Cooperberg P L, Chow T, Kite V, Austin S
J Clin Ultrasound. 1976 Dec;4(6):421-3. doi: 10.1002/jcu.1870040609.
Real time multitransducer B scanners can greatly facilitate obstetrical ultrasound examination. To assess the accuracy and reproducibility of biparietal diameter (BPD) measurement with the real time scanner, we compared the BPD using the real time scanner with the results obtained by conventional bistable leading edge and gray scale measurements. The results show that 73 to 90 per cent of the results with the real time scanner are within 1 mm of the other measurement and 94 per cent are within 2 mm. The variance of measurements on each case with the real time scanner is not significantly greater than the variance using the other two methods. We feel that the real time scanner can be a useful tool for obstetrical examinations and is accurate in the measurement of the biparietal diameter.
实时多换能器B型扫描仪可极大地便利产科超声检查。为评估实时扫描仪测量双顶径（BPD）的准确性和可重复性，我们将实时扫描仪测量的BPD与传统双稳态前沿和灰阶测量结果进行了比较。结果显示，实时扫描仪73%至90%的测量结果与其他测量结果相差在1毫米以内，94%相差在2毫米以内。实时扫描仪对每个病例测量的方差并不显著大于使用其他两种方法时的方差。我们认为，实时扫描仪可成为产科检查的有用工具，且在测量双顶径方面准确可靠。
