CT Perfusion Imaging in Differential Diagnosis of Malignant Lymph Nodes in Head and Neck

Objective To evaluate the value of dynamic CT perfusion in diagnosis various cervical lymph nodes in head and neck.Methods The dynamic perfusion series were performed for in 37 patients with cervical lymph node leisions,.The time-density curve(TDC) and the date of their perfusion parameters were recorded and analyzed statistically.Results The BF,BV,P of primary and metastatic lymph nodes were higher than their of normal lymph nodes(P0.05).The BF,BV of metastatic lymph nodes higher than their of primary lymph nodes(P0.05).The TDC of primary lymph nodes show low level curve.The TDC of metastatic lymph nodes presented rapid ascending and rapid descending.Conclusion The parameters and the TDC of CT perfusion among the lymph nodes have some characteristic,it is useful to diagnose the lymph nodal diseases.