Fig. 1

The CT tomographic images of the preimplant and postimplant plan. (Squamous carcinoma of the esophagus yT2N1M1b. Stage IV. Right clavicular lymph node metastasis, EBRT:DT60Gy before). The first column lists all the CT tomographic images of the preimplant plan. The second column shows locations of needles before implantation the RIS. The third column lists the images of the postimplant plan in which includes seeds positions, dosimetric evaluations of GTV and adjacent OARs