, Sonza SP, Mueller OM. The NMR phased array. Magn Reson Med 1990;16:192.
Sodickson DK, Manning WJ. Simultaneous acquisition of spatial harmonics (SMASH): fast imaging with radiofrequency coil arrays. Magn Reson Med 1997;38:591.
Weiger M, Pruessmann KP, Gosele R, Leussler C, Roschmann. Boesiger P. Specific coil design for SENSE: a six-element cardiac array (Abstract) Proceedings of the Seventh ISMRM Annual Meeting, 1999. p. 162.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Nittka, M., Haase, A. Investigation of complex phased array coil designs for cardiac imaging. MAGMA 10, 122–130 (2000). https://doi.org/10.1007/BF02601847
Received:
Revised:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02601847