Assessment of myocardial CZT-SPECT recording in a forward-leaning "biker-like" position.
Fiche publication
Date publication
novembre 2018
Journal
Journal of nuclear medicine : official publication, Society of Nuclear Medicine
Auteurs
Membres identifiés du Cancéropôle Est :
Pr KARCHER Gilles, Pr MARIE Pierre-Yves, Pr VERGER Antoine, Dr CLAUDIN Marine
Tous les auteurs :
Perrin M, Roch V, Claudin M, Verger A, Boutley H, Karcher G, Baumann C, Veran N, Marie PY, Imbert L
Lien Pubmed
Résumé
This prospective randomized study aimed at assessing myocardial perfusion imaging recorded with the high-sensitivity "D.SPECT" cadmium-zinc-telluride (CZT) camera in a forward-leaning "biker-like" position, which may potentially lower diaphragmatic attenuation as well as reduce breathing-related cardiac motions, in manner comparable to the prone position proposed with other SPECT cameras. Patients referred to a stress-rest Tc-Sestamibi protocol and positioned in the "biker" position, with the chest leaning forward on the D.SPECT camera-head at 35° from vertical, had an additional resting D.SPECT recording in supine position ( = 40) or sitting position with the back rearward at 30° from vertical ( = 40). Segments with attenuation artifacts were defined as those with < 65% uptake but with strictly normal contractility at Gated-SPECT and no defect reversibility from stress images. The biker position was associated with: 1) lower heart-to-detector distances than supine or sitting positions (both p<0.001), 2) lower cardiac motion amplitudes, assessed on panograms, than the supine position (p<0.001) and 3) fewer segments with attenuation artifacts than supine (on average, 1.10±1.01 vs. 1.90±1.74, = 0.010) and sitting positions (0.75±0.93 vs. 1.38±1.60, = 0.011). Myocardial perfusion images from D.SPECT are enhanced for patients positioned in a forward-leaning "biker-like" position comparatively to sitting or supine positions, with a notably lower rate of attenuation artifacts.
Mots clés
CZT camera, Cardiology (clinical), Instrumentation, SPECT, attenuation artifacts, left ventricular function, myocardial perfusion imaging, patient position
Référence
J. Nucl. Med.. 2018 Nov 2;: