Studies on establishment of diagnostic standard and improve the accuracy in veterinary ultrasonography

为建立兽医临床超声诊断标准，提高超声诊断的准确性进行了合作研究.在奶牛直肠扫描早期妊娠诊断中，发情周期中显示妊娠的胎囊图像和与子宫粘液有关的类似图像之间的鉴别诊断起着重要作用。胎儿首次可见后29天铝。准确性的基础上发展的FS图像的妊娠诊断是95%之间的22和24天后铝。在各种条件下牛肝脏的弥漫性变化中，发现随着肝脏回声的降低，水肿变性和/或脂肪变化的程度增加。肝脏边缘变钝、肝内血管扩张和狭窄可作为标准。根据成年奶牛的正常超声心动图图像， ...更多信息 肝实质可作为充血性肝硬化的诊断指标。直肠超声检查可简单诊断肾积水和肾囊肿.应用线阵和扇形扫描方法对犊牛先天性心脏病进行超声诊断。室间隔缺损合并主动脉瓣畸形检出率较高。牛严重创伤性心包炎时，病端心包图像、心包囊扩张、纤维蛋白漂浮和振荡运动可作为诊断指标。本文用水浴法比较了动物肿瘤与三种模型的声束衰减。肿瘤可分为三类。组织学上恶性肿瘤的图像表现为混合型回声，而良性肿瘤的图像表现为均匀型回声.用猪腹部表面扫描，在妊娠22天后获得了胎囊的图像，诊断准确率为100%。比格犬在妊娠22天后也观察到了胎囊的图像，准确率为100%。犬、猫轻度肾积水，肾盂壁扩张，呈线状强回声。在严重的情况下，获得了与填充肾实质和暴露于扩张肾盂的血管结缔组织之间的间隙的差距的液体有关的充满液体的回声的图像。少

Co-operative studies were performed to establish of diagnostic standard and improve the diagnostic accuracy of ultrasonography in veterinary clinic.1. Concerning early pregnancy diagnosis in dairy cattle by rectal scanning, differential diagnosis between fetal sac images indicating pregnancy and simillar images related to uterine mucus fluid during the estrus cycle play an important part. The fetuses were first visible 29 days after Al. Accuracy of pregnancy diagnosis based on development of FS images was 95% between 22 and 24 days after Al.2. In diffuse changes of the bovine liver with various conditions, it was found that as the echogenicity of the liver decreased, the degree of hydropic degeneration and/or fatty change increased. Blunting of the edge of the liver, dilatation and stricture of intrahepatic vessels may be present as a standard.3. Based on normal USG images in adult dairy cattle, images of dilatation of the hepatic and portal vein and increase of echogenicity of the par … More enchyma may be present as a diagnostic indicator for congestive liver chirrhosis. The diagnosis of hydronephrosis and renal cyst was simply made using rectal scan.4. Ultrasonic diagnosis of congenital heart disease in calves was performed by using both linear and sector scanning methods. Detection of ventricular septal defects comprises combined anomaly and anomaly of aortic valves were more easily than other defects. In severe traumatic pericarditis of cattle, images of sickend pericardium, dilatation of pericardial sac, floating and oscillatory motin of fibrin may be present as for diagnostic indicator.5. Comparisons of the sound beam attenuation between removed tumors from animals and 3 types of phantoms were made by water bath method. Tumors may be classified in three categories. Images of histologically malignant tumors in vivo showed mixed echo pattern but in benign tumors uniform echo pattern were obtained.6. By abdominal surface scanning of swine, images of fetal sac were obtained after 22 days gestation with 100% diagnostic accuracy. In beagle dogs, images of fetal sac were also observed after 22 days gestation with 100% accuracy.7. In mild cases of hydronephrosis of dog and cat, images of linear strong echo caused by dilated renal pelvic wall were observed. In severe cases images of fluid filled echo related to fluid which fill the gap between renal parenchyma and vascular connective tissue exposed to dilated renal pelvis were obtained. Less