| 摘要: |
| 目的 本试验采用二维超声进行体外实验和在体试验，应用大量数据运算出新的实用性更高的膀胱容积测量公式，并验证其准确性。
方法 使用二维超声测量不同形状水囊最大横切面左右径，最大横切面上下径和最大纵切面左右径。测量不同形状水囊数据，推导出新的膀胱容积测量公式并验证其准确性；对比新公式与椭球公式、Lambert经验公式准确性；再次分析三种公式在体试验中的误差和准确性。
结果 训练集数据得出4组新公式系数：k1为0.6244、k2为0.6399、k3为0.6713，以及平均系数k为0.6542；分析验证集数据得出新公式平均系数k误差最小，r2接近于1；预测数据和真实数据的相关性为0.998，组内相关系数等于0.996，显著性(P<0.05)；对比分析验证集数据，得出新公式（V=0.6452LWH）较椭球公式、Lambert经验公式误差相对更小，r2接近于1；在体试验数据中对比三种公式，新公式误差相对更小。
结论 不同容积区间应用不同系数测量结果更为准确；当不区分容积分组或实际临床工作中，训练集平均系数K=0.6542的误差相对更小。
关键词
膀胱；容积；二维超声；新公式 |
| 关键词: 膀胱 容积 二维超声 新公式 |
| DOI： |
| 投稿时间：2024-06-20修订日期：2024-08-13 |
| 基金项目: |
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| Two-dimensional ultrasound bladder volume measurement formula feasibility |
| Niu Tiejun,Yuan Lijun,Zhang Yuexuan,Wei yuhong,Li wen,Shi yucong,Chu yinzhu |
| (THE FIRST AFFILIATED HOSPITAL OF HARBIN MEDICAL UNIVERSITY) |
| Abstract: |
| Objective In this study, two-dimensional ultrasound was used to carry out in vitro and in vivo experiments. A new and more practical bladder volume measurement formula was calculated with a large number of data, and its accuracy was verified.. Methods Two-dimensional ultrasound was used to measure the maximum cross-section diameter, the maximum cross-section diameter and the maximum longitudinal section diameter. The accuracy of the new formula was compared with that of ellipsoid formula and Lambert empirical formula The error and accuracy of the three formulas are analyzed again.. Results The training set data obtained four new formula coefficients:k1=0.6244,k2 =0.6399, k3=0.6713, and the average coefficient k=0.6542.The analysis and validation set data obtained that the average coefficient k error of the new formula is the smallest, r2 was close to 1. The correlation between predicted data and real data was 0.998, and the intra-group correlation coefficient was 0.996,which was significant((P<0.05), the error of the new formula (V=0.6452lwh) is smaller than that of the ellipsoid formula and the Lambert empirical formula (r2 is close to 1) . Conclusions Different coefficients were more accurate in different volume intervals, and the error of k=0.6542 was smaller when the training set was not divided into different volume groups or clinical work.
Keywords: bladder; volume; two-dimensional ultrasound; new formula |
| Key words: bladder testis volume two-dimensional ultrasound new formula |
