Why the study?
Does cardiac imaging at 4 Tesla using a tailored coil improve signal-to-noise ratio compared to 1.5 Tesla?
Does cardiac imaging at 4 Tesla using a tailored coil improve signal-to-noise ratio compared to 1.5 Tesla?
Cardiac imaging at 4 Tesla using a tailored coil provides a 2.5-fold increase in SNR compared to 1.5 Tesla, which can be used to improve resolution or reduce scan time.
May enable higher-resolution or faster cardiac MRI; leaves open diagnostic utility versus 1.5 T.
Although higher magnetic field strength is a means to increase SNR in MRI, cardiac imaging has been difficult at high fields due to decreased RF penetration. Using a tailored cardiac coil constructed of two transmit surface coils with a four-element multicoil for signal reception, the authors demonstrate high-quality heart images acquired on a 4-T scanner. These images show an increase in SNR of approximately 2.5-fold over imaging at 1.5 T. This improvement in image quality can be used to increase in-plane resolution, reduce slice thickness, or reduce total scan time. Magn Reson Med 45:176-178, 2001.
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Dougherty et al. (2001) studied this question.
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