甲状腺结节的实时超声弹性成像的研究

甲状腺结节的实时超声弹性成像的研究

张文静;王青;李璇;黄庆华;杨依依;吴凤林;谢波;冯前进;陈武凡

【期刊名称】《计算机应用与软件》

【年(卷),期】2013(030)003

【摘要】Mechanical characteristics and pathological changes of biological soft tissues are relative to their hardness. The elastographic information of soft tissue is therefore important in reference value to the diagnosis of disease. Ultrasound elastographic imaging directly describes the information relative to the stiffness of soft tissue in form of elastography. In our study, we used the methods of mutual information and dynamic programming to calculate the displacement map of the deformed phantom tissues and then to obtain the strain field map on that basis. At last we applied the aforementioned methods to form the elastography based on ultrasound B-mode data of thyroid nodule disease patients sampled in clinic. Experimental results show that, the mutual information method is simple in principle and easy to implement, but its operating efficiency and the imaging quality are all just ordinary; while the dynamic programming method has higher signal to noise ratio ( SNR) , contrast to noise ratio ( CNR) , resolution and time efficiency, and is more suitable to the real-time ultrasound elastography of thyroid nodules in clinic.%生物组织的力学特性和病理变化都与其硬度变化有关,因此,软组织的弹性信息对疾病的诊断具有重要参考价值.