摘要
目的探讨鼻咽癌MRI动态增强及灌注成像及其与T分期的关系。方法收集深圳市人民医院放射科2006年2月至2012年3月治疗前鼻咽癌患者46例,采用FLASH序列进行动态增强及灌注成像扫描,分析并计算灌注及动态增强参数:达峰时间(1TrP)、最大斜率(Slopemax)、曲线下面积(AUC),并与患者肿瘤T分期进行统计学Spearman等级相关分析。结果(1)所有病例动态增强曲线均有一个快速上升期,灌注成像参数AUC可以清晰反映瘤体内部血流灌注情况及解剖结构分辨率较好;(2)不同T期患者动态增强及灌注参数rITrP、Slopemax、AUC值分别为:T1期(60.45、10.59、20619.56),他期(58.12、12.47、23037.23),T3期(70.61、15.06、26507.23).r4期(41.72、19.87、30092.27),经SPSS16.0统计软件Spearman等级相关分析,r值分别为-0.247、0.859、0.963,P分别〉0.05、〈0.05、〈0.05,表明不同T分期灌注及动态增强参数Slopemax、AUC值有随着T分期增加而增大的趋势。结论鼻咽癌动态增强及灌注成像可以反映瘤体内微观血流灌注情况,其中灌注成像参数Slopemax(最大斜率)、AUC(曲线下面积)和T分期呈正相关。
Objective To perform the dynamic contrast-enhanced and perfusion magnetic resonance imaging (MRI) of nasopharyngeal carcinoma (NPC) and analyze the correlation with T-staging. Methods A total of 46 naive NPC patients underwent MRI. The parameters of dynamic contrast-enhanced and perfusion MRI included time to peak (TTP), Slope and area under the curve (AUC). Results The increasing period of signal intensity-time curve of all cases was steep. And the perfusion image of AUC could reflect the blood perfusion of tumor tissue. Parameters ( TFP/Slopemax/AUC ) in different T-staging were T1 -staging (60.45/10. 59/20 619. 56 ), T2-staging ( 58.12/12. 47/23 037.23 ), T3-staging ( 70. 61/15.06/ 26 507. 23) and T4-staging (41.72/19.87/30 092. 27 ). Their statistical results were r = - 0. 247, P 〉 0. 05 and r = 0. 859, P 〈 0. 050 and r = 0. 963, P 〈 0. 05 respectively. And statistical significance existed in Slope AUC with T-staging. Conclusion Dynamic contrast-enhanced and perfusion MRI can reflect angiogenesis of NPC. And there is a positive correlation between the parameters of dynamic contrast-enhanced and perfusion MRI (Slopemax, AUC) and T-staging.
出处
《中华医学杂志》
CAS
CSCD
北大核心
2013年第15期1153-1155,共3页
National Medical Journal of China
基金
基金项目:2010年深圳市科技计划(201002008)
关键词
鼻咽肿瘤
磁共振成像
灌注成像
Nasopharyngeal neoplasms
Magnetic resonance imaging
Perfusion imaging