CAJ | 학술논문

目的：应用计算机定量分析能量多普勒显像(PDI)显示犬肾不同程度血流灌注的准确性。方法：手术暴露犬右肾动脉，将电磁流量计和微米缩窄器固定其上，制备不同肾血流灌注模型。PDI显示肾血流图，计算机脱机分析肾血流图的彩色象素面积(CPA)和彩色亮度值(CV)。PWD测量肾段动脉的PSV、RI。结果：肾血流图CPA、CV及肾段动脉PSV、RI均与肾动脉血流量呈线性正相关(r＝0.99)。以肾血流量减少50%和75%时，CPA减少明显(P＜0.05和P＜0.01)。而CV值仅在血流减少75%时下降明显(P＜0.05)。PSV、RI均有明显变化(P＜0.05)。结论：PDI可以较准确反映犬肾血流灌注的异常变化。
목적：응용계산궤정량분석능량다보륵현상(PDI)현시견신불동정도혈류관주적준학성。방법：수술폭로견우신동맥，장전자류량계화미미축착기고정기상，제비불동신혈류관주모형。PDI현시신혈류도，계산궤탈궤분석신혈류도적채색상소면적(CPA)화채색량도치(CV)。PWD측량신단동맥적PSV、RI。결과：신혈류도CPA、CV급신단동맥PSV、RI균여신동맥혈류량정선성정상관(r＝0.99)。이신혈류량감소50%화75%시，CPA감소명현(P＜0.05화P＜0.01)。이CV치부재혈류감소75%시하강명현(P＜0.05)。PSV、RI균유명현변화(P＜0.05)。결론：PDI가이교준학반영견신혈류관주적이상변화。
Objective:To observe the accuracy of PDI in different canine renal blood perfusions by using computer analysis.Methods：Six healthy dogs were chosen and their main right renal arteries were exposed by surgery.Under the guidance of renal artery blood flow volume displayed on the electromagnetic flowmeter,different renal blood perfusion models were made with the micrometer constrictor.Then the color pixel area (CPA)and color value(CV) of PDI and the peak systolic velocity (PSV)and RI of renal segmental artery were calculated and analyzed.Results:The CPA、CV、PSV and RI tended to decrease with gradual reduction of the blood flow of renal artery and the decrease was especially significant when the renal blood flow reduced by 75%(P＜0.05).The changes of PSV and RI were also significant(P＜0.05).Conclusions:PDI can accurately reflect changes in the canine renal blood perfusions.