Radioactive therapeutic seeds include one or more carrier structures each carrying a radioactive isotope, a ceramic spacer or collar member, a metal ring about the ceramic member, and a capsule formed from two tubular parts, each part including a closed end, an open end, and an interior. At least one receiving hole disposes on an insulating body. The digital image enhancer also includes a video output processor receptive to the output of the deinterlaced video stream to provide a scaled, deinterlaced video stream. , signal interference cancellation, etc. Transmission of the video data stream to the video decoder buffer is halted when the video decoder buffer fills up. Such designing of the hybrid drill bit may be performed until one or more bit design parameters are accepted as being optimized.