目的：探讨耦合剂充盈法腔内超声联合弹性成像技术对直肠癌术前分期诊断的可行性、准确性以及应用价值。方法：以2014年10月—2016年2月经直肠镜检病理证实的拟行手术治疗的36例直肠癌患者为研究对象，对患者行耦合剂充盈法腔内超声检查，进行T分期（以UT表示），再对肿物进行实时超声弹性成像进行评价，通过回顾性分析进行超声T分期（以EUT表示），以术后病理分期为金标准，分析两种方法对直肠癌分期的准确度、灵敏度、特异度是否具有统计学意义。分析弹性成像与直肠癌分期的相关性、灵敏度。结果：本组病例手术病理结果均证实为直肠癌，对术前UT及EUT分期分别与术后病理T分期行一致性检验，显示均具有较好的一致性（P＜0.05）。EUT对直肠癌分期的总体准确度、灵敏度、特异度较UT高，EUT较UT能明显降低过低分期的误差，二者差异具有统计学意义（P<0.05），EUT对进展期的诊断符合率较UT明显提高，差异具有统计学意义（P<0.05）。结论：耦合剂充盈法腔内超声联合弹性成像技术是评价直肠癌术前分期的新方法，优于常规腔内超声对直肠癌的术前分期，是术前评估直肠癌分期的有效补充手段。

Objective: Probe into the new technology of coupling gel filling and ultrasonic elastography in colorectal cancer staging’s feasibility, veracity and application value. Methods: From October 2013 to October 2014, the object of 36 patients who was colorectal cancer proctoscopy pathology confirmed intend to operative treatment is the main study, for sonography coupling gel filling ultrasonic testing, for T staging(with UT), and for making an evaluation of goiter real-time ultrasound elastography, through the retrospective analysis of ultrasonic T stage(with EUT), the postoperative pathological staging as the gold standard, analysis of two methods to colorectal cancer staging of accuracy, sensitivity and specificity is statistically significant or not. Analyze elasticity imaging and colorectal cancer staging of pertinence and sensitivity. Result: This group of cases operation pathology confirm that is colorectal cancer, on preoperative UT and EUT respectively with postoperative pathologic stage T staging consistency check, show all have good consistency(P＜0.05). The overall accuracy of the EUT to colorectal cancer staging, high sensitivity, specific degrees from UT, EUT compare UT can obviously reduce the error of low time, the difference is statistically significant(P<0.05), EUT on the diagnostic coincidence rate of progress is UT has improved significantly,  the difference is statistically significant(P<0.05). Conclusion: Sonography coupling gel filling and ultrasonic elastography is a new method for evaluation of preoperative staging of colorectal cancer, is superior to the conventional intracavitary ultrasonic preoperative staging of colorectal cancer, is an effective supplementary means for preoperative evaluation of colorectal cancer staging.