Cardiac contraction motion compensation in gated myocardial perfusion SPECT: A comparative study

Narges Salehi, Arman Rahmim, Emad Fatemizadeh, Afshin Akbarzadeh, Mohammad Hossein Farahani, Saeed Farzanefar, Mohammad Reza Ay

Research output: Contribution to journalArticle

Abstract

Introduction: Cardiac contraction significantly degrades quality and quantitative accuracy of gated myocardial perfusion SPECT (MPS) images. In this study, we aimed to explore different techniques in motion-compensated temporal processing of MPS images and their impact on image quality and quantitative accuracy. Material and method: 50 patients without known heart condition underwent gated MPS. 3D motion compensation methods using Motion Freezing by Cedars Sinai (MF), Log-domain Diffeomorphic Demons (LDD) and Free-Form Deformation (FFD) were applied to warp all image phases to fit the end-diastolic (ED) phase. Afterwards, myocardial wall thickness, myocardial to blood pool contrast, and image contrast-to noise ratio (CNR) were measured in summed images with no motion compensation (NoMC) and compensated images (MF, LDD and FFD). Total Perfusion Defect (TPD) was derived from Cedars-Sinai software, on the basis of sex-specific normal limits. Result: Left ventricle (LV) lateral wall thickness was reduced after applying motion compensation (p < 0.05). Myocardial to blood pool contrast and CNR in compensated images were greater than NoMC (p < 0.05). TPD_LDD was in good agreement with the corresponding TPD_MF (p = 0.13). Conclusion: All methods have improved image quality and quantitative performance relative to NoMC. LDD and FFD are fully automatic and do not require any manual intervention, while MF is dependent on contour definition. In terms of diagnostic parameters LDD is in good agreement with MF which is a clinically accepted method. Further investigation along with diagnostic reference standards, in order to specify diagnostic value of each technique is recommended.

Original languageEnglish (US)
Pages (from-to)77-82
Number of pages6
JournalPhysica Medica
Volume49
DOIs
StatePublished - May 1 2018

Keywords

  • Contraction
  • FFD
  • Log-domain Diffeomorphic demons
  • Motion compensation
  • Motion freezing
  • Myocardial perfusion SPECT
  • QPS

ASJC Scopus subject areas

  • Biophysics
  • Radiology Nuclear Medicine and imaging
  • Physics and Astronomy(all)

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    Salehi, N., Rahmim, A., Fatemizadeh, E., Akbarzadeh, A., Farahani, M. H., Farzanefar, S., & Ay, M. R. (2018). Cardiac contraction motion compensation in gated myocardial perfusion SPECT: A comparative study. Physica Medica, 49, 77-82. https://doi.org/10.1016/j.ejmp.2018.05.004