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lead to respiratory motion artifacts and gating limitations, which make RT3DE unfeasible in those patients. Fourth, in the present study, the image of the LV was generated out of 4 subvolumes during RT3DE. Left-ventricle cutting is possible up to 7

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in American Journal of Veterinary Research

, echocardiography has some limitations; for example, imaging from some angles can result in foreshortened views of the left ventricle, and different projections cannot be acquired during a single cardiac cycle. Multi-detector row CT may provide a suitable means of

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in American Journal of Veterinary Research

the cranial abdomen, including left ventricle, liver, and gall bladder, and vertebrae (from ninth thoracic vertebra to second lumbar vertebra). The scan duration for each PET/CT protocol and the time interval between the 2 PET scans was recorded

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in American Journal of Veterinary Research

-certified veterinary radiologist (MD). The SV was first calculated on the basis of morphological changes over 1 cardiac cycle for the short-axis (left and right ventricle) and long-axis (only left ventricle) planes. Endo- and epicardial contours of both ventricles

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in American Journal of Veterinary Research

are required to establish the reference ranges of TDI values for radial and longitudinal motions of the left ventricle. Therefore, the primary objective of the study reported here was to describe and analyze radial and longitudinal velocities of the

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in American Journal of Veterinary Research

necessarily consecutive, heart cycles. Software within the ultrasound machine recorded all measurements for the left atrium and aorta and calculated the LA:Ao and the mean for each variable. M-mode echocardiographic measurements of the left ventricle were

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in American Journal of Veterinary Research

obtained from the left thorax during systole. The same investigator (MMD) performed all echocardiographic examinations and measurements. Echocardiographic measurements —The M-mode measurements of the left ventricle were determined from a 2-D short

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in American Journal of Veterinary Research

the left atrium and left ventricle; the short axis includes portions of the right and left cardiac chambers and spans the atria, most likely at the level of the coronary groove and atrioventricular valves. 1,8,14,15 On ventrodorsal radiographs, the

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in American Journal of Veterinary Research

a dog. Notice the good contrast between the blood and myocardium. End-diastolic and end-systolic frames were chosen on the basis of visual inspection of the cine mode. Notice the maximum midventricular dilatation of the left ventricle in the end

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in American Journal of Veterinary Research

immersion in 2.5% I 2 KI solution. A—Prior to iodination (0 hour), no internal structure is seen. B—After 24 hours of immersion, iodination is improved, although a halo of darkness around the left ventricle is still present. C—After 48 hours of immersion

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in American Journal of Veterinary Research