Problems with organic materials for magnetic resonance imaging phantoms

Med Phys. 1988 Jan-Feb;15(1):61-3. doi: 10.1118/1.596293.

Abstract

Organic liquids are frequently used as magnetic resonance (MR) phantom materials. It is often not appreciated that indirect spin-spin coupling can dramatically affect signal amplitudes in spin-echo experiments. These effects are evidenced in three ways: (1) modulation of spin-echo amplitudes; (2) decrease in measured T2 relaxation times; and (3) dependence of spin-echo modulation and measured T2 values on the echo time (TE) in multiecho Carr-Purcell-Meibroom-Gill experiments. This paper illustrates these effects and warns against the inappropriate use of organic liquids as MR phantoms.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Copper
  • Copper Sulfate
  • Ether*
  • Ethyl Ethers*
  • Humans
  • Magnetic Resonance Imaging*
  • Models, Structural*

Substances

  • Ethyl Ethers
  • Ether
  • Copper
  • Copper Sulfate