Feeney D A, Johnston G R, Walter P A
Vet Clin North Am Small Anim Pract. 1985 Nov;15(6):1225-47. doi: 10.1016/s0195-5616(85)50367-8.
The techniques of and general interpretive principles of gray-scale, two-dimensional abdominal ultrasonography in small animals are described. Using case examples, commonly encountered imaging artifacts and categories of disease are integrated with a description of what was obtained by radiography. Tissue echogenicity as a basis for general assessment of organ abnormalities as well as the expectations (interpretive and prognostic) one should have of abdominal ultrasonography are presented.