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We have mitigated acoustic noise in a 1.5 T cylindrical MRI scanner equipped with epoxy-potted, shielded gradients. It has been widely assumed that MRI acoustic noise comes overwhelmingly from vibrations of the gradient assembly. However, with vibration-isolated gradients contained in an airtight enclosure, we found the primary sources of acoustic noise to(More)
Introduction Acoustic noise in MRI scanners has long been a concern for patient comfort and, on occasion, for patient safety [1,2]. Acoustic noise interferes with communication between MRI physicians and operators. Acoustic noise also provides an unwanted stimulus and interference during fMRI studies. We have studied acoustic noise in a 1.5 T cylindrical(More)
Numerous small reflector antennas, with cost-effective electronics, feed information into this telescope, designed to search for extraterrestrial intelligence and produce images covering wide areas of the sky. ABSTRACT | The first 42 elements of the Allen Telescope Array (ATA-42) are beginning to deliver data at the Hat Creek Radio Observatory in northern(More)
We have mitigated acoustic noise in a 1.5 T cylindrical MRI scanner equipped with epoxy-potted, shielded gradients. It has been widely assumed that MRI acoustic noise comes overwhelmingly from vibrations of the gradient assembly. However, with vibration-isolated gradients contained in an airtight enclosure, we found the primary sources of acoustic noise to(More)
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