Automatic RF leakage signal canceler in MRI applications
| Autor: | Michael Garwood, Sung-Min Sohn, John Thomas Vaughan |
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| Rok vydání: | 2017 |
| Předmět: |
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medicine.diagnostic_test Computer science Magnetic resonance imaging Rf excitation 030218 nuclear medicine & medical imaging 03 medical and health sciences 0302 clinical medicine Electromagnetic coil medicine Electronic engineering Mr images 030217 neurology & neurosurgery Decoupling (electronics) Leakage (electronics) Wireless control |
| Zdroj: | 2017 IEEE MTT-S International Microwave Symposium (IMS). |
| Popis: | This work presents the feasibility demonstration of an automatic RF leakage canceler for magnetic resonance imaging (MRI) applications that require a simultaneous transmit and receive (STAR) system. The automatic system with wireless control enables a radiofrequency (RF) coil to achieve greater than 40 dB decoupling between transmit and receive ports in 900 ms. The system stability and noise contribution to MR images were evaluated. To demonstrate feasibility of this approach, MR images were acquired by transmitting an RF excitation pulse and acquiring an MR receive signal simultaneously on a 4-tesla (T) MRI scanner. |
| Databáze: | OpenAIRE |
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