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首页> 外文期刊>Clinical imaging >Significance of resistive index in color Doppler ultrasonogram: differentiation between benign and malignant breast masses.
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Significance of resistive index in color Doppler ultrasonogram: differentiation between benign and malignant breast masses.

机译：彩色多普勒超声检查中电阻指数的意义：乳腺肿块良恶性的区别。

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摘要

The objective of this article is to evaluate the significance of resistive index in differentiation between benign and malignant breast lesions on duplex ultrasonographic examination. Resistive indices obtained in 106 breast lesions of 104 patients were included. Sixty-four were benign (mean age: 32.4 +/- 11.1 years), and 42 were malignant lesions (mean age: 47.8 +/- 11.4 years). The resistive index was classified as follows: below 0.49, from 0.5 to 0.59, 0.6 to 0.69, 0.7 to 0.79, and above 0.8. We analyzed and defined the optimal threshold value of RI between benign and malignant lesions. The mean values of the RI of benign and malignant lesions were 0.62 +/- 0.095 (range 0.44-0.86) and 0.74 +/- 0.097 (range, 0.50-0.92), respectively. The resistive index exceeded 0.7 in 80% of malignant lesions. The difference of the RI between malignant and benign lesions was statistically significant when the threshold value was 0.7 (P < 0.001). A resistive index over 0.7 may suggest malignant lesions. Due to the considerable overlap of the range of the RI, it may not be diagnostic in any single patient; however, it may be helpful in conjunct with gray-scale image.
机译：本文的目的是评估双相超声检查中电阻指数在区分乳腺良恶性病变中的意义。包括104例患者的106例乳腺病变中获得的电阻指数。良性病变为64例（平均年龄：32.4 +/- 11.1岁），恶性病变为42例（平均年龄：47.8 +/- 11.4岁）。电阻指数分类如下：低于0.49、0.5至0.59、0.6至0.69、0.7至0.79和高于0.8。我们分析并定义了良性和恶性病变之间的最佳RI阈值。良性和恶性病变的RI平均值分别为0.62 +/- 0.095（范围0.44-0.86）和0.74 +/- 0.097（范围0.50-0.92）。在80％的恶性病变中，电阻指数超过0.7。当阈值为0.7（P <0.001）时，恶性和良性病变之间的RI差异具有统计学意义。电阻指数超过0.7可能提示恶性病变。由于RI的范围有相当大的重叠，因此可能无法在任何单个患者中进行诊断;但是，与灰度图像配合使用可能会有所帮助。

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