Elise J Vleeming1,2, Sergiy V Lazarenko3,2, Friso M van der Zant3,2, Xiao-Bo Pan4, Jerome M Declerck4, Maurits Wondergem3,2, Remco J J Knol3,2. 1. Cardiac Imaging Division Alkmaar, Northwest Clinics, Alkmaar, The Netherlands e.j.vleeming@nwz.nl. 2. PET Center Northwest/Department of Nuclear Medicine, Northwest Clinics, Alkmaar, The Netherlands; and. 3. Cardiac Imaging Division Alkmaar, Northwest Clinics, Alkmaar, The Netherlands. 4. Siemens Molecular Imaging, Oxford, United Kingdom.
Abstract
This study investigated differences in cardiac displacement during adenosine stress versus regadenoson stress in 13N-ammonia (13NH3) MP PET/CT scans. Methods: In total, 61 myocardial perfusion PET/CT scans were acquired using either adenosine (n = 30) or regadenoson (n = 31) as a stressor. For both groups, cardiac displacement during rest and stress was measured 3-dimensionally, relative to either a fixed reference frame or the previous frame, in each 1-min frame of a list-mode PET acquisition of 25 min. All stress scans were additionally evaluated for the presence of motion artifacts. Also, the tolerability of the agents and the occurrence of side effects were compared between groups. Results: Significantly larger cardiac displacement during stress was detected in the adenosine group than in the regadenoson group, reflected by both maximal cardiac displacement (P = 0.022) and mean cardiac displacement (P = 0.001). The duration of the movement was typically shorter in the regadenoson group. Frames with cardiac displacement of at least 5 mm were observed nearly twice as frequently when adenosine was used instead of regadenoson. Conclusion: The displacement during regadenoson stress is of lower amplitude and shorter duration than that during adenosine stress and may therefore contribute to a lower incidence of motion artifacts on PET/CT scans.
This study investigated differences in cardiac displacement during adenosinestress versus regadenosonstress in 13N-ammonia (13NH3) MP PET/CT scans. Methods: In total, 61 myocardial perfusion PET/CT scans were acquired using either adenosine (n = 30) or regadenoson (n = 31) as a stressor. For both groups, cardiac displacement during rest and stress was measured 3-dimensionally, relative to either a fixed reference frame or the previous frame, in each 1-min frame of a list-mode PET acquisition of 25 min. All stress scans were additionally evaluated for the presence of motion artifacts. Also, the tolerability of the agents and the occurrence of side effects were compared between groups. Results: Significantly larger cardiac displacement during stress was detected in the adenosine group than in the regadenoson group, reflected by both maximal cardiac displacement (P = 0.022) and mean cardiac displacement (P = 0.001). The duration of the movement was typically shorter in the regadenoson group. Frames with cardiac displacement of at least 5 mm were observed nearly twice as frequently when adenosine was used instead of regadenoson. Conclusion: The displacement during regadenosonstress is of lower amplitude and shorter duration than that during adenosinestress and may therefore contribute to a lower incidence of motion artifacts on PET/CT scans.
Authors: Jonathon A Nye; Marina Piccinelli; Doyeon Hwang; Charles David Cooke; Jin Chul Paeng; Joo Myung Lee; Sang-Geon Cho; Russell Folks; Hee-Seung Bom; Bon-Kwon Koo; Ernest V Garcia Journal: Med Phys Date: 2021-07-20 Impact factor: 4.506