PULMONARY ANGIOGRAPHY WITH 64‐MULTIDETECTOR‐ROW COMPUTED TOMOGRAPHY IN NORMAL DOGS |
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Authors: | RANDI DREES ALEX FRYDRYCHOWICZ NICHOLAS S KEULER SCOTT B REEDER REBECCA JOHNSON |
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Institution: | 1. Department of Surgical Sciences, School of Veterinary Medicine, University of Wisconsin‐Madison, Linden Drive 2015, Madison, WI 53706;2. Department of Radiology, School of Medicine and Public Health, University of Wisconsin‐Madison, 600 Highland Avenue, Madison, WI 53792;3. Department of Statistics, University of Wisconsin‐Madison, 1300 University Avenue, Madison, WI 53706.;4. Medical Physics, School of Medicine and Public Health, University of Wisconsin‐Madison, 600 Highland Avenue, Madison, WI 53792;5. Biomedical Engineering and Medicine, School of Medicine and Public Health, University of Wisconsin‐Madison, 600 Highland Avenue, Madison, WI 53792 |
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Abstract: | Pulmonary angiography using 64‐multidetector‐row computed tomography (MDCT) was used to evaluate pulmonary artery anatomy, and determine the sensitivity of pulmonary artery segment visualization in four Beagle dogs using images reconstructed to 0.625 mm and retro‐reconstructed to 1.25 and 2.5 mm slice thickness. Morphologically, characteristic features included a focal narrowing in the right cranial pulmonary artery in all dogs, which should not be mistaken as stenosis. While the right cranial pulmonary artery divided into two equally sized branches that were tracked into the periphery of the lung lobe in all dogs, only a single left cranial (cranial portion) lobar artery was present. Compared with 1.25 and 2.5 mm retro‐reconstructions, 0.625 mm reconstructions allowed for detection of significantly (P≤0.05) more pulmonary artery segments and sharper depiction of vessel margins. Clinical applications such as prevalence and significance of diameter changes, and detection of pulmonary arterial thrombembolism on lobar and sublobar level, using pulmonary angiography with 64‐MDCT applying 0.625 mm reconstruction slice thickness remain to be established. |
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Keywords: | canine lung multidetector computed tomography pulmonary artery |
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