نتایج جستجو برای: 13n

تعداد نتایج: 345  

Journal: :Journal of nuclear medicine : official publication, Society of Nuclear Medicine 2005
Zhang Xiangsong Yue Dianchao Tang Anwu

UNLABELLED We have developed a new imaging method to evaluate the blood perfusion and ammonia metabolism of the pituitary gland, and we preliminarily assessed its role in the diagnosis of hypopituitarism. METHODS Six female healthy volunteers (age range, 20-46 y) and 6 female patients (age range, 23-42 y) were enrolled in this study. Dynamic (13)N-NH(3) PET was performed. Time-activity curves...

Journal: :Annals of nuclear cardiology 2022

Background: Due to the limitation of spatial resolution, cardiac nuclear medicine images have not been applied feature-tracking method automatic extraction myocardial contours. We successfully high-resolution cine 13N-ammonia positron emission tomography (PET) calculate regional strains. Here, we investigate potential PET-derived strain detect ischemia-related wall motion abnormality.Methods: D...

Journal: :Journal of nuclear medicine : official publication, Society of Nuclear Medicine 2010
Erick Alexánderson Juan M Ochoa Rodrigo Calleja Juan G Juárez-Rojas John O Prior Rodrigo Jácome Edgar Romero Aloha Meave Carlos Posadas-Romero

UNLABELLED Systemic lupus erythematosus (SLE) affects multiple organs and systems, severely involving the cardiovascular system. The aim of this study was to evaluate the presence of endothelial dysfunction with (13)N-ammonia PET in asymptomatic SLE patients. METHODS We enrolled 16 women with SLE and 16 healthy women. Myocardial blood flow (MBF) was quantified in a 64-slice PET/CT scanner at ...

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