目的 探索实体肿瘤内部不同区域的间质液压（IFP）分布的异质性。方法 通过建立新西兰大白兔的皮下浅肌层VX2移植瘤模型,通过超声造影观察肿瘤的大小、形状、血流灌注等成瘤情况,并在超声引导下通过针芯法（WIN法）测量41只荷瘤兔VX2移植瘤内部不同区域的IFP。结果 41只荷瘤兔的VX2移植瘤的中央IFP为（23.79±8.07） mmHg、肿瘤外周1/2IFP为（15.58±5.22）mmHg、肿瘤外周1/4IFP为（8.29±5.47）mmHg,IFP从中央到外周逐步降低（F=70.85,P<0.001）。结论 VX2移植瘤内不同区域的IFP存在异质性,即从中央到外周IFP呈梯度显著降低。

Objective To explore the heterogeneity of interstitial fluid pressure（IFP）distribution in different regions of solid tumors．Methods The model of VX2 tumor was established in New Zealand white rabbits．The size,shape and blood perfusion of the tumor were observed by contrast-enhanced ultrasound,the IFP of VX2 tumor in 41 rabbits was measured by the wick-in-needle method（WIN method）under the guidance of ultrasound．Results The mean values of central IFP,peripheral 1/2 IFP and peripheral 1/4 IFP were（23.79±8.07） mmHg,（15.58±5.22 ）mmHg and （8.29±5.47） mmHg,respectively by statistical analysis,the IFP values changed significantly with different regions（F=70.85,P<0.001）．Conclusions There is heterogeneity of IFP in different regions of VX2 xenografts,that is,from the center to the periphery,the IFP decreased significantly．

实体肿瘤物理和化学微环境异常阻碍了肿瘤与外界进行物质交换,降低了药物渗入肿瘤组织,是肿瘤对放化疗抵抗的重要原因。目前,已有多种针对肿瘤微环境各个组分的治疗方法,如使血管正常化、降低肿瘤间质液压、降解细胞外基质等,以达到增强药物等的渗出,从而增强肿瘤治疗效果。声学调控是改变肿瘤理化微环境的一种有效方法,本文对声学调控其中几个主要的机制和研究进展进行综述,以期为临床肿瘤治疗提供新思路。