device by controlling of the x ray direction along with the window control directing the x rays outside the device allows for precise delivery of x rays to target tissue as shown in fig4 multiple windows 4 a 4 b in the shield to allow exposure in multiple u201c directed u201d regions simultaneously as shown in fig5 c drug delivery system 10 may be also provided the drug delivery device includes needles 11 12 which in this case are hollow with an opening at a distal end to allow for release of diagnostic and therapeutic agents are retractably connected to x ray head 3 needles 11 12 communicate with a reservoir that contains therapeutic or diagnostic agents so that these may be injected into the site any number of needles may be provided outer wall 30 is provided and form a lumen 21 through which a retraction wire 32 or hollow drug delivery tube reside this drug delivery system is used to inject drugs that may help heal the puncture wounds caused by the device or the drug delivery system is used to help the tumorous tissue absorb the x rays also this drug delivery system is used to highlight the region aperture window as shown in fig6 has an overlapped shield window is used to control the final position of the x rays shield 20 is rotatable or slidable and is used to control the final window size by sliding shield 20 over a window the overall window size is reduced thus controlling the final window size and hence the dosage and direction of exposure these shields can be configured for specific types of procedures the shields are easily removable to allow customization of the device prior to treatment fig7.