The Evaluation Of The Efficacy Of MRI In The Treatment Of Primary Liver Cancer After TACE

Objective:To value the effect of primary liver carcinom after the operation by TACE using the 3.0T MRI. Methods:Analyze retrospectively 25 cases of primary hepatic carcinoma patients which of them must review regular MRI, DWI(b=800)scanning and MR dynamic increase 3 days before operation and 1 month after operation. Through and late follow-up, part of the DSA and CT enhanced scan findings were observed preoperative tumor area, lipiodol deposition area, tumor necrosis, areas of tumor recurrence in the DWI(b = 800) signal characteristics and ADC values, dynamic enhanced scanning time signal curve, MRI signal characteristics, so as to analyze the tumor necrosis and recurrence. Result:25 patients lesions statistical results are as follows: 25 lipiodol deposition area(3 cases of complete lipiodol embolization, no liquefaction necrosis relapse), 12 liquefaction necrosis, 19 suspected recurrence of residual area.(1) 25 lipiodol deposition area ADC value compared with preoperative tumor lesion area was significantly higher among DWI(b = 800) sequence of 16 lesions of low signal level six mixed-signal, high signal 2, 1 two other signals; dynamic contrast enhanced MRI showed no strengthening; T1 WI and T2 WI low signal-based, local mixed signals.(2) 12 liquefaction necrosis ADC value was significantly higher compared with that before the tumor lesion area in which DWI(b = 800) 10 low signal sequence, a signal, etc., a mixed signal; 11 dynamic contrast enhanced MRI a clear no enhancement, no enhancement of an artery, to strengthen the local delay; T1 WI low signal, T2 WI high signal.(3) 19 hypervascular areas, of which seven lesions compared with the preoperative range increases, T1 WI showed a slightly lower number, T2W1 slightly inhomogeneous signal, see the edge of DWI high signal nodules, arterial phase shows enhancement. 12 no significant change in lesion size, lesion internal roughly divided into lipiodol deposition area and not the deposition area, lipiodol deposition area covered signals are missing, mostly for cancer death, DWI mixed signal, low signal common, no enhancement; No lipiodol deposition at T1 WI showed mixed signals with low signal-based, T2 WI is high, and so on before the signal, the signal did not change significantly with the surgery, DWI is high, slightly higher signal, enhanced scan artery slight enhancement of delayed phase subsided main part of delayed enhancement.Conclusion:Dynamic MRI scan combined with DWI can accurately analyze the tumor necrosis after TACE lesion and recurrence characteristics of residues focal signal change, can be used to evaluate the effect of early TACE.