McEvoy F J, Koch J, Pedersen K M, Nielsen D H, Mantis P
Royal Veterinary and Agricultural University, Department of Clinical Studies, Copenhagen, Denmark.
Vet Radiol Ultrasound. 2003 Jul-Aug;44(4):443-9. doi: 10.1111/j.1740-8261.2003.tb00483.x.
Anechoic, spherical cystic lesions are important findings on ultrasound examination. In polycystic renal disease of cats, they may be the only ultrasonographic sign of disease. This study assesses the accuracy of ultrasound, as used in a veterinary setting, for the detection of cysts. Using a spherical lesion ultrasound imaging phantom and 7.5- to 8-MHz linear array transducers, images of cysts of 2- and 4-mm diameter were created at various imaging depths from 0 to 6 cm. These were digitized and given to a panel of readers for interpretation. Area under receiver operating characteristic curves were used to evaluate test accuracy. It was shown that test accuracy was different at different imaging depths and differed with machines of differing price category. It is suggested that when setting standards for quality control in ultrasound, criteria used might be better related to imaging outcome studies rather than to aspects of machine specification.
无回声的球形囊性病变是超声检查中的重要发现。在猫的多囊肾病中，它们可能是该疾病唯一的超声征象。本研究评估了兽医环境中使用的超声检测囊肿的准确性。使用球形病变超声成像体模和7.5至8兆赫兹的线性阵列换能器，在0至6厘米的不同成像深度创建了直径为2毫米和4毫米的囊肿图像。这些图像被数字化后交给一组读者进行解读。采用受试者工作特征曲线下面积来评估检测准确性。结果表明，检测准确性在不同成像深度有所不同，并且因价格类别的不同机器而有所差异。建议在制定超声质量控制标准时，所使用的标准可能与成像结果研究的关联性更好，而非与机器规格的方面相关。
