Fig. 1From: Permanent iodine-125 brachytherapy for patients with progressive or recurrent high-grade gliomasTreatment planning and verification. (a) The planning target volume (PTV) is outlined with a red line, and the dose distribution is outlined with different colored lines. Additionally, a needle path was designed before the operation with the computerized treatment planning system. (b) Dose volume histogram (DVH) of PTV preoperation. (c) Verification of the dose distribution postsurgery. (d) DVH of PTV postoperationBack to article page