论文部分内容阅读
目的通过与PET成像比较,探讨MR全身弥散加权成像(WB-DWI)在肿瘤诊断中的应用价值。方法采用1.5TMR对22例临床高度怀疑为恶性肿瘤并已完成PET检查的患者行WB-DWI扫描,比较两种成像方法对病变显示的差异以及病变的ADC值与SUV值相关性。结果WB-DWI所见病灶数目多于PET检查,两种方法检出的肺、纵隔及腹部病灶数差异无统计学意义(P>0.05),WB-DWI检出骨的病灶数多于PET检查,差异有统计学意义(P<0.05)。两种方法检出病灶的部位大多数一致。病变的ADC值与SUV值无相关性。结论与PET成像相比较,WB-DWI显示的肿瘤病灶数量较多,对成人转移性骨肿瘤的显示敏感性高于PET,可作为肿瘤全身筛查的一种补充方法。
Objective To investigate the value of MR whole body diffusion-weighted imaging (WB-DWI) in the diagnosis of tumors by comparing with PET imaging. Methods WB-DWI was performed in 22 patients with highly suspected malignant tumors and PET examinations by 1.5TMR. The differences between the two imaging methods in pathological changes and the correlation between ADC values and SUV values were compared. Results The number of lesions seen by WB-DWI was higher than that by PET. There was no significant difference in the number of lesions of lung, mediastinum and abdomen detected by WB-DWI (P> 0.05) , The difference was statistically significant (P <0.05). Most of the lesions detected by the two methods were consistent. The ADC value of the lesion had no correlation with the SUV value. Conclusions Compared with PET imaging, WB-DWI shows a larger number of tumor lesions and is more sensitive to metastatic bone tumors in adults than PET, which can be used as a complement to the whole body tumor screening.