IMPROVEMENT OF NON-INVASIVE DIAGNOSTIC METHOD FOR DISFUNCTIONS OF HEART, LIVER AND KIDNEY BY HEMODYNAMIC ANALYSIS USING DOPPLER ULTRASONOGRAPHY IN DOGS.

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The purposes of this study were to investigate the relationship of hemodynamics of the heart, liver or kidney and their pathophysiology using Doppler ultrasonography, and to establish non-invasive diagnosis of the disfunction of these organs in dogs.Two-dimentional, transesophageal Doppler and continuous-wave Doppler echocardiographies were considerded useful non-invasive diagnostic methods for the estimation of canine cardiac function. Doppler ultrasound provided complemental functional information about the liver and the bilary system which may help minimize the need for invarsive procedures such as laparotomy or laparoscopy, and also might be a useful tool for evaluating changes in the portal blood flow which may affect liver function. On kidney function, Doppler is a significantly accuraye, non-invarsive technique for mesuring renal blood flow in dogs. It is important to evaluate each parameter comprehensively for application in the the diagnosis of canine renal diseases, and it was posible to evaluate renal hemodynamics in real-time using the Doppler method.In conclusion, the non-invarsive evaluation of organ hemodynamics by the Doppler ultrasonography offers a new diagnostic technique for the evaluation of canine cardiac, liver and renal functions.