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目的 :探讨应用超声对浅表淋巴结的良恶性进行鉴别诊断时,探头施加压力的大小对超声常用检测指标结果的影响。方法:对以浅表淋巴结肿大就诊或明确淋巴结转移住院医治的34例患者67枚淋巴结进行超声检查,分别在探头外加压力为0、3 N时对浅表淋巴结超声常用指标进行测量,结果与病理检查对照。结果:淋巴结的L/S比值以2为分界线进行计数比较,加压前后良性和恶性淋巴结计数、皮髓质厚度比例计数无差异;彩色多普勒检测淋巴结内动脉收缩期流速(PSV)、舒张期流速(EDV)差别统计学有意义;血流阻力指数RI以0.7为分界线计数,良性淋巴结计数差别有统计学意义,恶性淋巴结计数差别无统计学意义;良性淋巴结血供类型加压前后无显著差异,恶性淋巴结血供类型加压前后差异显著。结论:探头外加压力对临床浅表淋巴结超声常用指标的测量可产生重要影响,其中淋巴结内血流速度、血流阻力指数、淋巴结内血流分布规律受影响最大,因此在临床检诊中要注意探头外加压力的控制。
Objective: To explore the application of ultrasound on the differential diagnosis of superficial lymph nodes of benign and malignant, the probe applied pressure on the ultrasound commonly used indicators of the test results. Methods: Thirty-seven lymph nodes of 34 patients with superficial lymph node enlargement or hospitalized with definite lymph node metastasis were examined by sonography. The common indexes of superficial lymph node ultrasonography were measured respectively when the probe pressure was 0,3 N, and the results were compared with the pathological Check the control. Results: The L / S ratio of lymph nodes was counted by dividing line with 2, there was no difference in benign and malignant lymph nodes count and cortical thickness ratio before and after compression. The color Doppler flow velocity (PSV) The diastolic flow velocity (EDV) difference was statistically significant; RI was 0.7 as the dividing line, benign lymph node count difference was statistically significant, no significant difference in malignant lymph node count; benign lymph node blood supply before and after pressurization No significant difference, the type of blood supply of malignant lymph nodes before and after the significant difference. Conclusion: The applied pressure of the probe can have a significant impact on the measurement of commonly used indicators of clinical superficial lymph node ultrasonography. Among them, the velocity of blood flow, the index of blood flow resistance and the distribution of blood flow in the lymph node are the most affected, so attention should be paid in clinical examination Probe plus pressure control.