A new paradigm for high-sensitivity 19F magnetic resonance imaging of perfluorooctylbromide

Magn Reson Med. 2010 Apr;63(4):1119-24. doi: 10.1002/mrm.22269.

Abstract

In the present work, the NMR properties of perfluorooctylbromide are revisited to derive a high-sensitivity fluorine MRI strategy. It is shown that the harmful effects of J-coupling can be eliminated by carefully choosing the bandwidth of the 180 degrees pulses in a spin-echo sequence. The T(2) of the CF(3) resonance of the molecule is measured using a multispin-echo sequence and shown to dramatically depend on the interpulse delay. Following these observations, an optimized multispin-echo imaging sequence is derived and compared with short TE/pulse repetition time gradient echo and chemical shift imaging sequences. The unparalleled sensitivity yielded by the multispin-echo sequence is promising for future applications, in particular for targeted contrast agents such as perfluorooctylbromide nanoparticles.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Contrast Media / chemistry*
  • Fluorine
  • Fluorocarbons / chemistry*
  • Hydrocarbons, Brominated
  • Image Enhancement / methods
  • Magnetic Resonance Imaging / methods*
  • Phantoms, Imaging
  • Sensitivity and Specificity

Substances

  • Contrast Media
  • Fluorocarbons
  • Hydrocarbons, Brominated
  • Fluorine
  • perflubron