磁共振全身弥散技术(WB-DWI)在PHC分期中的作用

The Function of WB-DWI in Staging ofPHC

目的探讨磁共振全身弥散技术(WB-DWI)在PHC分期中的临床应用价值。方法对28例PHC患者进行常规CT/MR检查和WB-DWI检查,对常规CT/MR图像、WB-DWI图像显示的原发灶、其他部位的转移灶进行分析。结果 WB-DWI检出肝脏病灶55例(96.5%55/57),局部及远处淋巴结转移灶9例(100%9/9)骨骼转移6例(100%6/6),其他部位转移2例(100%2/2)。4例常规CT/MR检查分期Ⅱ或Ⅲ期的PHC患者经WB-DWI分期后为Ⅳ期。结论 WB-DWI能够评估肝脏原发病灶的大小、数目,对淋巴结的转移、骨骼的转移显示较好,但对评估血管的侵犯和肺转移情况有限度。STIR-DWI优化组合技术,能明显提高大范围扫描图像的信噪比,提高全身各部位病变的显示能力,增加PHC患者分期的准确性。WB-DWI检查方法快捷方便无辐射,在PHC患者的TNM分期中有重要价值。

Objective To explore the clinical applcation of WB-DWIin staging of PHC.Methods CT/MR and WB-DWI were employed to inspect all 28 patients with PHC respectively,analyse the image of both CT/MR and WB-DWI on primary lesion and metastatic lesion.Results 55liver lesion（96.5%,55 /57）,9 local and distant lymph glandmetastatic lesion（100%,9 /9）,6 metastatic lesion in bone（100%,6 /6） and 2 other metastatic lesion（100%,2 /2） were discovered by using WB-DWI method.And 4 patientswith PHCweredifferentiate into stage IV byWB-DWI while thery were differentiate into stage II or III by CT/MR.Conclusions WB-DWIcan be used to assess the size and number of liver primary lesions,lymph note and bone metastatic lesion can be well present by using WB-DWI method but not the present of vascellum and lung metastatic lesion.Optimizationcombination of STIR-DWI skillscan extensively improve SNR（signal-to-noise） of amage and more lesions of more position can be present,what＇s more the accuracy of PHC will be improved too.The method of WB-DWI was radio-less and more quickly,and worth application in PHC staging.