Automatic Resonance Frequency Retuning of Stretchable Liquid Metal Receive Coil for Magnetic Resonance Imaging
Stretchable magnetic resonance (MR) receive coils show shifts in their resonance frequency when stretched. An in-field receiver measures the frequency response of a stretchable coil. The receiver and coil are designed to operate at 128 MHz for a 3T MR scanner. Based on the measured frequency respons...
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| Veröffentlicht in: | IEEE transactions on medical imaging 2019-06, Vol.38 (6), p.1420-1426 |
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| container_title | IEEE transactions on medical imaging |
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| creator | Mehmann, Andreas Vogt, Christian Varga, Matija Port, Andreas Reber, Jonas Marjanovic, Josip Pruessmann, Klaas Paul Sporrer, Benjamin Huang, Qiuting Troster, Gerhard |
| description | Stretchable magnetic resonance (MR) receive coils show shifts in their resonance frequency when stretched. An in-field receiver measures the frequency response of a stretchable coil. The receiver and coil are designed to operate at 128 MHz for a 3T MR scanner. Based on the measured frequency response, we are able to detect the changes of the resonance frequency of the coil. We show a proportional-integral-derivative controller that tracks the changes in resonance frequency and retunes the stretchable coil. The settling time of the control loop is less than 3.8ms. The retuning system reduces the loss in signal-to-noise ratio of phantom images from 1.6 dB to 0.3 dB, when the coil is stretched by 40% and the coil is retuned to 128 MHz. |
| doi_str_mv | 10.1109/TMI.2018.2888959 |
| format | Article |
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An in-field receiver measures the frequency response of a stretchable coil. The receiver and coil are designed to operate at 128 MHz for a 3T MR scanner. Based on the measured frequency response, we are able to detect the changes of the resonance frequency of the coil. We show a proportional-integral-derivative controller that tracks the changes in resonance frequency and retunes the stretchable coil. The settling time of the control loop is less than 3.8ms. The retuning system reduces the loss in signal-to-noise ratio of phantom images from 1.6 dB to 0.3 dB, when the coil is stretched by 40% and the coil is retuned to 128 MHz.</description><identifier>ISSN: 0278-0062</identifier><identifier>EISSN: 1558-254X</identifier><identifier>DOI: 10.1109/TMI.2018.2888959</identifier><identifier>PMID: 30582533</identifier><identifier>CODEN: ITMID4</identifier><language>eng</language><publisher>United States: IEEE</publisher><subject>Change detection ; Equipment Design ; Female ; Frequency dependence ; Frequency measurement ; Frequency response ; Humans ; Liquid metal coil ; Liquid metals ; Magnetic resonance imaging ; Magnetic Resonance Imaging - instrumentation ; Magnetic Resonance Imaging - methods ; Male ; Metals - chemistry ; Neoprene ; Noise levels ; Phantoms, Imaging ; Proportional integral derivative ; radio frequency (RF) receive coil ; Receivers ; Resonance ; resonance frequency retuning ; Resonant frequency ; Signal to noise ratio ; Strain ; stretchable ; Voltage measurement</subject><ispartof>IEEE transactions on medical imaging, 2019-06, Vol.38 (6), p.1420-1426</ispartof><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. 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An in-field receiver measures the frequency response of a stretchable coil. The receiver and coil are designed to operate at 128 MHz for a 3T MR scanner. Based on the measured frequency response, we are able to detect the changes of the resonance frequency of the coil. We show a proportional-integral-derivative controller that tracks the changes in resonance frequency and retunes the stretchable coil. The settling time of the control loop is less than 3.8ms. The retuning system reduces the loss in signal-to-noise ratio of phantom images from 1.6 dB to 0.3 dB, when the coil is stretched by 40% and the coil is retuned to 128 MHz.</description><subject>Change detection</subject><subject>Equipment Design</subject><subject>Female</subject><subject>Frequency dependence</subject><subject>Frequency measurement</subject><subject>Frequency response</subject><subject>Humans</subject><subject>Liquid metal coil</subject><subject>Liquid metals</subject><subject>Magnetic resonance imaging</subject><subject>Magnetic Resonance Imaging - instrumentation</subject><subject>Magnetic Resonance Imaging - methods</subject><subject>Male</subject><subject>Metals - chemistry</subject><subject>Neoprene</subject><subject>Noise levels</subject><subject>Phantoms, Imaging</subject><subject>Proportional integral derivative</subject><subject>radio frequency (RF) receive coil</subject><subject>Receivers</subject><subject>Resonance</subject><subject>resonance frequency retuning</subject><subject>Resonant frequency</subject><subject>Signal to noise ratio</subject><subject>Strain</subject><subject>stretchable</subject><subject>Voltage measurement</subject><issn>0278-0062</issn><issn>1558-254X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><sourceid>EIF</sourceid><recordid>eNpdkc1rGzEQxUVIaNyk90AhCHLpZR2tviwdg0lag00gSaE3odXOugq7UiLtFvLfR8ZuoD0NmvnNY_QeQhc1mdc10ddPm9WcklrNqVJKC32EZrUQqqKC_zpGM0IXqiJE0lP0OednQmouiP6EThkRigrGZijcTGMc7OgdfoAcgw0O8F2C1wmCeyu9cQo-bHHs8OOYYHS_bdMDXvvXybd4A6PtC-TA_wG8jL7HXUx4Y7cB_pVcDXZbdM7RSWf7DF8O9Qz9vLt9Wv6o1vffV8ubdeUYX4yVFFxpLbnqqFWUtlJ1SpS3ZFx0zjW8kbplTDfW8Y5oqm0rGm2ZEpJoVkZn6Nte9yXF8pU8msFnB31vA8QpG1rLYoZSQhX06j_0OU4plOsMpWznk-SsUGRPuRRzTtCZl-QHm95MTcwuC1OyMLsszCGLsnJ5EJ6aAdqPhb_mF-DrHvAA8DEuN3FOFuwdubuMfw</recordid><startdate>20190601</startdate><enddate>20190601</enddate><creator>Mehmann, Andreas</creator><creator>Vogt, Christian</creator><creator>Varga, Matija</creator><creator>Port, Andreas</creator><creator>Reber, Jonas</creator><creator>Marjanovic, Josip</creator><creator>Pruessmann, Klaas Paul</creator><creator>Sporrer, Benjamin</creator><creator>Huang, Qiuting</creator><creator>Troster, Gerhard</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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| source | IEEE Electronic Library (IEL) |
| subjects | Change detection Equipment Design Female Frequency dependence Frequency measurement Frequency response Humans Liquid metal coil Liquid metals Magnetic resonance imaging Magnetic Resonance Imaging - instrumentation Magnetic Resonance Imaging - methods Male Metals - chemistry Neoprene Noise levels Phantoms, Imaging Proportional integral derivative radio frequency (RF) receive coil Receivers Resonance resonance frequency retuning Resonant frequency Signal to noise ratio Strain stretchable Voltage measurement |
| title | Automatic Resonance Frequency Retuning of Stretchable Liquid Metal Receive Coil for Magnetic Resonance Imaging |
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