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Figure 2: Intraoperatively, real-time evaluation based on computed tomography-magnetic resonance imaging fusion, (a) Intraoperative real-time evaluation of the validity of needle pathway and the distribution of seeds. The preoptimization intraoperative plan showed the V100 did not cover the plan target volume, (b) The preoptimization dose-volume histogram showed D90 was 113.8 Gy and V100 was 82.6%, (c) After real-time optimization, the red cylinders on the needle pathway represented the subsequently inserted seed. The postoptimization intraoperative plan showed that the V100 coincided with the plan target volume, (d) The postoptimization dose-volume histogram showed that D90 was 149.2 Gy and V100 was 97.0%

Figure 2: Intraoperatively, real-time evaluation based on computed tomography-magnetic resonance imaging fusion, (a) Intraoperative real-time evaluation of the validity of needle pathway and the distribution of seeds. The preoptimization intraoperative plan showed the V100 did not cover the plan target volume, (b) The preoptimization dose-volume histogram showed D90 was 113.8 Gy and V100 was 82.6%, (c) After real-time optimization, the red cylinders on the needle pathway represented the subsequently inserted seed. The postoptimization intraoperative plan showed that the V100 coincided with the plan target volume, (d) The postoptimization dose-volume histogram showed that D90 was 149.2 Gy and V100 was 97.0%