Abstract:
An ultrasonic imaging technique for differentiating the distribution of scatterers within a tissue comprises a correcting and an imaging procedure. The correcting procedure includes steps of obtaining ultrasonic backscattered signals from a standard phantom, compensating and demodulating the signals into an envelope image, calculating the parameter m and m, selecting a window to calculate parameter mw in each location of the envelope image and mw, if mw≠ m then increase the size of the window to repeat the steps above, and when mw= m, it is the optimal size of the window. The imaging procedure includes steps of obtaining ultrasonic backscattered signals from a target tissue, compensating and demodulating the signals into an envelope image, calculating mw in each location to form a mw matrix, and presenting the matrix by utilizing pseudocolors.
Abstract translation:用于区分组织内散射体分布的超声成像技术包括校正和成像过程。 校正过程包括从标准体模获取超声后向散射信号,补偿和解调信号到包络图像中的步骤,计算参数m和 m,选择窗口以计算参数m < w SUB>,并且 m SUB>,如果 m SUB> > m然后增加窗口的大小以重复上述步骤,当 m SUB> = m,它是窗口的最佳大小。 成像过程包括以下步骤:从目标组织获得超声后向散射信号,将信号补偿和解调为包络图像,在每个位置计算m≠W以形成矩阵 ,并通过利用假胶体呈现矩阵。
Abstract:
An ultrasonic imaging technique for differentiating the distribution of scatterers within a tissue comprises a correcting and an imaging procedure. The correcting procedure includes steps of obtaining ultrasonic backscattered signals from a standard phantom, compensating and demodulating the signals into an envelope image, calculating the parameter m and m, selecting a window to calculate parameter mw in each location of the envelope image and mw, if mw≠ m then increase the size of the window to repeat the steps above, and when mw= m, it is the optimal size of the window. The imaging procedure includes steps of obtaining ultrasonic backscattered signals from a target tissue, compensating and demodulating the signals into an envelope image, calculating mw in each location to form a mw matrix, and presenting the matrix by utilizing pseudocolors.
Abstract:
Disclosed is a method for survival prediction in gastric cancer patents after surgical operation, which uses a survival prediction model determined by known statistical method and gene expression microarray profiles. The survival prediction model is established by selecting special genes expressing significantly differential from pairs of cancerous and noncancerous tissue samples from patients with known survival conditions after surgical operation, confirming the concordance of RT-PCR analysis with the microarray gene expression profile, identifying most specific genes among the special genes using a statistical method, and determining the survival prediction model based on training set samples. The method of the present invention can be applied in gastric cancer patients to predict survival conditions after surgical operation and to provide a strategy for succeeding treatment and a reference for adjuvant chemotherapy.