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  • Title: Scintigraphic evaluation of pulmonary perfusion in dogs experimentally infected with Dirofilaria immitis.
    Author: Thrall DE, Badertscher RR, Lewis RE, McCall JW.
    Journal: Am J Vet Res; 1979 Oct; 40(10):1426-32. PubMed ID: 525864.
    Abstract:
    Pulmonary arterial perfusion was evaluated by perfusion lung scans in ten dogs experimentally infected with heartworm. After larval inoculation, scans were done once a month for 11 months. In 8 of 10 dogs, pulmonary arterial perfusion deficits were detected. The perfusion deficits involved the left cranial, right cranial, and right caudal lung lobes. Generally, there was a poor correlation between vascular abnormalities detected on the survey thoracic radiographs and the perfusion deficits detected by lung scanning. The perfusion deficits did not produce clinical signs or pulmonary infarction.
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