[Diagnosis of teat stenosis in cattle using ultrasonic tomography (literature review)].

This review deals with the relevant literature about the application of ultrasonography in udder diagnosis especially in stenosis of the teat in cattle. Ultrasonic devices, frequencies and ultrasonic techniques are discussed. It seems that under practical conditions, a 5 MHz linear scanner might be sufficient. Compared with radiography, ultrasonography gave better results in high and medium stenoses of the teat. The results of these first investigations demonstrated that with the development of suitable devices and techniques, ultrasonography might be of high importance as an additional and supporting technique for the diagnosis of stenoses of the teat.