TY - JOUR
T1 - Micro-positron emission tomography in the evaluation of Trypanosoma cruzi-induced heart disease
T2 - Comparison with other modalities
AU - Prado, Cibele M.
AU - Fine, Eugene J.
AU - Koba, Wade
AU - Zhao, Dazhi
AU - Rossi, Marcos A.
AU - Tanowitz, Herbert B.
AU - Jelicks, Linda A.
PY - 2009/11
Y1 - 2009/11
N2 - Noninvasive assessment of cardiac structure and function is essential to understand the natural course of murine infection with Trypanosoma cruzi. Magnetic resonance imaging (MRI) and echocardiography have been used to monitor anatomy and function; positron emission tomography (PET) is ideal for monitoring metabolic events in the myocardium. Mice infected with T. cruzi (Brazil strain) were imaged 15-100 days post infection (dpi). Quantitative 18F-FDG microPET imaging, MRI and echocardiography were performed and compared. Tracer (18F-FDG) uptake was significantly higher in infected mice at all days of infection, from 15 to 100 dpi. Dilatation of the right ventricular chamber was observed by MRI from 30 to 100 dpi in infected mice. Echocardiography revealed significantly reduced ejection fraction by 60 dpi. Combination of these three complementary imaging modalities makes it possible to noninvasively quantify cardiovascular function, morphology, and metabolism from the earliest days of infection through the chronic phase.
AB - Noninvasive assessment of cardiac structure and function is essential to understand the natural course of murine infection with Trypanosoma cruzi. Magnetic resonance imaging (MRI) and echocardiography have been used to monitor anatomy and function; positron emission tomography (PET) is ideal for monitoring metabolic events in the myocardium. Mice infected with T. cruzi (Brazil strain) were imaged 15-100 days post infection (dpi). Quantitative 18F-FDG microPET imaging, MRI and echocardiography were performed and compared. Tracer (18F-FDG) uptake was significantly higher in infected mice at all days of infection, from 15 to 100 dpi. Dilatation of the right ventricular chamber was observed by MRI from 30 to 100 dpi in infected mice. Echocardiography revealed significantly reduced ejection fraction by 60 dpi. Combination of these three complementary imaging modalities makes it possible to noninvasively quantify cardiovascular function, morphology, and metabolism from the earliest days of infection through the chronic phase.
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U2 - 10.4269/ajtmh.2009.09-0338
DO - 10.4269/ajtmh.2009.09-0338
M3 - Article
C2 - 19861629
AN - SCOPUS:70449701848
SN - 0002-9637
VL - 81
SP - 900
EP - 905
JO - American Journal of Tropical Medicine and Hygiene
JF - American Journal of Tropical Medicine and Hygiene
IS - 5
ER -