Preliminary comparison of whole-body diffusion-weighted MRI and PET on tumor imaging / 中国医学影像技术

ABSTRACT

Objective To assess the value of clinical applications of whole-body diffusion-weighted imaging (WB-DWI) in diagnosing patients with malignant tumors compared with positron emission tomography (PET). Methods A total of 22 patients with highly suspected malignant tumors underwent WB-DWI after PET. The differences between the two imaging methods were compared in displaying lesions, and the correlation between ADC and SUV value was analyzed. Results More lesions were showed with WB-DWI than PET. There was no significant difference between the two methods in detecting the lesions of lung, mediastinal septum or abdomen (P>0.05), but more lesions in skeleton were showed with WB-DWI (P<0.05). No significant correlation between ADC and SUV value was found. Conclusion Compared with PET, WB-DWI can detect more tumor lesions. The sensitivity of WB-DWI in detecting metastatic tumors of bone is higher than that of PET.