title: Dedicated receiver array coil for1H lung imaging with same-breath acquisition of hyperpolarized3He and129Xe gas.
abstract: OBJECTIVE
  Same-breath acquisition of1H and hyperpolarized gases (3He and129Xe) in the lungs provides complementary information on pulmonary structure and function with inherent spatial-temporal registration of the images from the different nuclei. To date1H images have been acquired using the MR system's body coil, which has low SNR when compared with dedicated receiver-array coils. This study demonstrates the design and application of a dedicated1H receiver array to improve the1H lung SNR for use in same-breath acquisition with hyperpolarized gas3He or129Xe at 1.5 Tesla.
  
  
  METHODS
  A four-loop dedicated receiver-array was developed in-house for1H lung MRI to work in compatibility with existing3He/129Xe transmit-receive coils. As part of the design process, a new generalized circuit formalism was developed for trap circuits for such a dedicated1H receiver array at 63.8 MHz with traps for3He 48.6 MHz and129Xe 17.7 MHz.
  
  
  RESULTS
  The1H lung image SNR from the novel1H array was twice that observed with the1H body coil when used in same-breath acquisition with the3He or129Xe T-R coil in situ.
  
  
  CONCLUSIONS
  An array coil to improve1H SNR of the lung in same-breath acquisition with hyperpolarized gases has been demonstrated. Magn Reson Med 74:291-299, 2015. © 2014 Wiley Periodicals, Inc.
authors: Unit of Academic Radiology, University of Sheffield, Sheffield, United Kingdom.
authors: Madhwesha
authors: M
authors: Rao
authors: Unit of Academic Radiology, University of Sheffield, Sheffield, United Kingdom.|GE Healthcare, Cleveland, Ohio, USA.
authors: Fraser
authors: F
authors: Robb
authors: Unit of Academic Radiology, University of Sheffield, Sheffield, United Kingdom.
authors: Jim M
authors: JM
authors: Wild
keywords: hyperpolarized gas; lungs; pulmonary; receiver array