Application of the chirp z-transform to MRI data

J. Kaffanke, T. Dierkes, S. Romanzetti, M. Halse, J. Rioux, M.O. Leach, B. Balcom, N.J. Shah

Research output: Contribution to journalArticlepeer-review


A version of the chirp z-transform (CZT) enabling signal intensity and phase-preserving field-of-view scaling has been programmed. The algorithm is important for all single-point imaging sequences such as SPRITE when used with multiple data acquisition for T* mapping or signal averaging. CZT has particular utility for SPRITE imaging of nuclei with short relaxation times such as sodium at high field. Here, a complete theory of the properties of CZT is given. This method operates entirely in k-space. It is compared with a conventional interpolation approach that works in image space after the application of a fast Fourier transformation.
Original languageEnglish
Pages (from-to)121-128
Number of pages8
JournalJournal of Magnetic Resonance
Issue number1
Early online date10 Oct 2005
Publication statusPublished - Jan 2006


  • Multiple point acquisition
  • Chirp z-transform
  • Interpolation
  • FOV scaling
  • MRI
  • Single point imaging
  • SPI

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