Phase II/III of Randomized Controlled Clinical Research on IRE Synchronous Chemotherapy for LAPC

During the IRE process, we employed a CT scanner and an ultrasound system to guide percutaneous insertion of the electrode probes (one main electrode and one to three standard electrodes were used per treatment). The electrode number, electrode-insertion mode and intraoperative parameters were decided upon during pretreatment planning. The IRE parameters were visually simulated in the pulse generator and set up as follows: energy was applied at 1500 V/cm for 90 ms/pulse for a total of 7-9 pulses. After an initial testing pulse train was discharged to establish the best voltage value, the remaining 80 pulses were completed in 1-2 minutes. After ablation, we confirmed completion of IRE by measuring real-time resistance or current changes, in addition to intraoperative ultrasound and CT.

Gemcitabine hydrochloride (Qilu pharmaceutical \[Hainan\] Co., Ltd. Haikou, China\] was administered by intravenous infusion at a dose of 1000 mg/m2.