双模态乳腺成像系统中新型钼靶压迫器对超声图像质量的影响  

Effect of the mesh paddle on the quality of ultrasound images in a dual-modality breast imaging system

作　　者：时丹丹[1] 李杰[1] 肖静[1] 王蒙[1] 张开宁[1] 

机构地区：[1]山东大学齐鲁医院超声科,济南250012

出　　处：《山东大学学报（医学版）》2011年第6期152-154,161,共4页Journal of Shandong University:Health Sciences

摘　　要：目的探讨双模态乳腺成像系统中新型钼靶压迫器对超声图像质量的影响。方法 41例经常规超声检查发现乳腺实性结节的患者(共43个结节),分别通过新型及传统钼靶压迫器进行二维及彩色多普勒超声检查。二维超声图像中比较使用两种压迫器的图像对比度、信噪比及信号强度的差异;彩色多普勒图像中通过计算彩色像素个数定量分析使用两种压迫器时血流信号显示的差异。结果 新型压迫器的超声图像对比度、信噪比及信号强度均明显高于传统压迫器(P均<0.01)。在常规超声检查可显示血流信号的22个乳腺结节中,使用新型及传统压迫器时血流信号的显示率分别为100%和40.91%。新型压迫器的血流信号显示量明显高于传统压迫器(P<0.001)。结论 在双模态乳腺成像系统中,新型钼靶压迫器可明显减少声衰减,显著提高超声图像质量。Objective To evaluate the mesh paddle as a substitute for the conventional paddle on the quality of the ultrasound image in a dual-modality breast imaging system. Methods Gray scale and color Doppler images were obtained through the mesh paddle and TPX paddle in 43 solid breast masses in 41 patients. The contrast, contrast-to-noise ratio （CNR） and signal strength of images were analyzed through different paddles. Flow signals were analyzed by calculating the number of color pixels in the color box. Results There were significant differences in contrast, CNR and signal strength between the mesh paddle and TPX paddle（ P 〈 0.01, P 〈 0.01 and P 〈 0.001, respectively）. In the 22 masses displaying flow signals in direct-contact scans, the display rate of flow signals through the mesh and TPX paddles was 100% and 40.91%, respectively. Compared with the mesh paddle, the number of color pixels for TPX paddle apparently decreased（P 〈0.001 ）. Conclusion The mesh paddle can improve ultrasound image quality, reduce acoustic attenuation and increase display rates of flow signals in the color Doppler mode in the dual-modality system.

关 键 词：乳腺肿瘤 双模态 超声检查 彩色多普勒 乳房X线摄影 

分 类 号：R445.1[医药卫生—影像医学与核医学] R445.4[医药卫生—诊断学]