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The purpose of this prospective study was to test the effects of two different anesthetic protocols on cardiac measurements in 10 healthy beagle dogs using 64\u2010multidetector row computed tomographic angiography (64\u2010MDCTA), 3T magnetic resonance (MRI) and standard awake echocardiography. Both anesthetic protocols used propofol for induction and isoflourane for anesthetic maintenance. In addition, protocol A used midazolam\/fentanyl and protocol B used dexmedetomedine as premedication and constant rate infusion during the procedure. Significant elevations in systolic and mean blood pressure were present when using protocol B. There was overall good agreement between the variables of cardiac size and systolic function generated from the MDCTA and MRI exams and no significant difference was found when comparing the variables acquired using either anesthetic protocol within each modality. Systolic function variables generated using 64\u2010MDCTA and 3T MRI were only able to predict the left ventricular end diastolic volume as measured during awake echocardiogram when using protocol B and 64\u2010MDCTA. For all other systolic function variables, prediction of awake echocardiographic results was not possible (<jats:italic>P<\/jats:italic> = 1). Planar variables acquired using MDCTA or MRI did not allow prediction of the corresponding measurements generated using echocardiography in the awake patients (<jats:italic>P<\/jats:italic> = 1). Future studies are needed to validate this approach in a more varied population and clinically affected dogs.<\/jats:p>","DOI":"10.1111\/vru.12269","type":"journal-article","created":{"date-parts":[[2015,6,17]],"date-time":"2015-06-17T04:59:24Z","timestamp":1434517164000},"page":"638-657","source":"Crossref","is-referenced-by-count":16,"title":["QUANTITATIVE PLANAR AND VOLUMETRIC CARDIAC MEASUREMENTS USING 64 MDCT AND 3T MRI VS. 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