三维超声重建测量肾脏体积的实验研究

Evaluation of renal volume with three dimensional ultrasonography an experimental study

目的:评价三维超声对肾脏体积测量的准确性。方法:利用三维及二维超声经皮测量21枚活体肾脏体积(新西兰大白兔2只,成年杂种犬5只,小型香猪2头,拟切除移植肾3例)。移植肾和动物的肾剖腹后摘除通过水置换法测量体积。结果:三维超声和二维超声测量肾脏体积的准确率分别为97.36%和93.87%,与实际体积相比,三维超声测量值(r=0.9948,P=0.000)较二维超声测量值(r=0.9610,P=0.000)的一致性好。三维超声和二维超声测量的系统偏倚分别为0.75ml和1.67ml,一致性范围分别为-3.66～5.11ml和-8.15～10.79ml。结论:三维超声对肾脏体积的测量是可行的,具有较高的准确性和一致性。

Objective To evaluate the accuracy of three dimensional ultrasonography3DUS in the estimation of the kidney volume. Methods The volume of 21 kidneys was estimated with 3DUS and two dimensional ultrasound2DUS before they were removed from body2 rabbits 5 adult dogs 2 piglets and 3 patients. True volume of the kidney was determined by displacement of water in a beaker or measuring cylinder after the kidney were removed from the body. Results In vitro accuracy of 3DUS and 2DUS volumetery of kidney was 97.36% and 93.87% respectively. 3DUS was superior to 2DUS in term of assessing the volume of kidney and was characterized by a significantly smaller systematic bias and closer limit of agreement than 2DUS. Conclusion 3DUS volumetry measures kidney volume with high accuracy and was superior to 2DUS in kidney volume assessment.