Computed tomographic bronchial collapsibility values over 50% may be detected in healthy dogs
| Autor: | Dayoung Oh, Mincheol Choi, Siheon Lee, Seungji Kim, Junghee Yoon, Sangkyung Choen |
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| Rok vydání: | 2018 |
| Předmět: |
Male
040301 veterinary sciences Bronchi Pilot Projects 030218 nuclear medicine & medical imaging Computed tomographic 0403 veterinary science 03 medical and health sciences 0302 clinical medicine Dogs Biopsy medicine Animals Expiration Dog Diseases Prospective Studies Lobar Bronchus Bronchus General Veterinary Human studies medicine.diagnostic_test business.industry Bronchomalacia 04 agricultural and veterinary sciences Anatomy respiratory system medicine.disease Sagittal plane respiratory tract diseases medicine.anatomical_structure Inhalation Exhalation Female business Tomography X-Ray Computed |
| Zdroj: | Veterinary radiologyultrasound : the official journal of the American College of Veterinary Radiology and the International Veterinary Radiology Association. 60(1) |
| ISSN: | 1740-8261 |
| Popis: | Bronchomalacia and bronchial collapse are important causes of chronic coughing in dogs. The current reference standard diagnostic tests for these problems are flexible bronchoscopy and biopsy. Previous human studies have also supported inspiration/expiration computed tomography (CT) as a diagnostic test. The current prospective, pilot study aimed to determine whether inspiration/expiration CT is also a feasible test for quantifying bronchial collapsibility in dogs. Thoracic CT images were acquired using a 64-row multidetector CT for 10 healthy Beagle dogs during maximal inspiration and expiration. For each scan, one observer measured transverse sectional areas of the mainstem and lobar bronchi, and the dorsal and ventral segmental bronchi of the left cranial lobar bronchus. Diameters for each bronchus were also measured in transverse, sagittal, and dorsal planes. Bronchial collapsibility (%) was calculated as the difference between inspiration/expiration transverse sectional areas divided by the inspiration transverse sectional areas. Mean bronchial collapsibility of all bronchi was 38.20 ± 15.17%. A collapsibility of over 50% was found in the dorsal (n = 7) and ventral (n = 4) segmental bronchi of the left cranial lobar bronchus, and the left caudal (n = 5) and right middle (n = 2) lobar bronchus. Bronchial collapsibility measurements were greater in the dorsal and ventral segmental bronchi of the left cranial lobar bronchus and the left caudal lobar bronchus (P < 0.001). Findings supported inspiration/expiration CT as a modality to noninvasively assess bronchial collapse in dogs and a bronchial collapsibility value greater than 50% for detecting pathologic bronchial collapse in clinically affected dogs. |
| Databáze: | OpenAIRE |
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