Accuracy of radiographic diagnosis of canine bronchitis THORACIC radiographs from 23 dogs with chronic bronchitis and 11 dogs, matched for age and body weight, which were clinically normal were assessed by two independent examiners who had no knowledge of the dogs' condition. The examiners were consistent in their interpretations, but the only radiographic signs which were more common in the dogs with bronchitis were thickening of the bronchial walls and increased numbers of visible bronchial walls. Bronchial calcification and an interstitial pattern were equally common in the two groups of dogs. The accuracy of a radiographic diagnosis of chronic bronchitis is limited principally by the insensitivity of the technique for bronchial lesions. MANTIS, P., LAMB, C. R. & BOSWOOD, A. (1998) Journal of Small Animal Practice 39, 518 Measurements of urine pH in cats and dogs DIFFERENCES of 0-25 pH units in the urine of a cat or dog can be important in making clinical decisions, and it is therefore important that simple dipstrips should give an indication of urine pH within 0.25 units of the true value. In tests of 164 samples from 88 cats and 16 dogs, some of them with urinary tract infections, only 40 per cent of the results obtained with a dipstrip were within 0.25 units of the results obtained with a pH meter. When an accurate urine pH is necessary it should be measured with a pH meter. HEUTER, K. J., BUFFNGTON, C. A. T. & CHEW, D. J. (1998) Journal of the American Veterinary Medical Association 213, 996 695