Compared vulnerabilities to small cardiac motions between different cameras used for myocardial perfusion imaging.
Fiche publication
Date publication
janvier 2018
Journal
Journal of nuclear cardiology : official publication of the American Society of Nuclear Cardiology
Auteurs
Membres identifiés du Cancéropôle Est :
Pr KARCHER Gilles, Pr MARIE Pierre-Yves, Pr BOULAHDOUR Hatem
Tous les auteurs :
Salvadori J, Petegnief Y, Sabbah R, Morel O, Boulahdour H, Karcher G, Marie PY, Imbert L
Lien Pubmed
Résumé
This phantom-based study was aimed to determine whether cardiac CZT-cameras, which provide an enhanced spatial resolution and image contrast compared to Anger cameras, are similarly affected by small cardiac motions. Translations of a left ventricular (LV) insert at half-SPECT acquisitions through six possible orthogonal directions and with 5- or 10-mm amplitude were simulated on the Discovery NM-530c and DSPECT CZT-cameras and on an Anger Symbia T2 camera equipped with an astigmatic (IQ.SPECT) or conventional parallel-hole collimator (Conv.SPECT). SPECT images were initially reconstructed as currently recommended for clinical routine. The heterogeneity in recorded activity from the 17 LV segments gradually increased between baseline and motions simulated at 5- and 10-mm amplitudes with all cameras, although being higher for Anger- than CZT-cameras at each step and resulting in a higher mean number of artifactual abnormal segments (at 10-mm amplitude, Conv.
Mots clés
CZT-cameras, anger-cameras, artifacts, myocardial perfusion imaging, patient motions
Référence
J Nucl Cardiol. 2018 Jan 11;: