Fourier phase analysis can be used to assess dyssynchrony from nuclear images, such as multi-gated acquisition (MUGA) radionuclide angiography, gated blood-pool SPECT, and gated SPECT myocardial perfusion imaging. This chapter reviews the technical background of Fourier phase analysis with these imaging modalities and demonstrates how it measures ventricular dyssynchrony. The major clinical application of ventricular dyssynchrony assessment is to improve response to cardiac resynchronization (CRT) in patients with heart failure. This chapter introduces the current practice of CRT and the potential factors related to CRT response, and then reviews the clinical studies of the above phase analysis techniques for increasing CRT response.
Fourier Phase Analysis of SDSS Galaxies
