Beissert M, Jenett M, Kessler C, Keberle M, Jahns R, Hahn D
Department of Radiology, University of Wurzburg, Germany.
J Ultrasound Med. 2001 Sep;20(9):953-7. doi: 10.7863/jum.2001.20.9.953.
To compare axial reconstructed ultrasonographic images from three-dimensional data volumes and conventional computed tomographic scans in documentation and detection of liver lesions.
The livers of 23 patients were examined by a multifrequency curved array transducer to acquire three-dimensional data volumes and by conventional computed tomography The ultrasonographic device was equipped with three-dimensional ultrasonographic technology allowing for real-time parallel movement in every plane within an acquired data volume. Axial ultrasonographic images reconstructed from three-dimensional data volumes were compared with conventional computed tomographic scans.
When both methods were taken together, a total of 51 different liver lesions could be detected. Reconstructed ultrasonographic images depicted 44 (86%) of 51 lesions, and computed tomographic scans showed 46 (90%) of 51 lesions. Compared with computed tomography, ultrasonography depicted 5 additional lesions in 3 of the patients (4 hemagiomas and 1 unspecified lesion), whereas 7 lesions were missed in another 4 patients (4 metastases, 2 calcifications, and 1 cyst). The Pearson correlation coefficient between ultrasonography and computed tomography was r = 0.84 (P < .001).
Our study shows that ultrasonographic images can be effectively reconstructed from three-dimensional data volumes. With respect to documentation and detection of liver lesions, the results obtained by three-dimensional ultrasonography appear comparable with those obtained by conventional computed tomography. However, several technical and procedural limitations have to be respected.
比较从三维数据体中重建的轴向超声图像与传统计算机断层扫描在肝脏病变记录和检测中的应用。
使用多频率曲线阵列换能器对23例患者的肝脏进行检查以获取三维数据体，并进行传统计算机断层扫描。超声设备配备了三维超声技术，可在采集的数据体内的每个平面进行实时平行移动。将从三维数据体重建的轴向超声图像与传统计算机断层扫描进行比较。
两种方法结合使用时，共检测到51个不同的肝脏病变。重建的超声图像显示了51个病变中的44个（86%），计算机断层扫描显示了51个病变中的46个（90%）。与计算机断层扫描相比，超声检查在3例患者中额外发现了5个病变（4个肝血管瘤和1个未明确的病变），而在另外4例患者中漏诊了7个病变（4个转移瘤、2个钙化灶和1个囊肿）。超声检查与计算机断层扫描之间的Pearson相关系数为r = 0.84（P <.001）。
我们的研究表明，可以从三维数据体有效地重建超声图像。在肝脏病变的记录和检测方面，三维超声检查获得的结果与传统计算机断层扫描获得的结果相当。然而，必须注意一些技术和程序上的限制。
