Summary:The objectives of the present study were to describe the complementary use of radiography and ultrasonography in the diagnosis of upper urinary tract disorders in dogs, and to compare ultrasonographic findings with the survey and contrast radiographic findings in the evaluation of canine upper urinary tract diseases. The study materials were composed of 22 dogs of various breed, age, and sex with upper urinary tract diseases. Pyelonephritis (9 cases), acute renal failure (7 cases), policystic renal disease (2 cases), bilateral hydronephrosis (one case), radiopaque nephrolith (2 cases), unilateral ectopic ureter (one case) were diagnosed radiographically and ultrasonographically. The results of the present study indicate that ultrasonography was more sensitive than radiography in diagnosis of upper urinary diseases but was incapable in qualitative evaluation of renal functions and in examination of the ureters. Survey radiographs had little value in the diagnosis of pyelonephritis, disorders of renal pelvis, ureters except for the identification of radiopaque nephrolith. It was determined that EU was valuable for determination of the ectopic ureter, hydronephrosis, and evaluation of renal function.
Radiographic examination is a common method for diagnosis of pulmonary diseases but it is not always adequate for accurate diagnosis. Therefore, an advanced imaging method as computed tomography (CT) was used in this study for veterinary purposes. This study aimed the comparison of the two imaging methods for evaluation of pulmonary diseases in dogs. 20 dogs of various breeds, age and sex with complaints of lung disease made up the materials of the study. Following the patient history and clinical examination, radiographic examination and CT examination were performed and the outcomes were evaluated. Pulmonary nodules/masses or calcified foci in 12 patients, pleural effusion and pneumothorax in 4 patients, pulmonary edema in 2 patients, tracheal collapse and megaesophagus in two patients were diagnosed by using both radiographic and CT examination. As a conclusion, radiographic examination provides an initial diagnosis for severe diseases and can be used as first imaging modality for lung diseases, but CT has superiority over radiography due to its ability to provide cross-sectional images and more accurate diagnosis.
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