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1·Objective To evaluate the value of dynamic contrast enhancement MRI in the diagnosis of pituitary micro-adenomas.

目的评价磁共振动态增强扫描诊断垂体微腺瘤的价值。

2·MRS can differentiate the nature of the lesions, and can improve the diagnostic specificity combined with dynamic contrast enhancement MRI.

MRS能够区分病变性质，与动态对比增强扫描联合应用能够提高诊断的特异性。

3·Objective To characterize the dynamic contrast enhancement in focal hepatic lesions with pulse inversion harmonic (PIH) ultrasonographic imaging.

目的探讨不同肝局灶性病变在超声造影反向脉冲谐波显像时的动态灌注过程及其特征。

4·A new contrast enhancement technique is presented, which can not only extend the dynamic scope of the image gray scale, but also increase the local image contrast.

此方法既扩大了图象灰度的动态范围，又使得图象中的局部对比度得到了增强。

5·Conclusion: The MR dynamic curves and contrast enhancement ratio may prove useful in estimating angiogenic activity and indicating prognosis in HCCs.

结论：肝细胞癌的磁共振动态增强曲线和对比增强率能够反映肿瘤微血管形成程度，从而有助于判断病人的预后。

6·The parameters for evaluation in dynamic contrast enhanced MRI included early enhancement rate, time signal intensity curve pattern and lesion's morphological features.

动态资料的评价参数包括：早期增强率、时间信号强度曲线类型以及病变的形态学特征。

7·Delayed enhanced MRI waste time and strength, rate of lesions detection was inferior to the dynamic and delayed conventional contrast enhancement. It should not be used as routine.

延迟增强扫描费时费力，检出率明显低于动态和常规延迟增强，不适应于常规应用。

8·Objective There are many image enhance methods in image engineering, for example contrast enhancement and dynamic range compression and so on.

目的在图像工程中，图像增强方法有多种，如增强对比度和动态范围压缩等等。

9·Sensitivity and specificity of Dynamic combined with delayed conventional contrast enhancement (FFE) were 100% and 90.9%.

动态增强与常规延迟增强(FFE序列)联合诊断微腺瘤的灵敏度和特异度分别是100%和90.9%。