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目的研究超声弹性成像(UE)应变率比值(SR)与CT径线比诊断乳腺癌腋窝淋巴结转移的价值。方法 118例初治乳腺癌患者(共包括腋窝淋巴结153个)作为研究对象,术前行UE和CT检测,观察淋巴结转移情况,比较转移性淋巴结和非转移性淋巴结的SR和CT径线比值。结果所有受试者均顺利完成检测,经病理诊断证实,本研究中转移性淋巴结70个(45.75%,70/153),非转移性淋巴结83个(54.25%,83/153)。转移性淋巴结SR(4.64±1.05)大于非转移性淋巴结(2.01±0.77),差异具有统计学意义(P<0.05);转移性淋巴结横断面前后径和横径比值(A/T)、矢状面前后径和上下径比值(A/L)及冠状面上下径和横径比值(L/T)均小于非转移性淋巴结,差异具有统计学意义(P<0.05)。结论 SR和CT径线比均对鉴别诊断转移性腋窝淋巴结有较高的价值。
Objective To study the value of ultrasound elastography (UE) strain rate ratio (SR) to CT radial line ratio in diagnosis of axillary lymph node metastasis of breast cancer. Methods A total of 118 patients with newly diagnosed breast cancer (including 153 axillary lymph nodes) were enrolled in this study. Preoperative detection of UE and CT was performed to observe the lymph node metastasis. The ratio of SR and CT was compared between metastatic lymph nodes and non-metastatic lymph nodes. Results All the subjects were successfully tested. The pathological diagnosis confirmed that there were 70 metastatic lymph nodes (45.75%, 70/153) and 83 (54.25%, 83/153) non-metastatic lymph nodes in this study. (4.64 ± 1.05) in metastatic lymph nodes was significantly higher than that in non-metastatic lymph nodes (2.01 ± 0.77), the difference was statistically significant (P <0.05); the anteroposterior diameter and transverse diameter of the metastatic lymph nodes (A / T) The ratio of anteroposterior diameter and anterior inferior diameter (A / L) and coronal diameter (L / T) were smaller than those of non - metastatic lymph nodes. The difference was statistically significant (P <0.05). Conclusion The ratio of SR to CT is of great value in differential diagnosis of metastatic axillary lymph nodes.