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

https://www.ncbi.nlm.nih.gov/pubmed/29327252

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.