title: PET/MRI assessment of the infarcted mouse heart.
abstract: Heart failure originating from myocardial infarction (MI) is a leading cause of death worldwide. Mouse models of ischaemia and reperfusion injury (I/R) are used to study the effects of novel treatment strategies targeting MI, however staging disease and treatment efficacy is a challenge. Damage and recovery can be assessed on the cellular, tissue or whole-organ scale but these are rarely measured in concert. Here, for the first time, we present data showing measures of injury in infarcted mice using complementary techniques for multi-modal characterisation of the heart. We usein vivomagnetic resonance imaging (MRI) to assess heart function with cine-MRI, hindered perfusion with late gadolinium enhancement imaging and muscular function with displacement encoded with stimulated echoes (DENSE) MRI. These measures are followed by positron emission tomography (PET) with 18-F-fluorodeoxyglucose to assess cellular metabolism. We demonstrate a protocol combining each of these measures for the same animal in the same imaging session and compare how the different markers can be used to quantify cardiac recovery on different scales following injury.
authors.affiliation: Wolfson Brain Imaging Centre, Department of Clinical Neurosciences, University of Cambridge, Cambridge, United Kingdom.
authors.forename: Guido
authors.initials: G
authors.lastname: Buonincontri
authors.affiliation: Department of Medicine, University of Cambridge, Cambridge, United Kingdom.
authors.forename: Carmen
authors.initials: C
authors.lastname: Methner
authors.affiliation: Department of Medicine, University of Cambridge, Cambridge, United Kingdom.
authors.forename: Thomas
authors.initials: T
authors.lastname: Krieg
authors.affiliation: Wolfson Brain Imaging Centre, Department of Clinical Neurosciences, University of Cambridge, Cambridge, United Kingdom.
authors.forename: Robert C
authors.initials: RC
authors.lastname: Hawkes
authors.affiliation: Wolfson Brain Imaging Centre, Department of Clinical Neurosciences, University of Cambridge, Cambridge, United Kingdom.
authors.forename: T Adrian
authors.initials: TA
authors.lastname: Carpenter
authors.affiliation: Wolfson Brain Imaging Centre, Department of Clinical Neurosciences, University of Cambridge, Cambridge, United Kingdom ; Behavioural and Clinical Neuroscience Institute, University of Cambridge, Cambridge, United Kingdom.
authors.forename: Stephen J
authors.initials: SJ
authors.lastname: Sawiak
keywords: PET/MRI; mouse; multimodality; myocardial infarction