Yokoyama N, Nagayama Y, Kakezono F, Kiriyama T, Morita S, Ohtakara S, Okamoto S, Morimoto I, Izumi M, Ishikawa N
J Nucl Med. 1986 Sep;27(9):1475-9.
We developed a new ultrasonic scanner for the thyroid and, in this study, the estimated volumes of the thyroids by this scanner were compared with the weights of those obtained at operation. In this ultrasonic scanner, an annular array transducer was employed instead of the conventional single element concave transducer. The distance of the focused area by this transducer was as long as 5 cm compared to 1 cm by the conventional transducer; therefore, the image obtained by the new scanner was so clear that it was not difficult to draw accurately the outlines of the thyroids. The volumes of the thyroids were calculated by a computerized digitizer. The estimated volumes of the thyroids by the ultrasonic scanner were closely correlated with their weights calculated by adding the actual weights of the thyroids removed to the estimates of the thyroids left at operation. Their correlation coefficients were as high as 0.99. This suggests that this new ultrasonic scanner is very useful in the determination of the volumes of the thyroids, since the measurement is very accurate, simple, and reproducible.
我们研发了一种新型甲状腺超声扫描仪，在本研究中，将该扫描仪估算的甲状腺体积与手术获取的甲状腺重量进行了比较。在这种超声扫描仪中，采用了环形阵列换能器而非传统的单元素凹面换能器。与传统换能器聚焦区域距离为1厘米相比，该换能器的聚焦区域距离长达5厘米；因此，新扫描仪获取的图像非常清晰，准确描绘甲状腺轮廓并不困难。甲状腺体积通过计算机数字化仪计算得出。超声扫描仪估算的甲状腺体积与通过将切除甲状腺的实际重量与手术中残留甲状腺的估算重量相加计算得出的重量密切相关。它们的相关系数高达0.99。这表明这种新型超声扫描仪在甲状腺体积测定中非常有用，因为测量非常准确、简单且可重复。
