veterinary B-ultrasound also has certain advantages in diagnosing heart diseases in small animals. For example, veterinary B-ultrasound can make correct diagnoses of pericardial effusion, valvular atresia and other diseases without damage, while such diseases are difficult to diagnose with traditional methods. Some people have used Doppler echocardiography to study the blood flow velocity and influencing factors of many canine hearts, including age, breed, gender, heart rate, disease, etc. It shows that the pulmonary artery is the part most susceptible to these factors, and the mitral valve and tricuspid valve also show obvious differences in opening and closing speed. All these conclusions provide a theoretical basis for diagnosing heart diseases. In addition, veterinary B-ultrasound shows unique advantages in diagnosing other diseases. Brain diseases generally include blood supply problems, tumors and nerve root compression, all of which can be shown on veterinary B-ultrasound images. Veterinary B-ultrasound also has its specificity in the examination of glands, such as prostate, adrenal glands, thyroid gland, pancreas, etc. Ultrasound is very important for diagnosing muscle, tendon and joint injuries in dogs. When muscles, tendons, and joints are injured, veterinary B-ultrasound can assist in diagnosis, such as muscle or tendon rupture, ectopic position, joint exudation, thickening of joint capsule, and other characteristic diagnoses.

Monitoring of the fetus and delivery of female dogs: The fetal age can be predicted based on the identifiable echo structure of the veterinary B-ultrasound image; fetal death, emphysema, embryo absorption, and miscarriage can be identified based on the fetal heartbeat and embryo structure. Monitoring delivery based on the internal structure of the uterus during and after delivery, judging whether delivery is over, and monitoring the postpartum involution of the uterus, etc.