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COMPUTED TOMOGRAPHY ANGIOGRAPHY FOR EVALUATION OF PULMONARY EMBOLISM IN AN EXPERIMENTAL MODEL AND HEARTWORM INFESTED DOGS

Authors

  • JOOHYUN JUNG,

    1. Department of Veterinary Radiology, College of Veterinary Medicine, Seoul National University, San 56-1, Shillim-dong, Kwanack-gu, Seoul 151-741, Korea.
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  • JINHWA CHANG,

    1. Department of Veterinary Radiology, College of Veterinary Medicine, Seoul National University, San 56-1, Shillim-dong, Kwanack-gu, Seoul 151-741, Korea.
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  • SUNKYOUNG OH,

    1. Department of Veterinary Radiology, College of Veterinary Medicine, Seoul National University, San 56-1, Shillim-dong, Kwanack-gu, Seoul 151-741, Korea.
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  • JUNGHEE YOON,

    1. Department of Veterinary Radiology, College of Veterinary Medicine, Seoul National University, San 56-1, Shillim-dong, Kwanack-gu, Seoul 151-741, Korea.
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  • MINCHEOL CHOI

    1. Department of Veterinary Radiology, College of Veterinary Medicine, Seoul National University, San 56-1, Shillim-dong, Kwanack-gu, Seoul 151-741, Korea.
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Address correspondence and reprint requests to Prof Mincheol Choi, Department of Veterinary Radiology, College of Veterinary Medicine, Seoul National University, Seoul, Korea. E-mail: mcchoi@snu.ac.kr

Abstract

This study was performed to characterize pulmonary embolism with computed tomography pulmonary angiography in experimental pulmonary embolism and heartworm infected dogs. In the experimental group, there were pulmonary changes after pulmonary embolism induction as follows: hypoattenuating round filling defects in pulmonary arteries, arterial dilations with straight and abrupt cut-off appearances in the pulmonary embolism regions, pulmonary infarctions, a cavity formation and spontaneous pneumothorax, and emboli migration. In the heartworm-infected group, three out of eight dogs developed pulmonary embolism, especially in the right caudal arteries. Arterial dilations with typical tortuosity were also identified, mainly in the right caudal arteries in five dogs. Computed tomography pulmonary angiography can be an important imaging modality in the diagnosis of pulmonary embolism and the evaluation of pulmonary arterial and parenchymal changes in dogs.

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